Deposit Interest Calculator
Project savings growth with compounding and see inflation-adjusted real value.
About this calculator
What is deposit interest?
Deposit interest is the return earned on money held in a savings account, certificate of deposit (CD), or similar deposit product. Banks may compound interest daily, monthly, or annually.
The nominal future value shows account balance before inflation. The real value adjusts for purchasing power using your inflation assumption.
FV = P × (1 + r/n)^(n×t)
Nominal vs real value
If inflation is 3% and your deposit earns 4%, your real return is positive but smaller than 4%. Use the real value to compare whether your savings are growing in actual purchasing power.
Reference tables & standards
Federal Reserve — savings and interest context
Source: U.S. Federal Reserve / FDIC consumer guidance| Concept | Meaning |
|---|---|
| APY | Annual Percentage Yield — includes compounding effect |
| APR | Annual Percentage Rate — stated yearly rate |
| Inflation (CPI) | Rise in general price level; erodes purchasing power |
| Real return | Nominal return adjusted for inflation |
Calculations are for educational and planning purposes only. They are not financial, tax, or investment advice. Rates, fees, and inflation assumptions vary in real markets.