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SIPPs vs ISAs: which is the best tax shelter for your investments?

SIPPs vs ISAs represented by picture of two piggy banks going head-to-head.

Should you invest in a pension or an ISA? Is there a decisive answer to the eternal SIPPs vs ISAs question?

Well… almost. We can make a few immediate statements that provide clear direction – although the decision tree gets pretty thorny after that:

  • If you hope to live off your investments before your minimum pension age1 then a stocks and shares ISA is the clear winner. 
  • Employer pension contributions are an unbeatable leg up. Take them, take them, take them. It’s free money, unless you plan on dying a rock ‘n’ roll death. (Pro tip: almost nobody does.)

Otherwise, much depends upon if you’re contributing to your SIPP (or other pension type) at the higher-rate of income tax or at the basic rate:

  • Paying basic-rate tax? Then the choice between a SIPP and a Lifetime ISA (LISA) is finely poised. We delve deeper into this below.  
  • If you’re a young basic-rate taxpayer who won’t retire until State Pension age, an ISA may beat a SIPP in certain scenarios. Again, we’ll explain more below. 

The Kong-sized caveat to all this is that future changes to the tax system may move the SIPP vs ISA goalposts.

Goalposts on wheels

Tax-strategy diversification can help you address the uncertainty. It involves you employing several different tax shelters, irrespective of their current pecking order.

Spreading your savings across various tax shelters is particularly sensible for young people for whom retirement is decades away. But the technique is worth everyone else considering too, because SIPPs and ISAs hedge against different tax risks. We’ll talk about that in a sec.

To set the scene, let’s first recap what ISAs and SIPPs have in common – and what sets them apart. 

Terminology intermission: I mostly talk about SIPPs in this article but the conclusions apply equally well to other defined contribution (DC) pensions, such as Nest-style auto-enrolment Master Trust Pensions. I’ll use the term ISAs to refer to all ISA types, except for the LISA. I’ll mention the LISA when its special features alter the SIPP vs ISA comparison.

SIPPs vs ISAs: these things are the same

SIPP or ISA? There’s nothing between them on the following counts:

Tax shelter / feature SIPP Stocks and shares ISA
No tax on dividends Yes Yes
No tax on interest Yes Yes
No tax on capital gains Yes Yes
Invest in funds, ETFs, bonds, shares Yes Yes
Ceiling on lifetime tax-free income No No
Versions for children Yes Yes

SIPPs vs ISAs: these things are different

ISA or SIPP? Well, on the other hand…

Tax shelter / feature SIPP Stocks and shares ISA
Free of income tax on withdrawals No Yes
Income tax relief on contributions Yes No
Tax relief on National Insurance Yes, with salary sacrifice No
25% tax-free cash on withdrawal Yes, up to £268,275 N/A
Access anytime No Yes
Annual limit on contributions £60,000 £20,000
Employer contributions Yes No
Inheritance tax exempt Only until April 2027. Fine if passed to spouse If passed to spouse,
otherwise no

As you can see, a SIPP gathers more ‘Yes’ votes than an ISA.

Those advantages stack up.

ISAs are superior to SIPPs when access to your money before the normal minimum pension age is your top priority. 

However, the various pension tax breaks on offer combine to make SIPPs the best option for the bulk of most people’s retirement savings. 

LISAs are a different kettle of tax wrapper. Their dream combination of tax relief and tax-free withdrawals make LISAs an attractive option for basic-rate taxpayers vs pensions – under some circumstances

The devil is in the detail and we’ll dance with him shortly. Before that, let’s talk tax-strategy diversification.

Tax-strategy diversification in retirement planning

Tax-strategy diversification for UK investors means spreading your retirement savings between your LISA, ISA, and SIPP accounts. It’s a defence against adverse changes to the tax system in the future. 

The concept is analysed in a US research paper called Tax Uncertainty and Retirement Savings Diversification by Brown et al.

The paper examines the impact of tax code changes upon the traditional IRA and the Roth IRA. These two American tax shelters are analogues of our SIPP and ISA, respectively. 

The authors make several key observations. I’ve translated their US tax-shelter language directly into their UK equivalents, as follows…

SIPPs are negatively affected by income tax hikes in the future. They are positively affected by income tax falls. 

For example, if you get tax relief at 20% now but are later taxed on retirement withdrawals at 22% then that’s a blow against pensions. 

The reverse is true for ISAs. They’re taxed upfront and so enable you to lock in your income tax rate now. This is an advantage for ISAs vs SIPPs if tax rates rise in your retirement. 

For example, you win if you took a 20% tax hit on the salary that funds your ISA contributions today but then the basic rate of tax rises above 20% by the time you come to withdraw tax-free in the future.  

Meanwhile SIPPs offer a hedge against poor pension performance. If your investments are hit by a terrible sequence of returns then more of your withdrawals will probably be taxed at a lower tax bracket. This offsets some of the damage wreaked by bad luck, especially if you banked higher-rate tax reliefs when you were working. 

The long game

The whole research paper is worth a read. But the following quotes provide particular insight on how future tax changes could boost or hobble SIPPs and ISAs for different demographics.

Future tax rates are more uncertain over longer retirement horizons. Our analysis of historical tax changes also suggests that the rates associated with higher incomes are more variable.

The paper’s authors found that income tax rates were much more volatile for high earners going back to 1913…

…as a result, the highest tax-risk exposures will occur among younger investors with sufficient traditional account [such as SIPP] savings to produce taxable income in retirement that exhausts the lower-income brackets. Young, high-income investors who are likely to meet these criteria can manage their exposure to tax-schedule uncertainty by investing a portion of their wealth in Roth [for us, ISA] accounts.

High-income investors increase their allocations to Roth [ISA] accounts when faced with uncertainty about future tax rates. At these income levels, reducing consumption risk in retirement by locking in tax rates today is more valuable than realizing a potentially lower tax bracket in the future.

(Our pointers are in italics).

Young, higher-earners are the most susceptible to steep future tax rises, according to this analysis. Tax-strategy diversification implies that they should hedge against that possible fate by ploughing a significant portion of today’s income into ISAs. The danger with SIPPs is that future withdrawals may be made at tax rates that are higher than the reliefs on offer today. 

I’d caution, though, that the biggest SIPP vs ISA gains come from taking higher rates of tax relief on pensions that are subsequently taxed at a retiree’s much lower income tax rate. UK income taxes would have to rocket in the future to negate this advantage. 

On the other hand, here’s a reason to invest in pensions that most of us would rather not think about: 

Investors with sufficiently high current income must pay the top tax rate in the current period, however, such that the traditional [SIPP] account is preferable for higher-income investors who may end up in a lower tax bracket if the stock market performs poorly.

Eek. Well, bad things can happen.

The case for a bit of both

Ultimately the paper comes to a conclusion that I suspect many investors reach using their gut:

The optimal asset location policy for most households involves diversifying between traditional [SIPP] and Roth [ISA] vehicles.

Spreading your bets makes sense (as ever), especially when retirement is a dim and distant prospect. 

But that said, do bear in mind this is a US-focused study. Their income tax bands are more incremental than ours.

In contrast, our SIPPs benefit from a massive cliff-edge if you enjoy higher-rate tax relief when you pay in but your retirement income falls mostly in the 0-20% band. 

This feature of the UK tax system tilts the playing field heavily in favour of pensions vs ISAs, as we’ll see.  

(Note: I’ve used UK income tax rates throughout the article. The maths does change a little for Scottish taxpayers. While the broad conclusions are the same, the pecking order may change at the margins.)

ISA vs SIPP: when it doesn’t matter

You’re taxed upfront on money that goes into your ISA, but your withdrawals are tax-free. 

SIPPs work the other way around. You pay less tax on contributions, but are subject to tax on money taken out. Thus UK pension vehicles can be thought of as tax-deferred accounts. 

ISAs vs SIPPs is a dead heat when the tax deducted from your ISA contributions matches the tax you pay on pension withdrawals. 

The amount of cash you can take out of each account is exactly the same in this situation, as shown in the following example:

Account Gross income Net after tax After tax relief Withdrawal
ISA £100 £80 £80 £80
SIPP £100 £80 £100 £80

The example tracks the value of £100 through the tax shelter journey, from contribution to withdrawal.

Think of it as comparing each £100 that you could choose to put in either your ISA or SIPP. 

  • Gross income is earned before tax. 
  • Net after tax is the amount left in your account after HMRC takes its bite. 
  • After tax relief is the value of your savings after any rebates. 
  • Withdrawal is what’s left of your original £100 once taken in retirement (based on current tax rates and ignoring investment returns because they’re ISA vs SIPP neutral).  

A previous post of ours walks you through the underlying SIPP vs ISA maths

But just to be clear, pensions always win when an employer contribution match is on the table.

Pound-for-pound an employer match doubles your money. Not taking the match is like volunteering for a pay cut. 

Same difference

Employer contributions notwithstanding, the example above shows that the tax-saving powers of an ISA or a SIPP are evenly matched when:

  • You’re taxed at 20% on the ISA cash you put in, and
  • You’re taxed at 20% on the SIPP cash you withdraw

The amount of income you can take from each vehicle is the same, if the tax rates are equal. The order of tax and tax relief makes no difference to your investment returns, as The Investor has previously shown

If both accounts gain, for example, 5% a year, then your SIPP’s balance will be larger than your ISA’s because there’s a bigger sum of money to grow after tax relief. 

But the SIPP’s advantage is cancelled out by tax on withdrawal. Hence the Withdrawal value is identical for both accounts in this scenario. 

If that’s the case for you then we need to head into an ISAs vs SIPPs tie-breaker situation.

ISAs vs SIPPs: tie-breaker situation

Priority ISA SIPP
Access before pension age Yes No
Inheritance tax benefit Spouse Spouse2
Means-testing / bankruptcy advantage No Yes
Tax-strategy diversification  Use both

Personally, if I was many years from retirement I’d favour the accessibility of ISAs as a handy backstop. Just in case life took an unpleasant turn. 

However the wisdom of tax-strategy diversification still suggests splitting your savings between both vehicles. 

SIPPs vs ISAs: back in the real world

Because most people will be taxed at a lower rate of tax as retirees than they are as worker bees3, in practice pensions usually beat ISAs for retirement purposes.

Albeit LISAs are the wild card that can disrupt the SIPP vs ISA hierarchy. 

Much depends on:

  • How much 0% taxed cash4 your SIPP ultimately provides as a percentage of your retirement income.  
  • Whether your SIPP income is taxed at a lower bracket in retirement relative to the tax relief you snaffled while working. 

To unpick the complexity, I’ll try to find the best-fit tax shelters for most people by running through some common retirement income scenarios.

I’ll account for variations in individual circumstances by looking at key breakpoints that alter the ISA vs SIPP rankings. 

Breakpoint 1: the tax shelter types available

I tested the tax efficiency of four kinds of accounts that are useful for retirement savings:

Salary-sacrifice SIPP – this wrapper enables basic-rate employees to legitimately avoid 28% tax (20% + 8% NICs) while higher-rate employees avoid 42% tax (40% + 2% NICs)

SIPP – a standard pension account provides tax relief at the 20%, 40%, and 45% rates but you still pay national insurance contributions (NICs)

Stocks and shares ISAs – can deliver the investment growth needed for retirement. 

As can LISAs – they also accept investments. 

Breakpoint 2: retirement income levels and stealth taxes

I’ve examined three retirement income levels that align with the research published in the Retirement Living Standards report. 

These three tiers equate to a Minimum, Moderate, and Comfortable living standard in retirement. 

However, I’ve adjusted the incomes to account for our current era of stealth taxes

The UK’s tax thresholds are frozen until April 2028. That is a tax hike by any other name. 

The Office for Budget Responsibility estimates this manoeuvre amounts to increasing the basic rate of income tax from 20% to 24%. 

Rising tax rates disadvantage pensions vs ISAs as noted earlier. So I’ve inflated the three retirement income levels by 2024-25 annual CPIH plus 3% assumed inflation for every year until 2028. This increased income requirement models SIPP withdrawals losing more to tax, as inflation erodes the lower brackets. 

I assume that the tax thresholds rise with inflation after April 2028, as they should. 

Breakpoint 3: how you use your personal allowance

The less your SIPP income is taxed in retirement, the better SIPPs do versus ISAs.   

If you retire at age 55 and don’t receive a State Pension until age 67 then your SIPP’s tax performance improves – especially at lower retirement incomes – because a significant chunk falls into your personal allowance. 

But the SIPP advantage contracts if your personal allowance is mopped up by the State Pension, defined benefit pensions, or by any other income. 

Indeed, with the personal allowance frozen and the Triple Lock intact, the full State Pension could grow large enough to entirely fill the 0% income tax band by April 2028, or soon thereafter. 

I’ve used that assumption in the examples below to guide anyone who thinks they’ll retire at State Pension age, or with a substantial source of alternative income. 

Even if you retire early, the State Pension will arrive around ten years after your normal minimum pension age, from April 2028.

I account for this by modelling a 40-year retirement journey. This sees SIPP income cease to benefit from the personal allowance after the first decade. 

Breakpoint 4: the fate of 25% tax-free cash

UK pensions are boosted by another blessed benefit. That’s the 25% tax-free cash that can be taken as a lump sum (known as the PCLS) or in ongoing slices as part of phased drawdown

Before the Lifetime Allowance was abolished, the tax-free sum used to automatically reduce a basic-rate payers overall income tax burden from 20% to 15%. 

But that can no longer be taken for granted – because the 25% tax-free cash allowance is now capped at £268,275. 

It sounds a lot as of today, but the Chancellor has said the limit is frozen. 

  • Frozen until April 2028 – after which it rises with inflation?
  • Frozen forever? In which case inflation will eventually swallow it like light quaffed by a black hole. 

It’s not clear, so I’ve tested both scenarios. 

The first scenario is relevant to near-term retirees who can assume their tax-free cash allowance will retain most of its current value when they retire. Especially if they’re at the Minimal to Moderate income levels and inflation is tamed again (which helps if the cap doesn’t rise in future years). 

The second scenario may make sense if you’re three or four decades from retirement, and the cap remains frozen in time while inflation crushes it. 

Right, let’s get on with our key ISA vs SIPP case studies!

SIPPs vs ISAs: £15,842 Minimum annual retirement income

In this example, SIPP contributions are made at the basic income tax rate and the 25% tax-free cash cap is not reached during a 40-year retirement.

Ranking PA5 intact Retire on State Pension 40-yr retirement
1. Salary sacrifice LISA  LISA
2. LISA / SIPP Salary sacrifice Salary sacrifice
3. SIPP SIPP
4. ISA ISA ISA
  • PA intact = SIPP income benefits from the 0% personal allowance (PA)
  • Retire on State Pension = SIPP income does not benefit from the personal allowance
  • 40-yr retirement = The ranking for a 40-year retirement journey where the personal allowance is available to your SIPP for the first decade, while the State Pension absorbs the PA thereafter. 25% tax-free cash may run out at some stage. (Though not at the Minimum income level) 

The headline is that a LISA wins across a 40-year retirement journey. The salary sacrifice pension used to win this category when we’ve previously run the numbers. But the reduction in National Insurance Contributions means that the LISA edges the contest now.

You can’t access a LISA until age 60 though, whereas it’s age 57 for most SIPP-owners from April 2028.

The LISA also now beats a salary sacrifice SIPP if you retire later with a full State Pension at age 67 (and/or a decent defined benefit pension et cetera). 

A normal SIPP (‘relief at source’ or ‘net pay’, no salary sacrifice option) lags behind a LISA overall. Standard ISAs come last. 

Despite this outcome, remember any pension is immediately catapulted above a LISA when your employer matches your contributions. 

After you’ve trousered your employer’s contributions, you’re best off stuffing your LISA up to its £4,000 annual hilt on tax-strategy diversification grounds

LISA contributions locked in at today’s tax rates will benefit versus pensions if taxes go up in the future (which they are doing until April 2028 at least, due to that infernal fiscal drag).

Basic-ally no difference

Intriguingly, a normal SIPP isn’t that far ahead of an ISA if you retire at State Pension age in this basic-rate taxpayer scenario. 

You pocket £77 from a SIPP, and £72 from an ISA, for every £100 you originally contributed to each account. That’s a 7% difference.

Such a slim margin suggests that diversifying between the two accounts is a sound idea. Albeit I’d still heavily favour my SIPP, given that small gains make all the difference at lower incomes. 

If the 25% tax-free cash is eliminated

Ranking PA intact Retire on State Pension 40-yr retirement
1. Salary sacrifice LISA  LISA
2. LISA  Salary sacrifice Salary sacrifice
3. SIPP ISA / SIPP SIPP
4. ISA ISA

This scenario downgrades pensions, which means a LISA should take priority before you load up your pension. 

For those retiring at the State Pension age, an ISA strategy even draws level with a non-salary sacrifice SIPP in terms of withdrawal value: £72 a piece for every £100 contributed. 

If I really believed that the 25% tax-free cash benefit was set to whither to nothing then I’d overwhelmingly favour my ISAs vs SIPPs in this scenario. 

However I think it’s more realistic to assume that the 25% tax break will retain some residual value, even if you’re 30-40 years away from retiring.

SIPP contributions made at higher-rate taxpayer level

Ranking PA intact Retire on State Pension 40-yr retirement
1. Salary sacrifice Salary sacrifice Salary sacrifice
2. SIPP SIPP SIPP
3. LISA LISA LISA
4. ISA ISA ISA

Higher-rate taxpayer contributions lead to a decisive win for pensions in the SIPPs vs ISAs match-up. 

LISAs and ISAs form the bottom half of the table in this scenario and stay there. 

Salary sacrifice and normal SIPPs continue to beat the L/ISA gang whether you retire at the Minimum, Moderate, or Comfortable income level. 

However, if you expect tax-free cash to be disappeared by government chicanery then the LISA draws level with the SIPP at the £47,000 retirement income mark. 

At £56,000 LISAs draw level with the salary sacrifice pension and are the best choice for investors who expect to rock a £61,000 retirement income.

Essentially, exposure to greater levels of higher-rate tax, and the loss of tax-free cash, knock the gloss of the SIPP relative to the LISA’s tax-free withdrawals. 

LISAs also tie with salary sacrifice SIPPs at the £86,000 retirement income level even when you do have tax-free cash. That’s because you hit the lifetime tax-free cash cap so quickly. 

But again, none of this undoes the primacy of pensions pumped up by employer contributions. 

For those of us operating below such Olympian heights, the higher-rate tax reliefs are the sweet spot for pension contributions – because 40%-tax workers are likely to become 20%-tax retirees.

SIPPs vs ISAs: £34,435 Moderate annual retirement income

LISA is the way to go again if you’re making contributions at the basic income tax rate:

Ranking PA intact Retire on State Pension 40-yr retirement
1. Salary sacrifice LISA  LISA
2. LISA Salary sacrifice Salary sacrifice
3. SIPP SIPP SIPP
4. ISA ISA ISA

Salary sacrifice’s lead over a LISA (in the left-hand column) is slight, even when you’re able to protect some withdrawals via your 0% tax personal allowance. 

The principle of tax-strategy diversification suggests you’d do well to fill the LISA first. 

Salary sacrifice outcomes continue to dominate normal SIPPs. That’s because they effectively gain relief on 32% tax, instead of 20%. 

Meanwhile normal SIPPs enable you to withdraw 7% more than ISAs across a 40-year retirement, or if you retire at State Pension age.

If the 25% tax-free cash is eliminated

Ranking PA intact Retire on State Pension 40-yr retirement
1. LISA LISA  LISA
2. Salary sacrifice Salary sacrifice Salary sacrifice
3. SIPP ISA / SIPP SIPP
4. ISA ISA

The ISA / SIPP draw occurs because the SIPP’s 20% tax relief on contributions is the same as the ISA’s 20% tax exemption on withdrawals.

The SIPP vs ISA rankings for higher-rate taxpayer contributions are the same as the Minimum income level, regardless of what happens to the 25% tax-free cash. Prioritise pensions first, then LISAs, and ISAs come last. 

SIPPs vs ISAs: £47,417 Comfortable annual retirement income

SIPP contributions are made at the basic income tax rate in this scenario. The 25% tax-free cash cap is reached after 23 years of retirement.

Ranking PA intact Retire on State Pension 40-yr retirement
1. LISA / Salary sacrifice LISA  LISA
2. Salary sacrifice Salary sacrifice
3. SIPP SIPP SIPP
4. ISA ISA ISA

LISAs have reeled in salary sacrifice SIPPs across the board at the Comfortable income level. 

Meanwhile, SIPPs only just beat ISAs across a 40-year retirement because the tax-free cash spigot splutters dry after 24 years. 

However, it’s possible to avoid this fate by pulling out your 25% tax-free cash as a lump sum (PCLS) before the ceiling is reached.

Ideally, you’d get it all under ISA cover as quickly as possible. Once in an ISA your money can continue to grow tax-free without limit. (That is, as if the tax-free cash cap had not been introduced.)

How doable is that? 

Sheltering your tax-free lump sum

Let’s say you retire in late March and deliberately leave that year’s ISA allowance free until then. That’s £20,000 under your tax shield straightaway. 

The tax year clock ticks on to April 6. Now you’ve got another £20,000 worth of ISA to fill with newly-minted 25% tax-free cash.  

Perhaps you also have some emergency cash standing by, an offset mortgage facility, or other cash savings?

With a bit of planning, you can use these resources to expand your flexible ISA’s elastic band in the years before your retirement date. 

Check out the ‘Flexible ISA hack to build your tax-free ISA allowance’ section in our ISA allowance post. (Hat tip to Finumus who came up with the idea.)

Double your ISA allowance numbers if you have a trustworthy significant other. 

You’ll be able to stash a bit more tax-free in General Investment Accounts, too. However, the much-shrunk dividend tax and Capital Gains Tax allowances mean that only a smidge of your subsequent returns will escape HMRC’s tractor beam. 

All the same, you’re better off being taxed at dividend and capital gains rates than income tax rates. Hence you should withdraw any 25% tax-free cash as soon you can, once you look like you’ll hit the cap. It’s better out than in. 

If the 25% tax-free cash is eliminated

Ranking PA intact Retire on State Pension 40-yr retirement
1. LISA LISA  LISA
2. Salary sacrifice Salary sacrifice Salary sacrifice
3. SIPP ISA  ISA
4. ISA SIPP SIPP

Notice that a SIPP actually performs worse than an ISA in the main two scenarios. That’s because a ‘Comfortable’ income earner ends up being partially taxed at the higher-rate, once you add on their State Pension.

This scenario could unfold for a basic-rate worker who saved into their SIPP from a young age, experienced outstanding investment performance, or suffered elevated tax rates in retirement. 

Aside from that, frozen tax thresholds and the pernicious effects of fiscal drag make it increasingly likely that retirees will be dragged into the 40% band. 

The SIPP vs ISA rankings for higher-rate taxpayer contributions differ slightly from the Minimum income level. 

The ranking is: Salary sacrifice SIPP, non-salary sacrifice SIPP, LISA, then finally ISA.

Except… that LISAs and non-salary sacrifice SIPPs are tied if you retire at the State Pension age. 

LISAs vs SIPPs: tie-breaker situation

There are quite a few scenarios that end in a draw between LISAs and pensions. Let’s head into the tie-breaker:

Priority LISA SIPP
Access before age 60 No Yes
Can help to buy a house Yes No
Inheritance tax benefit Spouse Spouse6
Means-testing / bankruptcy advantage No Yes
Tax-strategy diversification Use both

I don’t think the few years’ gap in account accessibility is an issue. You can always drawdown harder on pensions until age 60. 

Interestingly, the government seems to have cooled its jets on advancing the normal minimum retirement age in lockstep with the State Pension age. 

Accessibility aside, the LISA’s low allowance, restrictions on contributions beyond age 50, plus the principle of tax-strategy diversification all suggest maxing out the LISA if/while you can. 

That goes double if your financial position means that salary sacrifice actually makes you worse off. Hit that link for the gory details. 

Pensioned off

There have probably been retirements that lasted less time than it took to write this post. Alas recent developments have not made the SIPP vs ISA question any easier to answer, I’m sorry to say. 

But I hope this guide helps you think through the options. Assuming you haven’t lost the will to live in the meantime. 

Do I need to plug taking your employer pension contributions one more time? Probably not…

Take it steady,

The Accumulator

P.S. Here’s more on how much should you should put in a pension and how much you need to retire

P.P.S. We’ve updated this post as noted to reflect the latest output of our fearsome spreadsheets given today’s realities. Many comments below will refer to the earlier iteration of the post, so please have a care when perusing.

  1. The Normal Minimum Pension Age will be 57 for most people from 5 April 2028. []
  2. Anyone until April 2027. []
  3. As the rules stand. []
  4. That includes the Personal Allowance and any 25% tax-free cash. []
  5. Personal Allowance []
  6. Anyone until April 2027. []
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Our Weekend Reading logo

What caught my eye this week.

Here’s a reminder as to why I tag Moguls – our premium membership content for select Monevator readers – as ‘not for everyone’.

Our last two Moguls articles showcased a model portfolio of mostly actively managed investment trusts that aims to deliver a natural yield for long-term income.

In contrast, the latest SIPP report just dropped from Interactive Investor. And it reveals that for the first time, passive funds have overtaken active funds as the most popular choices for SIPP investors on the II platform – for both accumulating and deaccumulating investors.

According to the accompanying bumph:

Appetite for investment trusts has waned in recent years, and our data illustrates this is the case for investors across the board.

By contrast, allocations to ETFs have surged with SIPP investors wooed by their simplicity and low costs.

Play a sad bagpipe lament from Spotify as you peruse the waning of the investment trust era:

Source: Interactive Investor

Six out of the top ten funds for accumulators are now passive funds. Three of them are Vanguard LifeStrategy offerings. Global trackers make up the rest of II’s popular passives list.

This is all to be celebrated.

My pitch for Moguls is not a cunning bluff. I believe most people should be passive investors. That this message has got through – and that more investors are widely-diversifying using the funds highlighted – is cheering, and a far cry from when this blog began life back in 2007.

Some of us are investing nutters though. Or we just have a competitive urge to try to do better.

I hope investment trusts survive to help us scratch our itch. And if they don’t, there’s always stockpicking.

Passive investors can be passionate investors too, of course. Please sign-up to our Mavens premium content if that’s you. The Accumulator has been knocking it out of the park with his monthly deep dives.

A quick note on RSS feeds

I was surprised to learn this week that a few Monevator readers still follow our site via RSS. (If you’re under 30 and have no idea what I’m talking about, ask the nearest Gen X-er).

Sadly I found out this because our age-old RSS feed seems to have broken.

We’re not yet sure exactly what’s gone wrong. It looks like some kind of redirection issue. But as best I can tell this source feed should be good for now. You might have to resubscribe to follow it.

I’m aware some icons around the site still point to the old and possibly terminally knackered RSS feed. But I’m not changing the links until I’m sure what’s up.

Personally I’d subscribe via email. The writing has been on the wall for RSS for years. But we’ll try to keep supporting it for as long as we can.

Have a great weekend!

[continue reading…]

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Monzo, EIS, crowdfunding and capital gains tax

The Monzo logo

After many false dawns, it looks like the UK fintech darling Monzo could be a public company by the end of next year. It will be a red – or coral pink – letter day for early investors who backed the challenger bank a decade ago. But an IPO could also put this rare win for crowdfunding and capital gains tax on a collision course.

Think of stuffed pillows running into a buzzsaw.

That’s because Monzo was not eligible for Enterprise Investment Scheme (EIS) status for any of its five money-raising rounds on Crowdcube. For reasons I’ve never understood – lingering ill will after the financial crisis, perhaps – financial outfits such as neobanks are not eligible for EIS tax relief.

Long story short, unlike most crowdfunded projects in the UK, because Monzo was not EIS-eligible, gains could be liable for capital gains tax if and when Monzo does IPO and an investor decides to sell.

And given the big cuts to the CGT allowance since Monzo raised its money, this is going to hurt.

Making money out of Monzo

I should declare my interest: I’m a Monzo shareholder.

Alas I missed the first Crowdcube fundraising round. But I lucked my way into the second round and did a small follow-on investment in the third.

That first round though is the stuff of crowdfunding legend.

Monzo – then called Mondo – raised the £1m it sought in a mere 96 seconds, and crashed the Crowdcube servers. Just 1,877 ordinary investors were able to buy shares at 51p, for a pre-money valuation of £29m.

The maximum investment amount for that round was capped at £1,000. But with Monzo sporting a share price of £14.41 as of its last institutional valuation, the resultant 28-bagging return would still see first round backers sitting on an investment of £28,255 today. On paper anyway.

Crowdfunding investors in the next couple of rounds have done well too. Monzo’s share price quickly escalated through these rounds – from £1 to £2.35 then £7.72 – with the price topping out at £14.41 after a couple of institutional raises.

This reflected a company valuation of £4.5bn when Monzo enabled its staff to sell some shares in 2024.

Monzo crowdfunders and capital gains tax

Considering the nice-problem-to-have plight of Monzo’s earliest investors reveals just how much harsher the UK’s capital gains tax regime has become in recent years.

The annual CGT allowance was £11,300 when Monzo first raised money in 2017. The allowance had increased to £12,300 by the 2020-21 tax year.

But it was slashed to £6,000 in 2024.

And the annual CGT allowance is just £3,000 for the 2025-26 tax year.

Ignoring any other share gains, a Monzo shareholder who bought the maximum shares in the first round and sells them at a future IPO at today’s share price would book a capital gain of:

  • £28,255 (sale proceeds) minus £1,000 (cost of shares) = £27,255

The £3,000 CGT allowance will then reduce their taxable gain to £24,255.

Assuming they are a higher-rate tax payer, this will result in a tax bill of:

  • 24%*£24,255 = £5,821

From memory all the early Monzo rounds were capped at £1,000 per investor. We won’t hear stories of crowdfunded Monzo millionaires. But the amounts will still be large enough to deliver a nasty tax surprise for the unwary.

Take it as a reminder to double-check for EIS status when making investments in start-ups.

For example, I’ve noticed quite a few European and even US companies raising money on crowdfunding platforms in recent years. These do not qualify for EIS, so you’ll miss out on any long-term capital gains exemption benefits, as well as the income tax relief you get with EIS.

How you’re taxed, and what to do about

I actually have a friend who invested the maximum in the first two Monzo rounds. Despite him thus having unicorn status in the crowdfunding pantheon, when I told him about the recent IPO rumblings he was unaware (or had forgotten) that Monzo did not enjoy EIS relief, and thus he’d be on the hook for CGT.

Again, read our primer on capital gains tax in the UK.

But to summarise:

  • You only become liable for CGT when you dispose of a chargeable asset. (That is something liable for CGT, such as Monzo shares).
  • Dispose usually means sell. Until you sell there’s no gain so no CGT to pay.
  • To get your Monzo shares into an ISA, you’d have to sell them and repurchase in the ISA. (I’ve heard chatter that ‘transferring’ to an ISA sidesteps CGT. It doesn’t!)
  • As I mentioned you can make £3,000 in capital gains in a year tax-free.
  • CGT is charged at 18% for basic-rate taxpayers and 24% for higher and additional-rate payers.

You can already see the easiest way to avoid CGT when Monzo floats will be to not sell your shares!

That way there’s no gain realised, so no tax to pay.

But of course you might want to sell your Monzo shares – or those in another successful start-up without EIS status.

Perhaps you think Monzo’s mooted £6.5bn valuation sounds toppy? Or maybe after a decade with your money locked way, you just want to take some off the table?

On valuation, we’ll have to see where Monzo floats. But £6.5bn isn’t crazy for a fast-growing fintech.

The US neobank Chime recently filed for IPO. Its valuation is put at $20-25bn. Chime has fewer customers than Monzo – eight million versus Monzo’s 12m – and it looks less attractive on other metrics too. Against that it does address the far larger US market.

Achieving a big valuation matters when investing in risky start-ups. You need to squeeze all the gains from your winners to make up for the losers.

For instance I’ve written for Moguls about a 31-bagger that I’ve kept hold of, hoping for a 100-bagger.

It’s a far smaller company though. I concede it’s hard to imagine Monzo 28-bagging again anytime soon.

Tax mitigation options are limited

Even if you do want to sell, I wouldn’t rush in a situation like this.

For starters, think about your tax band.

Whether you’ll pay capital gains tax at the basic or higher CGT rate is determined by your total income. That is, your income from sources such as your salary combined with your capital gains.

Even if you’re normally a basic-rate taxpayer, this calculation may take you into the higher-rate income tax band and thus see your capital gain taxed at the higher CGT rate. You’ll probably want to avoid this if possible – by selling fewer shares so your total income remains within the basic-rate band, say, or by making one-off pension contributions to reduce your earnings.1

The most tax-efficient way to unlock your money would be to sell enough Monzo shares to realise a £3,000 gain each year, but no more. This way you’d defuse down your gains without paying CGT.

True, that will take a long time if you’re sitting on gains of £55,000 from multiple investment rounds.

But who knows? If you’re unlucky the market might reduce your gains too, once Monzo is listed on those high seas.

Which is another reason to sell, I suppose. Cozy private valuations will be a thing of the past once Monzo is a public company.

Monzo as a microcosm

A post about reducing capital gains tax on multi-bagging crowdfunding gains will prompt tiny violins from a decent majority of readers.

Perhaps accompanied by some schadenfreude, given how often I’ve called for higher inheritance taxes – which are arguably another tax on good fortune.

Indeed, some of you will ask what’s the difference?

Plenty, I say!

Firstly, investors who backed Monzo supported one of the UK’s few fast-growing tech-ish behemoths.

Don’t we want more of that? Why then are we whittling down the CGT allowance to trivial levels?

The CGT allowance should have at least risen with inflation since 2017. This would equate to over £15,000 for the current tax year.

Also, compare investment gains from startups to the vast majority of inheritance gains, which were simply earned by buying a big house back when they were cheap and living in it.

I don’t begrudge people their individual good luck in property. But high house prices don’t do much for economic growth or general prosperity in the round.

The second difference is that unlike the recipient of an inheritance, people risked their own savings to earn these gains from Monzo.

My friend I mentioned is doing well enough now. But back in 2017 his first £1,000 investment was meaningful money for a 20-something getting his career underway.

Statistically he was likely to lose all his money in Monzo. The ranks of super-successful crowdfunded companies are thin – the better-than-average late-2010s fintech included.

I lost the lot with a couple myself. Even the exit of Freetrade delivered only derisory gains in the end.

Compare that with the lucky recipient of an inheritance. They risked nothing and did nothing to earn their windfall except to not piss off their parents too badly.

Best of British

Ultimately what kind of environment do we really want in Britain?

I vote for a vibrant, go-getting economy that rewards hard word, risk taking, investment, and entrepreneurship over taxing income and gains to enable more feudal hoarding and social immobility.

Of course the EIS scheme does what I want. The only snag with Monzo is it didn’t qualify.

But EIS was introduced way back in 1994. A different time and place to today, when relatively few were in the higher-rate tax band, shelters like ISAs (then PEPs) were growing in scope, and wealth creators with lumpy incomes could make big pension contributions in the good years without penalty.

Famously, even New Labour in the late 1990s was relaxed about people getting rich. They’d come to understand that growth fuelled the engine that ultimately paid for the state and benefited everyone.

Then of course we had a boom in London for most of the first 15 years of the 21st Century, with the UK capital attracting bright talent who founded multi-billion-pound startups like Skype and Revolut.

Perhaps the peak of this era for Monevator readers came with the pension freedoms of a decade ago.

But recently? Brexit dragging down GDP, skilled foreign workers, entrepreneurs and investment going home or elsewhere, frozen tax thresholds, an exodus of millionaires and billionaires, London property stagnant for a decade, the NHS and other services creaking even as we pay more taxes, and higher rates on capital gains and dividends even as allowances have been slashed.

On the surface today’s post is very niche. Only a few tens of thousands of individuals will be able to cash in when Monzo floats. Most of them were late-round investors so even their gains won’t be huge.

But as a reflection of what the British economic engine can achieve at its best – and how recent times have thrown grit in this machine – I’d suggest it’s relevant to us all.

  1. Note: This calculation does not affect your marginal income tax rate. It only determines the CGT rate you’ll be charged on capital gains. []
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Money market vs bonds: which is best?

Many DIY investors have given up on bonds. They’ve thrown their lot in with money market funds instead. I think that’s a mistake.

The evidence suggests that replacing bonds with money market holdings is liable to suppress portfolio returns and leave you under-diversified in the face of future stock market crashes.

Let’s see why.

Money market vs gilts: five-year returns

Our first comparison pits a money market ETF versus an intermediate gilts ETF in a cumulative nominal return head-to-head:

Investing returns sidebar – All ETF returns quoted are nominal, GBP total returns (including interest and fees). All asset class index returns are annual, inflation-adjusted, GBP total returns (including interest but not fees). ETF returns data and charts come from JustETF. Gilt annual returns are from JST Macrohistory1 and FTSE Russell. Money market annual returns are from JST Macrohistory and the Heriot-Watt / Institute and Faculty of Actuaries / ESCoE British Government Securities Database. UK inflation statistics are from A Millennium of Macroeconomic Data for the UK and the ONS. May 2025.

Strewth, intermediate gilts lost 28.4% in the past five years! And that’s without trowelling on extra misery from inflation, which the data provider doesn’t incorporate into its graphs.

The real terms loss is more like 38%.2

So much for bonds’ reputation as a ‘safe’ asset.

The money market also inflicted a 9.6% real-terms loss too – but that’s only a quarter of the kicking meted out by bonds. One in the nuts rather than four-times in the nuts.

I find it easier to compare real annualised returns when assessing investments, so I’ll translate the ETF results into that format as we go. (I’ll use inflation-adjusted annual index returns to continue the match-up all the way back to 1870.)

Here’s the real annualised returns for the past five years:

  • Money market: -2%
  • Intermediate gilts (All stocks): -9.2%

Money market wins!

Money market vs gilts: ten-year returns

We’re supposed to care more about the long term, right? Our investing horizons ought to be counted in decades not a handful of years.

Let’s zoom out to the past ten years, the maximum time frame offered by most data houses:

Do I hear: “So you’re telling me that gilts lost money over the last ten years? I’m out.”

Meanwhile, money market funds – popularly billed as ‘cash’ – are up 15% in nominal terms.

(Incidentally, money market funds are ‘cash’ in the same respect that bonds are ‘safe’. Read that article for more.)

Real annualised ten-year returns:

  • Money market: -1.5%
  • Intermediate gilts (All stocks): -3.6%

Money market wins!

If you can call a loss winning.

Money market vs gilts: 15-year returns

Let’s keep going. If money market funds are the superior product then they should dominate beyond the last decade. Ten years is nothing much. We overweight its importance due to recency bias.

Well, this complicates the picture.

If you held both ETFs in equal measure for the past 15 years then your money did better in gilts – despite the enormous bond crash of 2022.

Real annualised 15-year returns:

  • Money market: -1.8%
  • Intermediate gilts (All stocks): -0.9%

Gilts win!

On this view, money market funds were twice as bad as gilts over the last 15 years.

Mind you, gilts still turned in a decade and a half of negative returns. Nobody comes out of this looking good.

Money market vs gilts: 18-year maximum ETF timeframe

The easily-accessible ETF data runs out around the 18-year mark. Money market funds are only lagging further behind at this stage:

Gilts returned 64% more than money market funds over the entire period that both asset classes became accessible via ETFs.

Real annualised 18-year returns:

  • Money market: -1.4%
  • Intermediate gilts (All stocks): -0.1%

Gilts win again!

True, 18 years worth of negative returns for both asset classes is a poor show. There’s no denying that.

Over the longer run though, they still both offer the expectation of a real-terms gain, which is why they have a place on our list of useful defensive diversifiers.

Thrive or dive

Money market returns were undone over the 18-year view by the period of near-zero interest rates triggered by the Global Financial Crisis (GFC).

Meanwhile gilts were scuppered by the abrupt return to interest rate ‘normality’ as central banks fought post-Covid inflation.

Lost decades happen. That’s the nature of risk.

We’ve documented such wilderness years for equities and gold:

Nothing is ‘safe’. Every asset class can destroy wealth. That’s why the likes of shares offer you potential returns high enough to beat cash in the bank.

Because we can’t know which risks will materialise in the future, we diversify our portfolios by holdings assets that respond differently to varying conditions.

Not diversifying tempts fate like a farming monoculture. It works until it doesn’t and then failure can be catastrophic.

Keeping hold of what you have

It’s especially important to diversify your defensive, non-stock assets as your pot grows to a significant size. Preservation becomes as desirable as growth, psychologically, once you cross a certain threshold.

The growth side can still be adequately diversified by a single global tracker fund.

However defensive asset allocation is trickier, and neglected because it is complicated to execute, suffers from industry over-simplification, and is less well understood by the public at large.

To be fair, it’s not an easy problem to solve. I guess that’s why many people are throwing up their hands and dumping everything in money market funds.

But I digress.

Money market vs gilts: 125-year returns

Let’s finish off our money market versus gilts drag race. We don’t need to stop after 18 years. We can keep comparing bonds and money market returns all the way back to 1870.

If money markets really do beat govies then they’ll be back in the lead before long, eh?

YearsMoney market real annualised returns (%)Gilt real annualised returns (%)
20-10.1
300.52.4
401.73.6
501.24
1000.41.5
1250.40.8

Turns out there is no truly long-run timeframe (beyond the past ten years) over which money markets beat government bonds.

Indeed gilts offer twice the reward of money markets if we take the 125-year average as a yardstick for expected returns, which is a reasonable thing to do.

If we were comparing equity returns, which asset class would you invest in? The one that did better over the last ten years? Or the one that delivered twice the return over the last 125?

Why is it different for money market funds versus bonds?

Why have bonds been cancelled?

The trouble is this happened only yesterday in our cultural memory:

The bond crash of 2022 rendered gilts toxic in the minds of many who lost money in it, or those who see its backwash polluting the trailing return figures. 

In contrast, money market funds came good over this short period. (Albeit after delivering 12 years of negative real returns in the previous 13 years.)

There’s a straightforward explanation for this reversal in fortune.

Steep interest rate rises (as per 2022) batter longer duration securities like intermediate gilts.

But they boost money market funds because such vehicles are chock full of short-term instruments that quickly benefit from higher rates.

Short versus long durations

The simplest analogy is fixed-term savings accounts.

If you knew interest rates were about to rise then you’d surely hold very short-term fixed savings accounts beforehand – or better yet, easy access. This way, once interest rates rose, you’d only have to wait a matter of days or weeks to switch your dosh to a bank account offering a plusher rate of return.

But what if interest rates were about to fall and stay down for years?

Then you’d want to lock up your money for as long as you could. You’d know the banks were about to pull their best offers and replace them with stingier ones.

Money market funds are the equivalent to easy access bank accounts in this analogy. They’re the fixed income place to be when interest rates rise, but the place not to be when they fall.

The rub though is that none of us know the trajectory of interest rates. Even the experts fail to predict the future path of interest rates with any reliability.

This is part of the reason why it makes sense to hold both bonds and money market funds. (Or straight spondoolicks instead of money market if you can squirrel enough away into cash ISA boltholes.)

The last five years of fixed income returns are dominated by a nasty sequence of interest rate hikes. Hence money markets won.

But the main event 17 years ago was unprecedented interest rate cuts to near-zero – intended to defibrillate Western economies in the wake of the GFC. Hence money markets lost.

Signal to noise ratio

Trailing returns are shaped by the events that they capture.

The shorter the time frame under review, the more likely it is to reveal only the singular events it records – while telling us little about the mean behaviour of the asset class.

Extraordinary events may not repeat in your future.

I was listening to a podcast recently that claimed business investment was suppressed in the 1950s because people assumed World War Three was all but inevitable given their recent experience.

The important thing about the 125-year record is it contains most of the information we’ve gathered to date on money market funds versus gilts.

Such data covers how each asset performed during two World Wars, two pandemics, one Great Depression, stagflation, the bursting of a tech bubble, plus multiple inflationary shocks, recoveries, go-go years, and interest rate cycles.

This long view tells us that gilts delivered much better average returns across the full spectrum of known economic conditions.

If you ever check past performance figures before investing, then this is the timeframe to care about – because if you’re playing the percentages, then 125 years is the most signal-rich comparison we have.

The underlying rationale

Financial theory helps explain why gilts should eventually reassert their return superiority over money market funds.

It’s that risk-reward trade-off again.

Gilts are the riskier asset in that they’re more volatile. Longer duration bonds can suffer violent reversals such as those seen in 2022. They also frequently deliver double-digit returns, for good or ill.

Double-digit gains and losses are comparatively rare for money market funds. They’re more stable, like cash.

But over time, there’s a price to pay for stability – a lower long-term rate of return. (Also known as cash drag.)

We invest in equities because they’re risky, not because they’re easy to live with. We want to pocket the greater reward that we can reasonably expect for taking this greater risk. Every DIY investor who knows what they’re doing has bought into this.

So why not with bonds?

Diversify your defences

My real argument isn’t pro bonds or money market funds.

I think there’s a case to be made for both.

How much you hold depends on who you are, your financial situation, and your time of life.

For accumulators, the biggest danger is you’re scared out of your wits and the market by a horrendous stock market crash. Intermediate government bonds better protect you against that fate than money markets.

Later in life, especially as a retiree, inflation is likely to be your fiercest foe.

Money market funds against inflation are like high city walls against early cannon. They’re not a good defence but they’re better than nothing. They typically outclass intermediate gilts in that situation.

Meanwhile, gold is an unreliable ally against inflation.

I personally think older investors should seriously consider allocations to individual index-linked gilts and / or commodities and / or gold.

That way you’re defended by multiple layers of fortifications when the inflationary enemy is at the gates.

Take it steady,

The Accumulator

  1. Òscar Jordà, Katharina Knoll, Dmitry Kuvshinov, Moritz Schularick, and Alan M. Taylor. 2019. “The Rate of Return on Everything, 1870–2015.” Quarterly Journal of Economics, 134(3), 1225-1298. []
  2. I use annual index returns to calculate inflation-adjusted returns. []
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