Disclosure: Links to platforms may be affiliate links, where we may earn a commission. This article is not personal financial advice. When investing, your capital is at risk and you may get back less than invested. With commission-free brokers other fees may apply. See terms and fees. Past performance doesn’t guarantee future results.
What is the cheapest stocks and shares ISA available?
The investing world can be complicated, but this time we have a simple answer for you.
Right now the cheapest stocks and shares ISA is the DIY option from InvestEngine.
InvestEngine is the lowest cost stocks and shares ISA on the market because right now it costs nothing.
Zip! Nada!
Now that’s my kind of price range!
Read on for more about InvestEngine’s share ISA.
Cheapest stocks and shares ISA: good to knows
InvestEngine’s ISA costs zero for annual fees, dealing charges, FX fees, entry/exit levies and most of the other multi-headed investment costs that snap at our wallets like a financially-incentivised Hydra. (It’s little known that the Ancient Greek polycephalic snake-beast was on a bonus scheme. Fifty drachma per hero slain.)
The only costs you will pay are the usual Total Expense Ratio / Ongoing Charge management fees that must be borne when investing in any fund, plus trading spreads. So far, so standard.
The platform’s downside is that its range of ETFs is more restricted than costlier platforms, and you can only trade at fixed times per day.
Frankly though, I think that’s a reasonable trade-off. Especially because you can easily create a good investment portfolio from the ETFs available.
Read our full InvestEngine review. We like it. Just make sure you choose the DIY ISA, not the managed one.
Our only concern is how long can the service remain free?
We’ve previously investigated how zero commission brokers make their money. In InvestEngine’s case, it’s mostly hoping you’ll opt for its paid managed offering.
Cheapest stocks and shares ISA: alternatives
There are plenty of other commission-free brokers out there now including Freetrade, Lightyear, Prosper, Trading 212, and IG. Prosper and InvestEngine don’t charge FX fees, the rest do.
This piece explains how you can avoid FX fees using ETFs.
Some Trading 212 users also report paying higher bid-offer spreads on their trades than may be the case on other platforms.
It’s very hard for us to know if they’re right, but no platform can afford to offer its services for free. They all have to make money somehow. They will usually tell you how they do it if you search: “How does ‘Broker X’ make money?”
Cheap stocks and shares ISA hack
What if InvestEngine’s prices creep up, or you don’t like its pool of ETFs, or you want an alternative because you’re concerned about the FSCS investor compensation limit of £85,000?
In that event let’s recap our cheap stocks and shares ISA hack. It still delivers tax shelter satisfaction for an exceptionally low cost.
Here’s how the hack works:
- You begin by drip-feeding into your stocks and shares ISA with the best-value percentage-fee broker on the market.
- Once your ISA is full you transfer it to the cheapest flat-fee broker.
- You don’t buy and sell your investments at the flat-fee broker. You only trade (for zero commission) on your percentage-fee platform.
- In the new tax year, you open a fresh stocks and shares ISA with the percentage-fee broker.
- Rinse and repeat.
You now enjoy a best-of-both worlds deal that takes advantage of the brokerage industry’s niche marketing strategies.
Percentage-fee platforms offer the best terms to small investors. They tend to rake it in once your account swells beyond £25,000 to £50,000. They’re relying on your inertia.
Flat-fee brokers offer good rates to large investors. They hope to make it up in trading fees. They’re relying on high rollers who treat their portfolios like a night at the casino.
You can arbitrage these cost models, provided you’re active in transferring your ISA and then near-comatose once you’ve parked it at your long-stay platform.
Cheap stocks and shares ISA hack in action
AJ Bell Dodl offers the cheapest percentage fee stocks and shares ISA.
It charges 0.15% on the value of your assets (£1 per month minimum) and zero for trading fees. 1
Were you to drip-feed your ISA allowance in evenly (£1,666 every month), you’d pay approximately £18 in platform fees for the year.
Leave your assets with Dodl forever though and it’ll keep charging 0.15%, which will add up. For example, you’ll pay £150 per year when your account has accumulated £100,000.
But you’re not going to hang around.
Instead, you transfer your ISA to the most convenient flat-fee platform for long-term stashing. There’s a few choices but the cheapest is Scottish Widows Share Dealing (formerly iWeb).
Scottish Widows charges a quite reasonable £0 for platform fees.
Dealing commission is much less competitive at £5 a throw. But we’re not trading there so we plan to pay pretty much zero pounds to Scottish Widows.
- Total cost of your stocks and shares ISA per year = £18 approx.
Not bad! Better still, Dodl currently waives its fees for the first 12 months when you open a stocks and shares ISA. (Dodl calls it an ‘investment ISA’.)
Once your ISA is full, just transfer it out. You can do so whenever you like – for example after you’ve paid in your last contribution during the current tax year.
Open a fresh stocks and shares ISA with Dodl on new tax year day (6 April) while your old one is lodged with Scottish Widows, gratis.
Before you transfer, make sure your Dodl portfolio holdings are tradable at Scottish Widows.
You don’t want to have to sell out of the market and then buy your portfolio again when it arrives at its new home.
Even if you’ve opened other ISAs this tax year, you can still activate a new stocks and shares ISA with Scottish Widows.
Arguably, you can do so even if you’ve maxed out your annual ISA allowance, as Scottish Widows doesn’t require you to fund your stocks and shares ISA with it.
Low-cost stocks and shares ISA: alternatives to Dodl
Dodl is AJ Bell’s spin-off app-only brand. The snag – apart from that app-only business – is its investment list is quite restricted.
The essentials are all there: a good global tracker fund, government bond funds, a gold fund, and money market option. But you’re not exactly spoilt for choice.
To access a wider range of funds check out:
- Barclays Smart Investor
- HSBC Global Investment Centre (HSBC funds only)
- Trinity Bridge
All three charge 0.25% on the value of your assets and nothing for trading fees – so long as you stick to investing in funds.
- Total cost of your stocks and shares ISA per year = £27 approx.
You’ll incur trading fees if you stray into other investment types.
Alternatives to Scottish Widows
You’d expect to pay £36 a year for your investment ISA at Halifax or Lloyds Share Dealing. (They’re the same firm).
Trades cost extra at these brokers – but you’ll do your buying and selling at Dodl.
Sitting on a £20,000 investment ISA at Dodl costs you £30 a year alone. Plus another £18 on top as you build up your current tax year’s ISA.
Still, the bottom line is that InvestEngine and (other zero-commission brokers) offer the cheapest stocks and shares ISA option. The Dodl / Scottish Widows combo places second in most scenarios if you make monthly trades.
The other main compromise with Scottish Widows is its website is basic. Reviews on the likes of Trustpilot are distinctly average.
It’s a bare bones offering so don’t rock up expecting five-star customer service.
But I’ve personally dealt with what was iWeb for many years and found it to be perfectly acceptable. Plenty of Monevator readers say the same.
Note: accounts held with Halifax / Bank Of Scotland, Lloyds Bank, and Scottish Widows count as one for the purposes of the FSCS investment protection scheme.
Look mum, no transfers
If you hate the idea of filling in transfer forms then you can make the entire hack work at a slightly higher cost at Fidelity:
- Buy funds monthly for zero trading fees while racking up platform fees at 0.35% per annum.
- Once you hit the breakeven point, sell your funds and buy as few ETFs as possible to reconstitute your portfolio at £7.50 a trade.
- Fidelity caps ETF fees at £90 per year.
- Beware: you have to buy funds monthly using Fidelity’s regular savings plan to enjoy the 0.35% charge. Otherwise, they’ll smack you up with a £7.50 a month minimum fee.
If you can invest monthly, there’s no need to worry about ISA transfers with this scheme. The entire dosey-doe happens within your Fidelity stocks and shares ISAs.
It works because Fidelity act as a percentage-fee/zero commission broker with funds, and a flat-fee broker with ETFs.
Do it all with Scottish Widows
Yet another option is to hold your ISA with Scottish Widows and only ever buy monthly using its regular investment plan.
- Total cost of your stocks and shares ISA per year = £0
You will incur dealing fees at £5 per trade if you ever want to sell a holding – for example to rebalance. But this is still a great option if you’re as active as a koala after a heavy lunch. 2
For cheap fund and ETF ideas check out our low-cost index fund page.
Tidying up the loose ends
All the cheap stocks and shares ISA options laid out above handle ISA transfers free of charge.
You need to transfer your investments in specie (so they’re not sold to cash) to avoid paying dealing fees to your flat fee broker at the other end.
In Specie or re-registration transfers mean you don’t have to worry about being out of the market either.
Check your new broker offers the same funds and ETFs as your old one.
Invest in accumulation funds and ETFs from the beginning. This will save you paying to reinvest dividends at the flat-rate broker.
I’ve ignored rebalancing costs once you’re all parked up at your cheap platform. A small investor should be able to rebalance with new money. Anyone with an embarrassment of riches can set their rebalancing alarm to once every two or three years. That gives you just as good a chance of being up on the deal as any other rebalancing method.
Or you could invest everything in a Vanguard LifeStrategy fund. LifeStrategy is a multi-asset fund that takes care of rebalancing for you.
Either way, rest assured this manoeuvre does not contravene the stocks and shares ISA rules:
- You can have as many stocks and shares ISAs as you like.
- Transferring old ISA money or assets does not use up your ISA allowance for the current tax year.
- So every tax year, you can open a new ISA at the percentage-fee broker, and ship last year’s ISA to the flat-free broker.
- You can transfer any amount of your previous years’ ISA’s value. You can transfer the whole lot into one ISA, or transfer a portion of it into several ISAs, or any other combo you desire.
Read more on stocks and shares ISA transfers.
See how to calculate your cheapest platform option.
Our broker comparison table tracks the UK’s best platforms.
Cost shavings
If you truly want the cheapest stocks and shares ISA possible then you’ll need to factor in the cost of the low-cost index funds and ETFs available on any platform versus those available through Dodl.
Paying slightly higher OCFs than necessary could overwhelm your platform fee / dealing fee savings.
Also, none of this takes into account the value of your time spent filling in forms. Although when you’re getting this anal then maybe that’s a net positive. (A person’s gotta have a hobby!)
Take it steady,
The Accumulator
Note: this article on the cheapest stocks and shares ISA was updated in Spring 2026. Comments below are kept for posterity and general interest but may refer to old charging schemes, so please check when they were posted.








