How Extra Loan Payments Save You Thousands in Interest

One of the highest-return moves in personal finance is paying a bit extra on a loan each month. Because that money attacks the principal directly, the interest savings can be enormous. Here's why, with numbers.

Why extra payments are so powerful

Your regular payment covers that month's interest plus a little principal. Any extra goes entirely to principal. A smaller balance means less interest charged next month — which means more of every future payment goes to principal too. It compounds in your favor.

A worked example

Take a $250,000 mortgage at 6.5% over 30 years:

• Standard payment: ~$1,580/month. Total interest over 30 years: ~$319,000.
• Add just $200/month: you pay it off in about 22 years instead of 30, and save roughly $98,000 in interest.

A $200 monthly extra — $2,400 a year — turns into nearly $100k saved and 8 years of freedom. That's the power of attacking principal early.

Ways to pay extra

• Fixed monthly extra — simplest; add a set amount to every payment.
• Round up — pay $1,600 instead of $1,580.
• Biweekly payments — paying half every two weeks yields 13 monthly payments a year.
• Lump sums — apply bonuses or tax refunds directly to principal.

Before you do it

• Check for prepayment penalties — rare today, but confirm with your lender.
• Earmark it for principal — tell your lender the extra is a principal reduction, not next month's payment.
• Compare to other goals — if you have higher-interest debt or no emergency fund, address those first.

Model it yourself

Our loan calculator has an "extra monthly payment" field that instantly shows your new payoff date and exactly how much interest you'd save. Try a few amounts and watch the numbers move.

FAQ