How to Pay Off a Loan Faster (And Save on Interest)

How a loan balance shrinks

Each month, interest is added to your balance and your payment is subtracted. The interest part is your balance times the monthly rate (the annual rate divided by 12). Whatever is left of your payment after that interest reduces the balance itself.

Early in a loan, most of the payment goes to interest. As the balance falls, the interest charge falls too, so more of each payment attacks the balance — which is why payoff speeds up near the end.

The one rule: beat the monthly interest

If your payment is smaller than the monthly interest charge, your balance grows instead of shrinking and the loan never ends. A 10,000 balance at 12% a year accrues 100 of interest each month — a 90 payment means you fall further behind forever.

The calculator warns you when this happens and shows the minimum you must beat.

Worked example

A 10,000 balance at 8% with a 250 monthly payment: the monthly rate is about 0.667%, so the first month's interest is about 66.67 and roughly 183 reduces the balance. The loan clears in 47 months — 3 years and 11 months — with total interest of roughly 1,750.

Raise the payment to 300 and the same loan clears in 38 months with roughly 1,400 of interest. Fifty extra a month saved nine months and about 350.

Ways to pay off faster

Four levers, in rough order of impact:

• Pay a fixed amount above the minimum every month — even small extras compound
• Make one extra payment a year, for example from a bonus or tax refund
• Refinance to a lower rate if your credit has improved, keeping the same payment
• Avoid new charges on the account while you pay it down

Before you commit

Check your loan agreement for early repayment penalties — some lenders charge a fee for paying off ahead of schedule. Keep an emergency cushion rather than sending every spare unit of currency to the loan. And confirm the exact figures with your lender: this guide and the calculator assume a fixed rate and equal monthly payments, and real loans can include fees or rate changes.