Interactive Investor vs Trading 212 (2026) – Which ISA Platform Is Better?
Interactive Investor and Trading 212 serve very different investors — one is a full-service platform for experienced investors with larger portfolios, the other is a commission-free app built for beginners. This comparison covers fees, investment range, ease of use and who each platform is best suited for.
Interactive Investor vs Trading 212 — Side by Side
Below is a side-by-side comparison of Interactive Investor and Trading 212 across platform fees, investment range, ISA availability and overall suitability for UK investors.
| Feature | Interactive Investor | Trading 212 |
|---|---|---|
| Platform Fee | £11.99/month (flat) | 0% — completely free |
| Standard Share Trade | £3.99 per trade | 0% — free on all trades |
| Free Monthly Trade Credit | 1 included per month | N/A — all trades free |
| FX Fee | 1.5% | 0.15% |
| Minimum Deposit | £100 | £1 |
| ISA Available | ✓ Included in plan | ✓ Free — no extra charge |
| SIPP Available | ✓ Yes | ✗ No |
| UK Stocks | ✓ Yes | ✓ Yes |
| US Stocks | ✓ Yes | ✓ Yes |
| ETFs | ✓ Yes | ✓ Yes |
| Funds / OEICs | ✓ 3,000+ | ✗ Not available |
| Bonds | ✓ Yes | ✗ Not available |
| Fractional Shares | ✗ No | ✓ From £1 |
| Practice Account | ✗ No | ✓ £50,000 virtual |
| Research Tools | Comprehensive | Basic |
| AutoInvest | Regular Investing (£0.99/trade) | Free AutoInvest |
| FCA Regulated | ✓ Yes | ✓ Yes |
| FSCS Protected | ✓ Up to £85,000 | ✓ Up to £85,000 |
| Our Rating | 8.8 / 10 | 9.4 / 10 |
| Best For | Experienced investors, large portfolios | Beginners, small–mid portfolios |
Fees — A Clear Winner on Cost
On fees alone, Trading 212 wins comprehensively. There is no platform fee, no trading commission, and a minimal 0.15% FX fee on international trades. For investors of any portfolio size who primarily want to hold stocks and ETFs, Trading 212 is almost always cheaper.
Interactive Investor's £11.99/month (£143.88/year) flat fee usually only makes financial sense if you need access to the investment types it uniquely offers — funds, bonds, and investment trusts — or if you specifically want the research tools and deeper platform capabilities it provides.
Investment Range — Very Different
This is where the two platforms diverge most significantly. Trading 212 is limited to stocks and ETFs — it does not offer actively managed funds, bonds, gilts, or investment trusts. For many investors, particularly beginners building a simple index portfolio, this is more than sufficient.
Interactive Investor offers everything — over 3,000 funds, bonds, gilts, investment trusts, and direct shares across UK, US, and international markets. This breadth is essential for investors who want to hold a diversified mix of asset types, including fixed income, or who want access to specialist funds not available on simpler platforms.
Interactive Investor also includes a SIPP (pension account), which Trading 212 does not currently offer. For investors who want to manage both their ISA and pension in one place, Interactive Investor is the only choice between the two.
Ease of Use — Trading 212 Wins
Trading 212 was built mobile-first and its simplicity is one of its biggest strengths. The app is clean, intuitive, and guided — buying your first investment takes minutes. The Practice account with £50,000 of virtual money is a standout feature that lets complete beginners learn without risking real money.
Interactive Investor is a more complex platform by design. It is built for investors who want control, research tools, and access to a wider range of assets. The interface is functional and well-organised but has a steeper learning curve. It rewards investors who take the time to explore its capabilities.
Interactive Investor vs Trading 212 — Final Verdict
Which Platform Is Better?
Choose Trading 212 if: You are a beginner or intermediate investor who wants to build a portfolio of stocks and ETFs at zero cost. The 0% fees, £1 minimum deposit, and practice account with virtual money make it the best starting point for most UK investors. See our full Trading 212 review.
Choose Interactive Investor if: You need access to funds, bonds or a SIPP alongside your ISA — none of which Trading 212 offers. You have a portfolio above £57,000 where the flat fee becomes cost-competitive. You want comprehensive research tools and are comfortable with a more feature-rich platform. See our full Interactive Investor review.
Many investors use both — Trading 212 for a low-cost stocks and ETF ISA, and Interactive Investor for pension or fund-based investing.
Read our full reviews for detailed platform analysis, fees and affiliate links. Capital at risk.