When you get into the habit of putting a little money away each month, the pounds soon add up. Use our calculator to get an idea of how much you could save.

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What could you save?

All you need to know is how much you can add to the pot each month and the rate of the account. You can see some of our interest rates here if you’re not sure.

Interest earned after 12 months

Total savings after 12 months

Keep in mind… 

These figures are only a guide, not a precise calculation and they’re subject to change. To get the answer you see here we’ve assumed it’s a fixed, tax-free interest rate; months of equal length; and that you make the same deposit every month, at the same time as cleared funds. The calculator also rounds up to the nearest 0.1%, which means it sometimes underestimates the amount of interest paid. And don’t forget, AER stands for Annual Equivalent Rate. It represents what the interest rate would be if the interest is reinvested in the account every year. 


The figures provided by the calculator are a guide only and are not a precise calculation.

Interest rates

The calculator assumes the interest rate does not change throughout the calculation. The calculation assumes we pay your interest without tax taken off.

Length of month

Months are of equal length.

Deposit frequencies

The calculator assumes the same deposit is made every month, at the same time as cleared funds.


The calculator rounds to the nearest 0.1%, in some cases the calculator may underestimate interest paid.


Stands for Annual Equivalent Rate. It shows what the interest rate would be if the interest was reinvested in the account each year.