Deposit interest calculator
Estimate returns with your own tax rate
How it works
Estimate deposit interest with simple or monthly compound interest. Choose your interest tax rate. The international default is 0%; set the rate that applies to your account.
Example
10,000 at 3% simple interest for 12 months earns 300 before tax.
How to use
- Enter your values or choose a local file.
- Choose settings and run the tool.
- Review the result, then copy it or download the file.
Common questions
What rules does this tool use?
Estimate deposit interest with simple or monthly compound interest. Choose your interest tax rate. The international default is 0%; set the rate that applies to your account.
Are my inputs uploaded?
Calculations, texts and files are processed in this browser. The currency tool requests only currency codes from our server.
Free tool · Inputs processed locally · Updated October 5, 2026