Effective Annual Rate
—
📈
Compound Interest Calculator — Final Amount & APY
See how a single deposit grows with compound interest. Pick how often the interest compounds — daily for crypto/stocks, monthly for HYSAs, quarterly for bonds.
$0.00
per year
Daily rate
—
Monthly rate
—
EAR always >= nominal rate. More frequent compounding means larger EAR.
EAR always >= nominal rate. More frequent compounding means larger EAR.
How compounding frequency matters
A 5% rate compounded daily yields 5.1267% APY; compounded monthly it is 5.116%; annually, 5.0%. The difference is small at low rates, but at 20% or higher, daily compounding can add 0.5-1% extra per year. For practical purposes, monthly is the right default for most savings accounts.
How this calculator works
EAR vs nominal rate
The nominal rate is the stated rate. EAR is the true annual rate after within-year compounding. Always compare EAR when evaluating any financial product — the nominal rate can be misleading.
📈
Compound Interest Calculator — Final Amount & APY
See how a single deposit grows with compound interest. Pick how often the interest compounds — daily for crypto/stocks, monthly for HYSAs, quarterly for bonds.
$0.00
per year
Effective Annual Rate
—
Daily rate
—
Monthly rate
—
EAR always >= nominal rate. More frequent compounding means larger EAR.
EAR always >= nominal rate. More frequent compounding means larger EAR.
How compounding frequency matters
A 5% rate compounded daily yields 5.1267% APY; compounded monthly it is 5.116%; annually, 5.0%. The difference is small at low rates, but at 20% or higher, daily compounding can add 0.5-1% extra per year. For practical purposes, monthly is the right default for most savings accounts.
How this calculator works
EAR vs nominal rate
The nominal rate is the stated rate. EAR is the true annual rate after within-year compounding. Always compare EAR when evaluating any financial product — the nominal rate can be misleading.