LoanMath

Student Loan Amortization Calculator

Year-by-year breakdown of a student loan.

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

Try: Loan amount=25000, APR=4.5, Term=10 → $25,000, $259, 120, $6,092, $31,092

How to use

See how each payment splits between interest and principal. The first-year table is shown; the full schedule follows the same rule.

Formula

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

FAQ

Interest capitalizes?

Unsubsidized loans accrue interest in school; this assumes repayment has started.

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