Savings interest calculator
Set your own numbers and see what each savings option costs in dollars, from prices read on each provider’s own page.
- CIT Bank Platinum Savings 3.75%$375.00
- Ally Online Savings 3.20%$320.00
- Capital One 360 Performance Savings—Rate not published on the page read
Regular published prices only. Introductory offers and tax are left out. Figures are arithmetic on the provider’s own numbers, not a recommendation.
US prices read 29 October 2026. Default: $10,000 left untouched for 12 months at the published APY.
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.
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.