LoanMath

Amortization Schedule Extra Principal

One lump toward principal.

Your figures stay on your computer — no server, no tracking, no registration
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Try: Current balance=20000, APR=6.5, Months remaining=60, Lump prepay=2000 → $20,000, $2,000, $18,000, 54, $721

How to use

A single extra principal payment today reduces the balance immediately, shortening the term and cutting interest. This shows the new timeline.

Formula

Reduce balance by the lump, then re-amortize.

FAQ

Lump vs monthly extra?

A lump now saves more interest than the same amount spread later.

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