CompareStockISA

Interactive Investor Core vs Interactive Investor Premium

Side-by-side comparison from each platform's published fees.

Interactive Investor Stock ISA Core compared with Interactive Investor Stock ISA Premium

Interactive Investor

Stock ISA Core

Interactive Investor

Stock ISA Premium
Estimated yearly costexample investor£164.76£494.88
Fees
Platform fee
Whole portfolio
Flat fee: £71.88 per year (eligible ≤ £100,000)
Whole portfolio
Flat fee: £479.88 per year
Dealing
Shares and ETFs
£3.99 per trade
Mutual funds
£3.99 per trade
US shares and ETFs
£3.99 per trade
Shares and ETFs
£2.99 per trade, with a £29.90 trading credit each month
Mutual funds
£0 per trade
US shares and ETFs
£2.99 per trade
FX
Flat rate: 0.75%
Flat rate: 0.25%
How trades are placedQuote & DealQuote & Deal
What it can hold
UK investmentsSupportedSupported
US sharesSupportedSupported
Individual sharesSupportedSupported
Exchange-traded funds (ETFs)SupportedSupported
Mutual fundsSupportedSupported
Flexible ISANot supportedNot supported
Fractional tradingNot supportedNot supported
About the providers
Official websiteVisit Interactive Investor websiteVisit Interactive Investor website
Founded1987 (39 years old)1987 (39 years old)

Example investor: £80,000 portfolio, 12 trades a year, half in shares (half of them US) and half in UK ETFs. Estimate with your numbers

Important notice. The information shown on this page is sourced from provider websites and is for illustrative purposes only. It may be inaccurate, outdated, or not account for all scenarios, promotions, discounts, or variations in fees due to specific circumstances. Always check the provider's official website for the most up-to-date and accurate information. These figures are general estimates and should not be considered as financial advice. Data updated 8th October 2026.

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Use our illustrative calculator to estimate platform fees based on how you invest. Not financial advice.