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The tax-free Lump Sum Allowance conundrum

Image of a man in a suit with ‘tax’ written over his head

In his debut article for Monevator, new contributor The Engineer ponders the imponderable: should he take his tax-free lump sum from his pension before the chancellor potentially takes the perk off him?

Hold onto your hats: it’s Budget season once more! Where will the tax axe will fall this time: rental income, pension tax relief, property, capital gains, or inheritance?

Pick your poison punters.

The contender that has generated the most column inches is the potential curbing or demise of the 25% tax-free pension lump sum – the beloved pot at the end of the long slog of a working life rainbow that is all yours to keep, unmolested by HMRC.

Generally, the advice from the experts is it’s foolish to second guess the chancellor and take drastic steps with your personal finances based on rumours. More specifically, it’s that you shouldn’t take your tax-free cash unless you already have a plan to spend it on something sensible like paying off the mortgage or giving it to your kids.

But ever more people are ignoring that advice. They are grabbing the tax-free cash while they can.

As This Is Money reports:

Mounting fears of further changes to pension rules in the upcoming Autumn Budget are pushing more savers to withdraw from their retirement pots, figures show.

The investment platform Bestinvest said it saw a 33% rise in withdrawal requests from customers with self-invested personal pensions or SIPPs in September […]

Bestinvest said the recent withdrawals were largely made up of those aged over 55 accessing their 25% tax-free cash lump sum, amid concerns that Chancellor Rachel Reeves may slash the tax-free withdrawal allowance.

I too am weighing up the pros and cons.

The media debate is mostly an emotional one. “The government’s going to rob me!” versus “Pensions are great! They’re tax-free!”

However I’m not sure either of those claims is true.

Monevator readers will demand a more sober analysis. Here is my attempt.

Wealth warning and disclaimer Everyone’s tax situation is famously individual, and your pension is a super-valuable and usually irreplaceable asset. This article is not personal financial advice – it’s just one man’s musings about his own situation. Seek professional advice as needed.

A sober analysis of the Lump Sum Allowance

The question under the microscope: in what circumstances would it make sense to take your tax-free lump sum out of your defined contribution (DC) pension and then invest it outside of the pension?

The crux? That future growth on my lump sum could be taxed outside of the pension – ISAs notwithstanding – but would compound tax-free while it’s still inside.

Then again, any growth inside a pension might still get taxed on withdrawal.

Hence we need to compare:

  • income tax on pension withdrawals at some unknown point many years in the future

against…

  • the compound effect of some combination of interest, dividend, and capital gains tax on my lump sum when it’s invested outside of my pension.

The sheer number of factors at play is mind-boggling. Any attempt at a general analysis is doomed to die in a morass of imponderables.

But maybe we can look at it one factor at a time? Then we can at least establish some guidelines that might help us reach a decision.

For a start, we’ll assume that all pension and tax rules remain unchanged for the duration. (Although we will come back to this.)

Effective tax rate INSIDE the pension

Let’s assume your pension has already reached the old Lifetime Allowance (£1,073,100) and therefore the maximum possible tax-free lump sum (£268,275), now known as the Lump Sum Allowance (LSA).

In this case all future growth inside the pension will be taxed on the way out. If you expect to be a basic-rate taxpayer at the point of withdrawal, say, then this will mean tax at 20%.

Remember this is the effective tax rate on the future growth in the pension. Not necessarily on the whole pension.

I’m assuming here that you don’t have any protected allowances.

Your going rate

It’s unlikely that your marginal tax rate will be lower than 20% later in retirement. The state pension is already using up pretty much all of the personal allowance, pushing most people into the basic-rate band on any additional income.

But it’s possible you expect to be a higher-rate or even additional-rate taxpayer in retirement.

Maybe you have a huge DC pension with protected allowances? Or a defined benefit pension (DB) as well as the DC pension. Or you’ll inherit a trust fund from great uncle Bertie.

In those cases the effective tax rate on growth inside your pension is going to be a lot higher.

Below the LSA

If you have yet to reach the LSA, then 25% of future growth will be tax-free (until you do hit the maximum).

For our analysis, we can think of this as two separate pots:

  • The 25% tax-free part on which future growth will be tax-free when withdrawn (at least while you’re still under the LSA)
  • The remaining 75% on which future growth will be taxed at your nominal tax rate on withdrawal

This approach reflects the fact that if you were to take out the tax-free lump sum, then the remaining 75% would be taken into drawdown and all subsequent withdrawals taxed at your nominal rate.

So, whilst the rate of tax on the growth of the pension as a whole would be 15% for a basic rate taxpayer (that is, 75% of 20%), the tax on the growth of the 25% lump sum can be considered as 0%.

And an effective tax rate of 0% is hard to beat!

Effective tax rate OUTSIDE the pension

The effective tax rate on growth of a lump sum held outside of a pension is even harder to tie down.

If you have spare ISA allowance, then the effective tax rate on the growth of whatever you manage to squirrel away into it would be zero.

Similarly, it would be zero if you have enough spare tax allowance to accommodate all the future growth, in whatever form.

As for tax rates:

  • If you keep the lump sum in cash, money markets, or bond funds, then you’ll pay your marginal rate of tax: 20%, 40%, or 45%.
  • Take your returns in dividends and it’s taxed at 8.75%, 33.75% or 39.35%.
  • As capital gains it’s 18% or 24%.
  • If you invest the lump sum in low-coupon gilts (directly held, not in a fund), then your effective tax rate would be very low, perhaps 1% or 2%.

Most probably your effective tax rate outside of a pension will be a combination of more than one of these, depending on your asset mix. In this case the rate will land somewhere in the middle.

Or perhaps it’ll be something very different if you’re prepared to take on truly esoteric tax planning.

What could be – ahem – simpler?

Comparing the tax rates

Obviously, if withdrawing the tax-free lump sum is going to work then I need to keep the effective tax rate on growth outside of the pension below the effective rate inside.

If you’re below the LSA, then you can’t beat the 0% effective tax inside a pension. The best you could do is match it with spare ISA and tax allowances.

If you’re above the LSA then some further thinking is needed.

The graph below shows the value of £1,000 lump sum invested outside a pension for 20 years (Y-axis), with a 7% growth rate, assuming varying effective tax rates on that growth (X-axis):

Here we’re comparing that lump sum growth (cyan line) against the same £1,000 tax-free lump sum held inside the pension and subject to a 20% tax on the growth when its withdrawn (pink line).

Again, note this is the tax rate on the growth only. The original sum is still tax-free whenever you decide to take it out. And we’re only thinking about the tax-free part of the current pension here.

So… eureka! With a lower tax rate the lump sum withdrawn will be worth more later!

“No shit, Sherlock“, I hear you cry.

Ah but it’s not quite that simple. You’ll see the lines in our graph don’t cross at 20%. Even if we have the same effective tax rate both inside and outside the pension, the lump sum outside the pension still loses.

Taxing matters

This is because there is a cost to paying tax as you go along, versus paying just once at the end. (It’s for the same reason that annual fees are so insidious.)

More graphs required, clearly.

Below the difference for the same £1,000 tax-free lump sum is illustrated for varying investment durations – that is, how long the money is invested for before being needed – and again assuming 7% growth and an effective tax rate of 20% both inside and outside the pension:

And now for a varying growth rate assuming a 20-year investment duration:

This shows that the damage done to your lump sum outside the pension grows with time and growth rate. It arguably suggests that high-growth long-duration investments are best left inside the pension.

But wait! That high growth and long duration might mean you end up paying a higher tax rate on withdrawal from the pension.

So perhaps it’s better to get it out early?

Also, I’ve assumed capital gains tax is paid each year. Whereas in fact it could be left to accumulate and be paid at the end of the period. Although that too might not be a good idea.

Enough! I have fallen into that morass of imponderables. Let’s just say that you’re going to need to see some clear daylight between the effective tax rates to make withdrawing fly.

Asset allocation

Some of this discussion on tax rates has implications for asset allocation.

If you have spare ISA or tax allowances, then the world is your oyster. Fill your boots with any asset class you fancy.

If, however, you’re trying to minimise your tax rate by allocating to higher dividend-paying assets or direct holdings in low coupon gilts, then you’re making decisions on asset allocation.

And it’s almost certainly not wise to change your asset allocation solely to get that clear daylight between effective tax rates.

If you were already planning to include higher dividend assets or gilts in your portfolio then great. Move that part outside of the pension.

Otherwise, best to knock the whole thing on the head. 

Inheritance

The tax-free inheritance of pensions will be gone by 2027.

This swings the pendulum a long way towards taking the lump sum sooner. Indeed it’s what has driven much of the increase in debate on this subject.

If you die before 75 then your heirs would currently inherit your pension tax-free. Any tax you’ve paid on a lump sum outside of the pension would have been wasted.

But I wouldn’t be surprised if this perk too is axed at some point. And in any case, you’ll be dead!

If you die after 75 then your heirs would pay tax on their inherited pension. In this case, if it made sense to take the lump sum when you were alive, then it will still make sense when you’re dead.

So not much to sway us either way here.

Known unknowns

Some things could change in future that would make me regret taking my lump sum early.

Such as:

  • The tax-free allowance is increased.
  • Tax-free inheritance of pensions gets a reprieve.
  • The tax rates on unwrapped investments are increased.
  • I am beset by riches from a burgeoning new career at Monevator and rocket up through the tax bands. [Um, take the lump sum if this is your concern – Ed]

Conversely, some things could change that would make me feel extra warm inside because I already have my lump sum tucked away in a GIA:

  • The tax-free allowance is reduced or axed.
  • The lifetime allowance is reintroduced.
  • Pension income is subjected to National Insurance or the equivalent in extra tax.

Our soaring national debt makes it hard to imagine that pension rules will get more generous. So on balance, the second set of risks seem more likely to materialise than the first.

That’s not to say that any of these will happen this November. It’s unlikely that the government would suddenly introduce a cliff edge cut to the tax-free allowance, say.

But neither do I think the issue will go away. Somehow, sometime, by a government of one colour or another, I believe it’s probable that pension tax relief will become less generous.

A tax increase on unwrapped assets would be a blow but it’s just as likely that the tax on pension income will be increased. Still, it’s another risk to keep in mind when looking at your relative effective tax rates.

The conclusion

If you think the government is out to get you then you should probably take the lump sum early.

Use it to buy gold bars and guns. To keep in your cabin in the woods.

Otherwise, if you’re still below the Lump Sum Allowance, then you should probably leave the lump sum in the pension, although you shouldn’t lose out if you take the cash and have enough spare ISA and/or tax allowances to accommodate it.

Even if you’re already over the LSA, in my opinion it would probably only make sense to take the lump sum early if:  

  • You have retired or have low earnings and therefore your future tax band is unlikely to be lower than your current one  
  • You have unused ISA or tax allowances and/or you plan to have higher dividend assets or gilts in your portfolio (as these would all enable you to keep your tax rate down)  
  • You don’t expect to die before 75  

This list is not definitive.

You don’t necessarily need all these to be true to make it worthwhile. Conversely, even if they are all true you might sensibly still not want to take the tax-free lump sum now.

You could wait a while and think about it later. The situation probably won’t change drastically in November.

(Probably.)

Decision time for yours truly

Of course it depends on your situation, but the arguments for withdrawal seem to stack up for me. That’s because I’m already at the maximum tax-free lump sum allowance and it makes sense for me to keep this part of my portfolio in gilts.

Even in the absence of any adverse tax changes, if I manage my tax carefully, I should still be up on the deal. And if – or more likely when – the pension tax axe falls then I’m supremely indifferent.

But before I push the Button of No Return, I’ll wait for any comments from you guys.

It’s quite possible the Monevator regulars will point out the flaws in my logic, and I will appear foolish.

Just as the experts in the media forewarned.

We’re certain to get new – even contrary – points raised by sharp Monevator readers in the comments. So even if you’re not a regular commenter, be sure to come back and check them out in a few days.

{ 14 comments… add one }
  • 1 Delta Hedge October 23, 2025, 12:42 pm

    Just please don’t let it be reintroducing the Pension Lifetime Allowance on 26 Nov.

    Going from no LA, via ever reducing LAs, to no LA, and then possibly back to a reintroduced LA, makes sensible planning for the future next to impossible.

    And all (so its reported in the press) for perhaps only a few hundred million p.a., peanuts for a government spending nearly £1.2 Tn and collecting already over £1 Tn annually.

  • 2 SoonToBeEarlyRetiree October 23, 2025, 1:30 pm

    Thanks for the interesting article! As a soon-to-be early retiree, I decided to take out the full lump sum. I’m up against the LSA, so I figured any future gain inside the pension will be taxed at least at 20%, since I’ll be already taking at least 12.5k Pa from the pension.

    After reading your articles on gilt ladders, I figured the best destination for the funds are Index Linked Gilts, which, as I understand it, have not capital gains tax on the increase on the principal. And the yields are really low, so any income tax is likely to fall under the personal allowance. Also, the lump sum can be gifted to your spouse, something that can make a lot of sense if you are the one with the biggest pension. Currently there is no other way of transferring part of your pension to you spouse (except via death or divorce, neither of which sounds appealing…!)

  • 3 Stephen Francis October 23, 2025, 1:32 pm

    A solution I am considering is to draw the maximum TFC and invest it in a Discounted Gift Trust with the Prudential, investing in their Prufund Growth fund. This is partially IHT exempt immediately and the balance exempt on survival for seven years. These pay a tax-free income of 5% (for 20 years) The gross return on the prufund Growth fund has been 7.26% p.a. over the last five years and it is a smoothed funds which reduces the sequence of return risk. That fits with my philosophy of having a foundation income in retirement to cover all the essentials alongside the State Pension. Aside from the income, the capital is also secure against long-term care fees if they arise. I am at the maximum TFC so feel it is unlikely to get any more and a good chance it could be less. I’d lose access to the capital but no worse than if buying an annuity.

  • 4 PC October 23, 2025, 1:47 pm

    I am a bit over the LA now, but nevertheless my plan remains to be to take the tax free lump sum bit by bit over 20 years or so, with the aim of avoiding paying higher rate tax.
    I’m relying on my bet that the tax free amount will stay frozen rather than disappearing. It’s impossible to know but I think that’s the most likely outcome.

  • 5 Vanguardfan October 23, 2025, 1:57 pm

    One important point – you say ‘your heirs’ will pay IHT on pension assets after April 2027. I saw no mention that of the fact that there is no IHT between spouses, so if you’re married/civil partnered then IHT only becomes an issue on the second death. Chances of both partners dying before age 75 is much lower than of one, and if one dies early the survivor knows they should get cracking with gifting and spending!

    Like PC, think that a continued freeze rather than nominal lump sum reduction is most likely. I also think that further tax increases on investments are more likely to be directed at unsheltered assets than pensions (given the IHT changes already announced). At least in the short term. Perhaps more far reaching reforms will be attempted at some point. But, what do I know.

    This article is timely as spouse’s pension has recently shot past the level at which the LSLA is exceeded. I can’t quite bring myself to take the lump sum out though. I just can’t be doing with GIA hassle. (I already have low coupon gilts outside shelters, I really shoudn’t hold more).

    @Stephen Francis that sounds like an investment bond, is it?

  • 6 Hal October 23, 2025, 2:39 pm

    Good reasons to take it now are:
    1) you’ve planned for decades to use tax free lump sum to pay off your mortgage as you enter retirement
    2) you planned to gift cash to your children now rather than after you die – so they can get on the property ladder etc etc
    3) you planned to retire and upgrade your house with new bathrooms, new kitchen with lump sum
    4) you can put lump sum cash in premium bonds and ISA to have 1-3 years cash bucket/emergency fund
    5) many many other reasons – you’ve spent your working life planning around the rules/advice given about the importance of saving into your pension

  • 7 Getting Minted October 23, 2025, 2:39 pm

    I’ve decided not to take my tax-free lump sum yet, but this threat did make me consider it. Taking it now doesn’t fit with my plan to spend my unprotected funds first. Also after looking into it I think that the government won’t remove the tax-free lump sum because there are too many in the public sector who would be impacted.

    “But long-serving public servants, even on relatively modest wages, could be affected by a cap in the lump sums generated from generous DB pensions. This measure, in particular, is almost ‘laser-targeted’ on affecting public sector workers.”
    https://insights.lcp.com/rs/032-PAO-331/images/LCP-How-to-avoid-an-%E2%80%98Omnishambles%E2%80%99-Budget-version-two-2025.pdf

  • 8 Mr Optimistic October 23, 2025, 2:41 pm

    Must be a fair chance this will be RR’s last budget and, given the weeping episode, perhaps she won’t mind.
    With all her talk about promoting growth I reckon she will major on that which she will present in such a way as she hopes will provide a positive context for the tax hits.
    She may put NI on pension payments but doubt it as this would steer money into ISA’s.
    For pension stuff, my bets are on reducing the annual pension contribution to say £30k. Reducing the scope of salary sacrifice (this was hugely advantageous to me especially as my employer kicked back their NI), scrapping the NI exemption for pensioners still earning. Not sure why she would touch the pcls.

  • 9 Alchemist October 23, 2025, 2:51 pm

    My circs: mid 60s, just over the LTA limit, drawing pension, and just into the 40% tax bracket most years.
    I’ve withdrawn all my tax free cash and invested it in a similar set of global trackers in a general investment account.
    Left to compound outside the pension wrapper, growth gets taxed at 24% (CGT). A bit more paperwork on the tax return if my investments were to pay dividends (most don’t).
    Inside the pension wrapper, growth gets taxed at 40% upon withdrawal. The investment is also a bit less liquid. And, post 2027, if I fall off my perch it also gets clobbered heavily for IHT *and* income tax.
    Pretty easy decision to withdraw the cash.

  • 10 Vanguardfan October 23, 2025, 2:59 pm

    @getting minted. I really don’t understand the logic of that argument re public sector pensions. Public sector pension schemes haven’t had a compulsory lump sum since the reforms of 2007/8 – so only people with membership from the older (now closed) schemes would be affected anyway. And it would be pretty easy (and usual practice) to protect the benefits from earlier schemes anyway – as has been done with previous pension reforms. Many people (private sector included) have protected tax free cash levels exceeding 25%, for example, or have protected minimum pension access ages below 55.

    So, no, its not a measure ‘laser focused on public sector pensions’. (not to mention, you’d need a pension of over £33k pa to be getting a compulsory LS of over £100k, and most are nowhere near that). And tbh the compulsory lump sum is generally well below the maximum 25% level, and the commutation rates are poor value.

    It would potentially affect those in DB schemes whose AVCs can be taken as part of the tax free lump sum (which includes LGPS and many private sector DBs, but not the unfunded public sector schemes).

  • 11 Vanguardfan October 23, 2025, 3:08 pm

    @alchemist, it only gets clobbered for income tax if you die after, say, 2035.
    I can see an argument for keeping it in the wrapper before that.
    And if you have a spouse still alive it won’t be clobbered for IHT until they die, if they can’t get rid of it before that (but that goes for your GIA too of course).

  • 12 Vanguardfan October 23, 2025, 3:14 pm

    @getting minted – I just read the article you linked with the quote about ‘laser focused on public sector pensions’. Its talking about the pension tax relief on contributions, not the lump sum allowance. And in relation to that, its quite right – its both practically and politically difficult to withdraw higher rate tax relief on pension contributions because of the impact on certain parts of the public sector (senior doctors, largely – but we have them to thank for the abolition of the LTA too)

  • 13 tetromino October 23, 2025, 3:45 pm

    Building on Vanguardfan’s comment about the hassle of using a GIA account:

    What’s the second simplest thing to hold in a GIA, after low coupon gilts, from a tax admin perspective?

    I think I could handle something like BRK.B if it meant I only needed to watch out for capital gains tax.

  • 14 DavidV October 23, 2025, 3:48 pm

    @alchemist (9)
    You say that your GIA investments don’t pay dividends. Is this correct? Even if they are Accumulation units/shares, I understand that there is a potentially taxable dividend payment even though it is reinvested by the fund manager. This was certainly the case when I held unsheltered unit trust accumulation units many years ago (in the era of dividend tax credits).

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