Savings Interest Calculator
See how your savings could grow over time with compound interest and optional monthly contributions.
Optional
Assumes interest compounds monthly at a fixed rate for the whole period. Real savings rates change over time.
Projected savings
Balance after 10 years
£22,228
Yearly projection
How compound interest is calculated
This calculator compounds interest monthly: each month, any contribution is added to your balance, then interest is calculated on the new total. Over time, you earn interest on your interest as well as your original balance, which is why savings can grow faster than simple interest would suggest.
This is a projection based on a fixed interest rate for the whole period. Real savings and ISA rates can change, and some accounts have limits on how much you can pay in each year.