Best Stocks and Shares ISAs in 2026: Compared

When I opened my first stocks and shares ISA, I went with Hargreaves Lansdown. Everyone recommended them. The app was nice. The research tools were impressive. And for two years, I didn’t think twice about it.

Then I actually calculated what I was paying in fees. On a £30,000 portfolio, I was handing over £135 a year in platform fees alone, before fund costs. That same portfolio at Vanguard would have cost me £45. Over a decade, the difference compounds to thousands. I moved my ISA within a week.

That experience taught me something. The platform you choose matters far more than most people realise. So here’s my honest breakdown of the best stocks and shares ISAs for the 2026/27 tax year, including the one I actually use.

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

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 decent car.

I learned this the hard way, as I mentioned. 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 (my pick)

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

This is what I use. This is where the majority of my ISA portfolio sits. I’ll be upfront about that.

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 actually gets cheaper as a percentage as your portfolio grows. Their own funds are some of the lowest cost in the world.

The app isn’t flashy. The interface is functional rather than beautiful. I don’t care. I’m not logging in every day to admire the design. I’m logging in twice a year to check everything’s ticking along, and it always is.

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

For probably 70% of people reading this, Vanguard is the right answer.

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 one that genuinely impressed me when I looked into it. Zero platform fees for their DIY portfolio is remarkable. You’re limited to ETFs (no individual shares or traditional 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 (and they should), InvestEngine deserves serious consideration. If I were starting from scratch today with a small portfolio, I might actually choose them over Vanguard. The zero fee is that compelling.

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

A solid option if you want to mix individual shares with ETFs. My one concern is that the app’s design nudges you towards frequent trading, which is the opposite of what most people should be doing. If you can resist that temptation, it’s a strong platform.

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

Yes, this is the one I left. And I want to be fair: Hargreaves Lansdown is the biggest investment platform in the UK for a reason. Their app is excellent. Their research tools are the best in the business. Their customer service actually answers the phone, which in 2026 feels almost miraculous.

But that platform fee of 0.45% is significantly higher than everything else on this list. On a £100,000 portfolio, you’re paying £450 a year in platform fees alone. At Vanguard, that same portfolio costs you £150. That £300 difference, compounded over 20 years, is a staggering amount of money.

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

If you genuinely value the hand-holding and you’ll use the research tools to make better decisions, maybe. But be honest with yourself. Most people don’t use those tools. They just pay for them.

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. At £5.99 a month, you’re paying £71.88 a year just for the ISA wrapper. On a £5,000 portfolio, that’s effectively a 1.4% platform fee. Painful.

So which one should you pick?

I’ll 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. I chose Vanguard and I’ve never regretted it.

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. Just go in with your eyes open about the cost.

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. Sound familiar? It should, because I spent three weeks agonising over platforms when I should have just picked one and started.

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. That’s exactly what I did, and it changed everything.