Savings interest calculator
See what each savings option costs for your own numbers. Prices, products and protections differ by country, so each market has its own calculator in its own currency.
Pick your edition
Each one uses that market’s published prices and opens at our reference profile, which you can change.
How it works
The calculator uses only figures each provider publishes. Where a fee is not published, the row says so and the figure leaves it out, which is why such a row ranks after every fully priced one. Introductory discounts are ignored because they end; tax is excluded because it depends on you.
The same code ranks the lists in our savings accounts comparisons, using the defaults shown, so the order on those pages is the order this calculator gives for that profile. See how we rank.
APY, AER and APR: how interest rates are quoted in the US and UK
What APY, AER, gross rate and APR mean, how compounding, fees and tax change them, and how to compare rates on the same basis.
UK comparisonBest easy-access savings accounts in the UK: rates read 29 October 2026
Eight UK savings accounts compared on the AER each provider published, how much of it is a first-year bonus, and the limits on withdrawals.
US comparisonBest high-yield savings accounts in the US: rates read 29 October 2026
Online savings accounts compared on the APY each bank published, the balance needed to earn it, and the date each rate was set.