ISA Costcustody plus dealing, not the headline rate

Fidelity UK: what the ISA actually costs

Fidelity UK is not the cheapest at any pot size on this site. That is not a verdict on the platform — only on its published charges against the others', at 12 trades a year.

Shares and etfs

PotA year% of potRank
£1,000£180.0018.00%12 of 12
£2,000£180.009.00%12 of 12
£5,000£180.003.60%12 of 12
£10,000£180.001.80%12 of 12
£20,000£180.000.90%12 of 12
£30,000£180.000.60%11 of 12
£50,000£180.000.36%11 of 12
£75,000£180.000.24%11 of 12
£100,000£180.000.18%11 of 12
£150,000£180.000.12%10 of 12
£200,000£180.000.09%10 of 12
£250,000£180.000.07%10 of 12
£500,000£180.000.04%10 of 12

Funds

PotA year% of potRank
£1,000£90.009.00%7 of 9
£2,000£90.004.50%7 of 9
£5,000£90.001.80%7 of 9
£10,000£90.000.90%7 of 9
£20,000£90.000.45%6 of 9
£30,000£105.000.35%6 of 9
£50,000£175.000.35%8 of 9
£75,000£262.500.35%8 of 9
£100,000£350.000.35%8 of 9
£150,000£525.000.35%8 of 9
£200,000£700.000.35%8 of 9
£250,000£875.000.35%8 of 9
£500,000£1,000.000.20%7 of 7

Below £25,000 the charge is £7.50 a month unless you pay in by regular savings plan, in which case it is 0.35%. The table shows the £7.50-a-month figure, which is what applies without one.

Every figure assumes 12 trades a year of £1,000 each, inside a stocks and shares ISA. It excludes Stamp duty at 0.5% on UK share purchases, the £1 PTM levy on orders over £10,000, fund manager charges (the OCF), and any foreign-exchange fee — every one of those is charged by someone other than the platform and is the same wherever you hold the money.

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What Fidelity UK publishes, word for word

Platform feeUnder £25,000: 0.35% with a regular savings plan, otherwise £7.50/month. £25,000-£250,000: 0.35%. £250,000+: 0.20%, capped at £2,000. Shares and ETFs capped at £7.50/month
Uk share dealing£7.50 per online share deal, £1.50 within a regular savings plan
Fund dealing£0
Fx fee0.75% up to £10,000, 0.50% to £20,000, 0.25% above

Where this platform wins

Charges read 18 August 2026 from Fidelity UK's own pricing page. The £90-a-year flat fee on sub-£25,000 accounts is waived down to 0.35% if you set up a regular savings plan — worth doing purely for the fee change.

Charges read 19 August 2026 from each platform's own pricing page. Platforms reprice with little notice, and nothing here is advice — it is arithmetic on published charges.