LoanMath

Loan Amortization Calculator

Full payment-by-payment breakdown.

Your figures stay on your computer — no server, no tracking, no registration
$
%
yr

Try: Loan amount=20000, APR=6.5, Term=5 → $20,000, $391, 60, $3,479, $23,479

How to use

Amortization shows the slow shift from interest-heavy to principal-heavy payments. The table previews the first year.

Formula

Each period: interest = balance × r, principal = PMT − interest.

FAQ

Why does the split change?

As the balance falls, the same interest rate grabs a smaller dollar amount.

Related calculators