Interactive Investor Stock ISA Core
Long-established platform, usually with a wide range of investments.
Published fee schedule
As used by the calculator. Data last updated 8th October 2026, from the official pages listed below.
Where these figures come from
How the cost changes with portfolio size
Estimated yearly cost for 12 trades a year of about £2,000, half shares, half UK ETFs, half of the shares in the US. With this platform the estimate stays the same as the portfolio grows.
| Portfolio | Platform fee | Dealing | FX | Total a year | Of portfolio |
|---|---|---|---|---|---|
| £10,000 | £71.88 | £47.88 | £45.00 | £164.76 | 1.65% |
| £25,000 | £71.88 | £47.88 | £45.00 | £164.76 | 0.66% |
| £50,000 | £71.88 | £47.88 | £45.00 | £164.76 | 0.33% |
| £100,000 | £71.88 | £47.88 | £45.00 | £164.76 | 0.16% |
| £250,000 | Only available up to £100,000 | ||||
| £500,000 | Only available up to £100,000 | ||||
If you hold funds
Estimated yearly cost for 12 trades a year of about £2,000, all funds. Fund fees can work differently from shares and ETFs. With this platform the estimate stays the same as the portfolio grows.
| Portfolio | Platform fee | Dealing | FX | Total a year | Of portfolio |
|---|---|---|---|---|---|
| £10,000 | £71.88 | £47.88 | £0.00 | £119.76 | 1.20% |
| £25,000 | £71.88 | £47.88 | £0.00 | £119.76 | 0.48% |
| £50,000 | £71.88 | £47.88 | £0.00 | £119.76 | 0.24% |
| £100,000 | £71.88 | £47.88 | £0.00 | £119.76 | 0.12% |
| £250,000 | Only available up to £100,000 | ||||
| £500,000 | Only available up to £100,000 | ||||
Estimates only, from published fees. Use the calculator for your own numbers.
Things to know
- Core plan: flat £71.88/year (£5.99/month), available only for portfolios up to £100,000. US shares cost the same £3.99 as UK shares; other overseas markets cost £9.99 a trade.
Questions about Interactive Investor
How much does Interactive Investor Stock ISA Core charge?
Platform fee: £71.88 per year (eligible ≤ £100,000). Share and ETF dealing: £3.99 per trade. Fund dealing: £3.99 per trade. These are taken from Interactive Investor's published charges and may change, so check with Interactive Investor before you decide.
Does Interactive Investor Stock ISA Core charge FX fees?
Yes, when you buy investments priced in another currency: 0.75%.
Can I buy US shares with Interactive Investor Stock ISA Core?
Yes. Interactive Investor Stock ISA Core lets you buy shares priced in dollars, so FX fees apply.
Can I hold funds in Interactive Investor Stock ISA Core?
Yes, Interactive Investor Stock ISA Core supports mutual funds.
Is Interactive Investor Stock ISA Core a flexible ISA?
No. Money you withdraw and pay back in counts towards your ISA allowance again.
Does Interactive Investor Stock ISA Core offer fractional shares?
No. You buy whole shares or ETF units.
How are trades placed on Interactive Investor Stock ISA Core?
Quote & Deal.
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