Interactive Investor Stocks & Shares ISA Review (Sep 2026)

Protection

FSCS

Up to £85,000

Min investment

£0

Max investment

£20,000

Access

Instant

Transfers in

Accepted

Capital at Risk - Stocks & Shares ISAs are investment products, not savings accounts. The value of your investment can go down as well as up and you may get back less than you invest.

Bonus Terms

Gift a Stocks and Shares ISA to a family member with no monthly account fee on balances up to £50,000. Terms apply.

Who Is This For

Learn more about Interactive Investor

Those wanting easy access
Savers happy with a £20,000 cap

Additional Info

Interactive Investor uses a flat monthly fee model - significantly cheaper than percentage-fee platforms for larger portfolios. Best suited to investors with £25,000+ who want access to a wide range of funds, shares, and investment trusts.

Available Investments

3000+ Stocks & ETFs

Please verify all details with the provider – for more info read our Disclaimer

Penny's Take

Interactive Investor's flat monthly fee (from £5.99 on the Core plan) is the key difference here — unlike percentage-based platforms, your platform cost doesn't grow as your portfolio does. That makes it genuinely competitive for investors with £25,000 or more, where a percentage fee would cost significantly more than the flat rate. Below that level, the monthly charge can feel heavy relative to alternatives, so it's worth checking the numbers against your portfolio size before committing.

Our Expert Opinion on Interactive Investor Stocks & Shares ISA

Interactive Investor suits investors who already have a decent-sized portfolio, as the flat monthly fee structure starts at £5.99 per month on the Core plan and only becomes genuinely cost-effective around £25,000 or more, where it undercuts the percentage-based platforms. You get access to over 3,000 stocks and ETFs, and share trades cost £3.99 on the Core plan, though regular monthly investing is free on all plans. The current promotion lets you gift a Stocks and Shares ISA to a family member with no monthly fee on balances up to £50,000, which is worth noting if that applies to you. The annual ISA allowance cap of £20,000 is standard, and the FX fee of 0.75% on the Core plan is something to factor in if you trade international securities regularly.