Interactive Investor Stock ISA Premium
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 | £479.88 | £0.00 | £15.00 | £494.88 | 4.95% |
| £25,000 | £479.88 | £0.00 | £15.00 | £494.88 | 1.98% |
| £50,000 | £479.88 | £0.00 | £15.00 | £494.88 | 0.99% |
| £100,000 | £479.88 | £0.00 | £15.00 | £494.88 | 0.49% |
| £250,000 | £479.88 | £0.00 | £15.00 | £494.88 | 0.20% |
| £500,000 | £479.88 | £0.00 | £15.00 | £494.88 | 0.10% |
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 | £479.88 | £0.00 | £0.00 | £479.88 | 4.80% |
| £25,000 | £479.88 | £0.00 | £0.00 | £479.88 | 1.92% |
| £50,000 | £479.88 | £0.00 | £0.00 | £479.88 | 0.96% |
| £100,000 | £479.88 | £0.00 | £0.00 | £479.88 | 0.48% |
| £250,000 | £479.88 | £0.00 | £0.00 | £479.88 | 0.19% |
| £500,000 | £479.88 | £0.00 | £0.00 | £479.88 | 0.10% |
Estimates only, from published fees. Use the calculator for your own numbers.
Things to know
- US shares cost the same as UK shares; other overseas markets cost £7.99 a trade on Plus and £5.99 on Premium. The monthly trading credit (£3.99 on Plus, £29.90 on Premium) pays for any type of trade and doesn't roll over. On Plus, FX is 0.75% on the first £50,000 of a trade and 0.25% above that; ii gives no worked example, so we treat these as bands, like other platforms that do.
Questions about Interactive Investor
How much does Interactive Investor Stock ISA Premium charge?
Platform fee: £479.88 per year. Share and ETF dealing: £2.99 per trade, with a £29.90 trading credit each month. Fund dealing: £0 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 Premium charge FX fees?
Yes, when you buy investments priced in another currency: 0.25%.
Can I buy US shares with Interactive Investor Stock ISA Premium?
Yes. Interactive Investor Stock ISA Premium lets you buy shares priced in dollars, so FX fees apply.
Can I hold funds in Interactive Investor Stock ISA Premium?
Yes, Interactive Investor Stock ISA Premium supports mutual funds.
Is Interactive Investor Stock ISA Premium a flexible ISA?
No. Money you withdraw and pay back in counts towards your ISA allowance again.
Does Interactive Investor Stock ISA Premium offer fractional shares?
No. You buy whole shares or ETF units.
How are trades placed on Interactive Investor Stock ISA Premium?
Quote & Deal.
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