Best Stocks and Shares ISAs in 2026: Compared

Choosing a stocks and shares ISA might not sound exciting, but it is genuinely one of the most important financial decisions you’ll make this year. The platform you pick determines the fees you pay, and fees compound just like your returns do. Get it wrong and you’ll quietly bleed thousands over a decade without even realising.

I’ve spent far too long comparing platforms, so you don’t have to. Here’s my honest breakdown of the best stocks and shares ISAs in the UK for the 2026/27 tax year.

What is a stocks and shares ISA?

A stocks and shares ISA is a tax-free wrapper that lets you invest up to £20,000 per tax year in things like index funds, ETFs, individual shares, and bonds. Any growth, dividends, or interest you earn inside the ISA is completely free from income tax and capital gains tax.

If you want the full rundown on how ISAs work, I’ve written a detailed guide on what an ISA is. For now, just know this: if you’re investing and you’re not using your ISA allowance first, you’re leaving money on the table.

Why the platform you choose actually matters

Here’s the thing most people don’t think about. A 0.5% difference in platform fees doesn’t sound like much. But on a £50,000 portfolio growing at 7% a year, that 0.5% costs you roughly £18,000 over 20 years. That’s not a rounding error. That’s a holiday every year.

The right platform depends on how you invest. Are you a “set it and forget it” index fund investor? Do you want to pick individual shares? Are you just getting started with small amounts? Each of these needs something different.

Since April 2024, you can now open multiple stocks and shares ISAs in the same tax year. This means you’re not locked into one provider anymore. You could run a low-cost index fund ISA alongside an active trading ISA if you wanted. More on the rule changes in my ISA rules 2026 guide.

The best stocks and shares ISAs compared

1. Vanguard Investor

Platform fee: 0.15% (capped at £375/year) Fund fees: From 0.06% (e.g. FTSE Global All Cap) Minimum investment: £500 lump sum or £100/month Best for: Long-term, hands-off investors

Vanguard is the gold standard for passive investors. If your plan is to drip-feed money into a global index fund and leave it alone for 20 years, it’s hard to beat. The platform fee cap at £375 means it gets cheaper as your portfolio grows, and their own funds are some of the lowest cost in the world.

Pros: Rock-bottom fees, simple interface, excellent fund range Cons: Vanguard funds only (no individual shares, no third-party ETFs), limited flexibility

In my experience, Vanguard is the right choice for probably 70% of people reading this. If you just want to invest sensibly and cheaply, start here.

2. InvestEngine

Platform fee: 0% for DIY investing Fund fees: From 0.05% (ETFs only) Minimum investment: £100 Best for: Cost-conscious ETF investors

InvestEngine is the new kid that’s making waves. Zero platform fees for their DIY portfolio is genuinely remarkable. You’re limited to ETFs (no individual shares or funds), but for most passive investors that’s not a problem. They also offer a managed portfolio option if you want them to handle the allocation for you, which charges 0.25%.

Pros: Zero platform fee, fractional shares on ETFs, clean mobile app Cons: ETFs only, relatively new platform, no individual shares

If you’re investing smaller amounts and fees matter to you (they should), InvestEngine deserves serious consideration.

3. Trading 212

Platform fee: 0% Fund fees: Standard ETF charges apply Minimum investment: £1 Best for: Beginners and those wanting shares and ETFs together

Trading 212 offers commission-free trading on both shares and ETFs within their ISA. The £1 minimum and fractional shares make it incredibly accessible. They earn their money through forex spreads and interest on uninvested cash, so the core investing product is genuinely free.

Pros: No platform fee, no trading commissions, fractional shares, very low minimum Cons: Sometimes has a waiting list for new ISA accounts, the app can encourage over-trading, limited research tools

This is a solid option if you want to mix individual shares with ETFs and you’re comfortable with a mobile-first experience.

4. AJ Bell

Platform fee: 0.25% (capped at £42/year for shares; uncapped for funds) Fund fees: Varies by fund Minimum investment: £25/month or £500 lump sum Best for: Intermediate investors who want range and flexibility

AJ Bell sits in the middle ground between the budget platforms and the full-service brokers. You get access to funds, ETFs, investment trusts, and individual shares all in one place. Their platform fee is reasonable, and the cap on share dealing charges is welcome.

Pros: Broad investment range, good research and tools, reasonable fees, well-established Cons: Platform fee is uncapped for funds (expensive at larger balances), dealing charges on shares (£5 per trade online)

I’d point you towards AJ Bell if you’ve been investing for a while and want more options than Vanguard or InvestEngine offer, without paying Hargreaves Lansdown prices.

5. Hargreaves Lansdown

Platform fee: 0.45% (tiered, reduces above £250k) Fund fees: Varies by fund Minimum investment: £25/month or £100 lump sum Best for: Investors who value research, service, and hand-holding

Hargreaves Lansdown is the biggest investment platform in the UK, and they charge accordingly. Their platform fee of 0.45% is significantly higher than the competition. What you get for that is an excellent app, fantastic research, a massive fund range, and customer service that actually answers the phone.

Pros: Best research tools in the UK, huge fund selection, excellent customer service, Wealth Shortlist for fund ideas Cons: Expensive (the most expensive on this list), which really hurts at larger portfolio sizes

If you want your hand held and you value having everything in one place with great support, Hargreaves Lansdown delivers. But you are paying a premium for it. On a £100,000 portfolio, you’re paying £450 a year in platform fees alone. At Vanguard, that same portfolio costs you £150.

6. Freetrade

Platform fee: £0 (Basic), £5.99/month (Standard), £11.99/month (Plus) Fund fees: Standard ETF charges Minimum investment: £2 Best for: Younger investors who want individual shares

Freetrade offers a clean, modern app with commission-free trading. The free tier gives you a general investment account, but you need the Standard plan (£5.99/month) to access the stocks and shares ISA. The Plus plan unlocks more features including interest on uninvested cash and access to certain additional stocks.

Pros: Simple interface, commission-free trades, good range of UK and US shares Cons: ISA requires a monthly subscription, limited fund range compared to others, fewer research tools

Freetrade works well if you’re investing in individual shares and want a straightforward mobile experience. The monthly fee means it’s not ideal for very small portfolios though.

So which one should you pick?

Let me make this simple.

If you’re a passive investor putting money into index funds each month and leaving it alone: Vanguard or InvestEngine. Both are excellent. InvestEngine wins on cost, Vanguard wins on track record and simplicity.

If you want to pick individual shares alongside ETFs and you’re cost-conscious: Trading 212. Zero fees and fractional shares are hard to argue with.

If you want a bit of everything with solid tools and you don’t mind paying a bit more: AJ Bell. The best all-rounder on this list.

If you value service and research above all else and budget isn’t your main concern: Hargreaves Lansdown. You’re paying for the best user experience in UK investing.

If you’re brand new and investing small amounts to learn: Trading 212 or InvestEngine. The low minimums and zero fees mean you can experiment without being eaten alive by charges.

A few things to remember

Your ISA allowance for the 2026/27 tax year is £20,000. That’s across all ISA types combined. If you put £15,000 in a stocks and shares ISA, you’ve only got £5,000 left for a cash ISA or any other ISA type.

Since April 2024, you can open multiple ISAs of the same type in one tax year. So you could have a Vanguard stocks and shares ISA and an InvestEngine stocks and shares ISA running side by side. Just keep within the total £20,000 limit.

And finally, don’t let the perfect be the enemy of the good. The most important thing is that you start investing, not that you pick the absolute optimal platform. The difference between a 0.15% fee and a 0% fee matters far less than the difference between investing and not investing at all.

If you’re still unsure, open a Vanguard account, set up a £100 monthly direct debit into the FTSE Global All Cap Index Fund, and revisit in a year. You’ll thank yourself for starting.