AER stands for Annual Equivalent Rate. It shows what the interest rate would be if interest were paid and compounded once each year.

How do I convert AER to gross interest?

Use Optimly's free AER to Gross Interest Calculator. Enter the AER and payment frequency to get the equivalent gross rate.

Is this calculator free to use?

Yes, the calculator is free to use and designed for UK savers to better understand their returns.

CALCULATOR FEEDBACK

Use our calculator to estimate how much interest you could earn, how your money could grow, and how fees or inflation might affect returns.

Rate details

Annual equivalent rate (AER)

Interest compounded every: