Loan Payoff Calculator

The payoff date of a loan is set by the balance, the interest rate and the size of your payment — not by the term printed on the agreement, which only describes the minimum. This calculator takes a balance and a payment and tells you how many months remain, when you will be debt-free, how much interest lies ahead, and what an extra monthly amount would save.

The mechanism is simple but non-obvious. Each payment first covers the interest that accrued since the last one, and only the remainder reduces the balance. When the payment is barely above the interest charge, the balance shrinks very slowly and a large share of everything you pay is interest. Raising the payment by even a modest amount attacks the principal directly, which lowers every future interest charge, which shortens the loan again — a compounding effect in your favour.

That is why paying a little extra early is worth more than paying a lot extra late. A monthly amount added to a five-year loan in its first year saves far more interest than the same amount added in its fourth year, because the earlier payment removes principal that would otherwise have accrued interest for years. On a credit card balance near 20% APR the effect is dramatic; on a mortgage near 6% it is smaller relative to the balance but still meaningful over decades.

This tool assumes a fixed rate and a fixed payment with no new charges. It does not model variable-rate loans, promotional periods, or missed payments, and it does not account for any insurance or fee bundled into the payment. Use it to compare payoff strategies, then confirm the exact payoff date and any prepayment terms with your lender.

This calculator is an educational estimator. It is not financial, medical, tax, or legal advice, and it does not account for fees, local rules, or your personal circumstances. Confirm decisions with a qualified professional.