Loan Payoff Calculator
See how extra monthly payments shorten your loan and cut total interest.
Paying extra each month goes straight to principal, which shrinks the balance interest is charged on and pulls your payoff date forward. On a $25,000 loan at 7.5% over 5 years, adding $100 a month clears it roughly 11 months early and saves over $900 in interest. Enter your loan and an extra amount to see the new payoff date and savings.
These results are estimates for informational purposes only and are not financial, tax, or legal advice. Your actual figures from a lender or the IRS may differ. Consult a qualified professional before making decisions.
Estimated monthly payment
$500.95
Principal vs. interest paid per year
Amortization schedule
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $5,524 | $1,688 | $19,476 |
| 2 | $5,953 | $1,259 | $13,524 |
| 3 | $6,415 | $797 | $7,109 |
| 4 | $6,913 | $299 | $197 |
| 5 | $197 | $1 | $0 |
About the Loan Payoff Calculator
When you pay more than your scheduled payment, the extra is applied to principal, not interest. That lowers the balance the lender charges interest against, so every future month costs a little less and the loan ends sooner. This calculator shows the effect directly: set your balance, rate, and term, then add a monthly extra amount and watch the payoff date move up and the interest saved appear. The timing of extra payments matters. Because interest is front-loaded, dollars added early in the loan, when the balance is largest, remove more interest than the same dollars added near the end. That is why even a modest extra in the first year often beats a larger one later. Two cautions before you commit. Confirm your lender has no prepayment penalty, which is rare on consumer loans but worth checking, and tell the servicer to apply extra amounts to principal rather than holding them toward the next payment. If a loan's rate is low, compare paying it down against saving or investing the same money.
Frequently asked questions
How do extra payments pay off a loan faster?+
Extra money is applied to principal, which reduces the balance that interest is calculated on. With less interest accruing, more of each regular payment goes to principal too, so the balance falls faster and the loan ends ahead of schedule.
When is the best time to make extra payments?+
As early as possible. Interest is charged on the balance, which is largest at the start, so extra payments in the first years remove the most interest. The same amount paid near the end saves comparatively little.
Will I be penalized for paying off a loan early?+
Most consumer loans have no prepayment penalty, but some mortgages and older loans do. Check your loan agreement before making large extra payments, and confirm the lender applies them to principal rather than to upcoming payments.
Should I pay off a low-interest loan early?+
Not always. If the loan's rate is lower than what you could earn by investing or saving, the money may work harder elsewhere. For high-rate debt, paying early is almost always the better guaranteed return.