Savings & Compound Interest Calculator

See how your savings grow over time with regular deposits and compound interest.

Starting amount (£)

Monthly deposit (£)

Interest rate (% AER)

Number of years

Assumes interest is compounded monthly and the rate stays the same throughout. Real savings rates change over time. Interest may be taxable depending on your Personal Savings Allowance and whether the account is an ISA.

The power of compound interest

Compound interest means you earn interest not just on your original savings, but also on the interest you've already earned. The longer you leave your money invested and the more regularly you top it up, the more dramatic the effect becomes — which is why starting early makes such a difference.