APY Calculator
Estimates annual percentage yield from a nominal annual rate and compounding frequency. Enter a nominal annual rate percent (5 means 5% per year) and how often interest compounds. The formula is APY = (1 + r/n)^n − 1. Results are estimates, not a bank offer or investment advice.
APY calculator
This is not a bank offer. APY uses the standard compounding formula APY = (1 + r/n)^n − 1.
Results are estimates only, not financial, tax, or investment advice. Tallymill is not a bank and does not recommend products or accounts.
How to use
- Enter a nominal annual rate percent (APR) and choose how often interest compounds.
- Read the annual percentage yield (APY).
- Percents are shown to two decimals, half-up. Math uses full precision.
Results
Enter a nominal annual rate percent and compounding frequency to see APY.
Runs in your browser. Nothing is uploaded.
Frequently asked questions
How does this APY calculator work?
Enter a nominal annual rate percent and a compounding frequency. The formula is APY = (1 + r/n)^n − 1. The page shows annual percentage yield. Math runs in your browser. Nothing is stored.
What is APY?
APY is annual percentage yield. It is the effective yearly rate after compounding. Enter a nominal annual rate and a compounding frequency. This APY calculator shows the result as a percent. Math runs in your browser. Nothing is stored.
What formula does this APY calculator use?
APY = (1 + r/n)^n − 1. Here r is the nominal annual rate as a decimal (5 means r = 0.05) and n is compounding periods per year. The page keeps full precision inside and shows APY to two decimal places, half-up.
Which compounding frequencies can I choose?
Annually (n = 1), semiannually (n = 2), quarterly (n = 4), monthly (n = 12), and daily (n = 365). This page uses discrete compounding only. It does not use continuous compounding.
What is the difference between APR and APY on this page?
APR here is the nominal annual rate you type in. APY is the effective yield after compounding. A 5% nominal rate compounded monthly is not the same as 5% APY. This page does not look up live bank rates.
Is this financial, tax, or investment advice?
No. Results are estimates only. This is not financial advice, tax advice, or investment advice. Tallymill is not a bank and does not recommend products or accounts. Confirm figures with your records or a qualified professional.
Do I need an account? Do you store the numbers I enter?
No. The math runs in your browser. There is no signup, and Tallymill does not save your rate or compounding frequency. Refreshing the page clears the form. This calculator does not fetch live rates.