CMC Invest Stock ISA Plus
App-based platform launched in the last decade or so.
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 | £83.88 | £0.00 | £30.00 | £113.88 | 1.14% |
| £25,000 | £83.88 | £0.00 | £30.00 | £113.88 | 0.46% |
| £50,000 | £83.88 | £0.00 | £30.00 | £113.88 | 0.23% |
| £100,000 | £83.88 | £0.00 | £30.00 | £113.88 | 0.11% |
| £250,000 | £83.88 | £0.00 | £30.00 | £113.88 | 0.05% |
| £500,000 | £83.88 | £0.00 | £30.00 | £113.88 | 0.02% |
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 | £83.88 | £0.00 | £0.00 | £83.88 | 0.84% |
| £25,000 | £83.88 | £0.00 | £0.00 | £83.88 | 0.34% |
| £50,000 | £83.88 | £0.00 | £0.00 | £83.88 | 0.17% |
| £100,000 | £83.88 | £0.00 | £0.00 | £83.88 | 0.08% |
| £250,000 | £83.88 | £0.00 | £0.00 | £83.88 | 0.03% |
| £500,000 | £83.88 | £0.00 | £0.00 | £83.88 | 0.02% |
Estimates only, from published fees. Use the calculator for your own numbers.
Questions about CMC Invest
How much does CMC Invest Stock ISA Plus charge?
Platform fee: £83.88 per year. Share and ETF dealing: £0 per trade. Fund dealing: £0 per trade. These are taken from CMC Invest's published charges and may change, so check with CMC Invest before you decide.
Does CMC Invest Stock ISA Plus charge FX fees?
Yes, when you buy investments priced in another currency: 0.50%.
Can I buy US shares with CMC Invest Stock ISA Plus?
Yes. CMC Invest Stock ISA Plus lets you buy shares priced in dollars, so FX fees apply.
Can I hold funds in CMC Invest Stock ISA Plus?
Yes, CMC Invest Stock ISA Plus supports mutual funds.
Is CMC Invest Stock ISA Plus a flexible ISA?
Yes. You can withdraw money and pay it back in within the same tax year without it counting towards your allowance again.
Does CMC Invest Stock ISA Plus offer fractional shares?
Yes. You can buy part of a share or ETF.
How are trades placed on CMC Invest Stock ISA Plus?
Market Order.
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