Best Stocks & Shares ISAs in 2025 – Top Platforms Compared

With tax-free investment options such as Stocks and Shares ISA, investing your money is made simple and more beneficial to you in the UK. Basic paying UK citizens can enjoy a £20,000 a year allowance, and putting the correct platform towards it can easily lower fees, help provide more investment options, and improve returns.

Why a Stocks & Shares ISA?

Before explaining the platforms, let us highlight some of the most powerful features that come with this ISA:

• ✅ None of the capital gains or dividend taxes
• ✅ 20k allowance, that can be capitalized on before April 5th annually
• ✅ Multiple investment options available such as ETFs and shares
• ✅ Earning returns by reinvesting dividends

How We Picked the Best Stocks & Shares ISA?

Our approach to analyzing the top Stocks & Shares ISA included:

• ✔ User reviews and their overall experience with the provider
• ✔ Variety of investment options: shares, funds, and ETFs
• ✔ Overall feature accessibility such as mobile usage and research tools
• ✔ Trading fees and platform maintenance costs

These criteria will help you select the best-suited one so let’s go over the top providers now.

Best Stocks & Shares ISAs for 2025 (Ranked)

🥇 Best Overall: Interactive Investor (£4.99/month)

• Fees: Flat £4.99/month (includes 1 free trade/month)
• Best for: Active investors, large portfolios
• Pros: No % fees, advanced tools, SIPP included
• Cons: Expensive for small portfolios

🥈 Best for Beginners: Trading 212 (Free Trading)

• Fees: £0 commissions, no platform fee
• Best for: Fractional shares, easy mobile investing
• Pros: Free share bonus, no minimum deposit
• Cons: Limited fund selection

🥉 Best for Passive Investors: Vanguard (0.15% Fee)

• Fees: 0.15% platform fee (capped at £375/year)
• Best for: Index funds (e.g., FTSE Global All Cap)
• Pros: Ultra-low-cost, auto-investing
• Cons: Only Vanguard funds

Full Comparison of All 12 ISA Providers

How to Choose the Best Stocks & Shares ISA for You?

• Best for Beginners is Moneybox (‘round’ the funds) and Trading 212 (no fees).
• The best for Passive Investors is Vanguard (funds with a low cost).
• The best for Active traders is Interactive Investor (flat fee structure).
• Best for Large Portfolios is iWeb (£100 one-time payment).

Common Mistakes You Should Care

• Do not choose high-fee platforms (0.75% of fees are diminishing returns).
• Forget about the £20k cut-off (April 5th is the deadline).
• Lack of diversification (only if new to investing, stick to ETFs/funds).

Pro Tip: Open the ISA before April 5th to claim this year’s allowance, and thank me later.

For a detailed breakdown of this year’s top investment platforms, read our Cash ISAs Overview and The Best Accounts and Rates and Lifetime ISA (LISA): Buy Your First Home or for Retirement– we analyze fees, investment options, and exclusive features to help you choose the perfect tax-efficient account for your portfolio.