Compound Interest Calculator — Monthly Compounding
Monthly compounding credits interest twelve times a year, so each month's growth starts earning on the very next statement. Compounding more often lifts the effective annual yield (APY) above the stated nominal rate — a 7% nominal rate compounded monthly works out to roughly 7.23% APY. This page pre-fills twelve compounding periods per year so you can see how frequent crediting nudges the ending balance higher than a once-a-year credit would.
Compound interest growth estimate
Estimated future value
$145,180.47
- Starting principal
- $10,000
- Total contributions
- $58,000
- Total interest
- $87,180
Where the balance comes from
Total contributions$58,000.00
Interest earned$87,180.47
Future value$145,180.47
Estimate using a fixed annual rate. The principal compounds at the frequency you choose; contributions are grown month by month. Taxes, fees, and inflation are not modeled. An estimate of growth, not investment, tax, or financial advice.