LoanMath

Loan Calculator with Prepayment

Pay a lump and shorten the loan.

Your figures stay on your computer — no server, no tracking, no registration
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Try: Current balance=16000, APR=6, Months remaining=48, Prepayment=2000 → $16,000, $2,000, $14,000, 42, $505

How to use

A prepayment toward principal today cuts the balance immediately, shortening the term and saving interest. Enter the balance, rate, months left and the lump.

Formula

Reduce balance by lump, then re-amortize the same payment.

FAQ

Prepay vs invest?

If the loan rate beats your after-tax return, prepaying wins.

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