Savings Interest Rate Comparison Calculator

Use our Savings Interest Rate Comparison Calculator to see which of two savings accounts leaves you with more — once each account’s rate, the way that rate is quoted and its fees are taken into account — or the rate the second account would need to keep up.

Enter what you start with, what you add each month and for how long; then each account’s rate and annual fee. With $10,000 to start and $250 added each month for 3 years, an account paying 4.50% APY ends with $21,015.30 and one paying 4.75% APY with $21,131.70 — $116.40 more.

A higher rate isn’t always better: add a $60 annual fee to the 4.75% account and it ends with $20,938.94, $76.36 behind. Switch to Rate B needs to see what it would take — 4.92% here. Rates can be entered as an APY or as an APR compounded monthly; the results show each account’s APY so you compare like with like.

The rates stay the same, fees are taken in twelve equal parts, nothing is withdrawn, and taxes aren’t included, so treat the results as an estimate. For one account with interest compounded daily or on another schedule, use our Compound Interest Calculator with Contributions; to turn an APR or APY into its monthly rate, our Annual Interest to Monthly Calculator.