Car Loan Payoff Calculator — Pay It Off Early

Paying a little extra each month can knock months off a car loan and save real interest. Enter your current balance, APR, monthly payment, and the extra you’d add.

How this calculator works

We run your loan twice — once at your normal payment, once with the extra added — and compare. Because every extra dollar goes straight to principal, it stops accruing interest for the rest of the loan, so a small monthly addition compounds into a surprisingly large saving.

What changes the number

Extra payments help most early in the loan, when the balance (and the interest on it) is largest.
Confirm your lender applies extra payments to principal, not to “paying ahead” on future installments.
If your loan has a prepayment penalty (rare on car loans, but check), factor that against the interest saved.

Frequently asked questions

Is it worth paying my car loan off early?

If the interest saved beats what that money would earn elsewhere and there’s no prepayment penalty, yes. Low-APR loans matter less; high-APR loans are worth attacking.

Does the extra payment lower my monthly bill?

No — your required payment stays the same. The extra shortens the loan and cuts total interest instead of reducing the monthly amount.

Should I round up or pay a lump sum?

Both work. A consistent monthly extra is easy to automate; a lump sum (like a tax refund) early in the loan saves the most interest.