Compound Interest
Calculator

See how your investments could grow over time — and how much fees really cost you in the long run.

Starting amount (£)

Monthly contribution (£)

Annual growth rate (%) 7% is a common long-term average

Broker (optional) Select a broker to auto-fill their platform fee

Platform fee (%) Use our comparison tool to find yours

Fixed annual platform fee (£) This broker charges a fixed fee, not a percentage

Fund OCF (%) Ongoing charges figure of your funds

Time period

1 40 20 years

Show in today's money (adjust for inflation)

Final portfolio value
£0
after fees

Total contributions

£0

Investment growth

£0

after fees deducted

Total fees paid

£0

platform + fund OCF

Fee drag (lost growth)

£0

vs £0 without fees

Contributions Growth

Compound InterestCalculator