Biweekly Mortgage Calculator
See how paying half your mortgage payment every two weeks — 13 full payments a year instead of 12 — shortens your loan and cuts interest.
Why biweekly payments pay off a mortgage faster
There are 52 weeks in a year, so paying half your monthly payment every two weeks adds up to 26 half-payments — the same as 13 full monthly payments instead of 12. That extra payment each year goes straight to principal, which reduces the interest charged in every following month and snowballs into years of savings.
How this calculator models it
Most mortgage servicers charge interest monthly and apply the extra money as it accumulates, so this calculator treats biweekly payments as your regular monthly payment plus one-twelfth of a payment toward principal each month. Exact savings vary slightly depending on how your servicer credits payments.
Do it yourself — skip the fees
Some third-party "biweekly programs" charge setup or per-payment fees for something you can do for free. You get essentially the same result by adding 1/12 of your payment to each monthly payment, or by making one extra payment a year. Check with your servicer that extra money is applied to principal. To test other extra-payment amounts, try the loan payoff calculator.
Frequently asked questions
How much faster will I pay off a 30-year mortgage with biweekly payments?
Typically around four to six years faster, depending on your interest rate — higher rates produce bigger savings. Enter your loan above to see your exact numbers.
Is a biweekly payment plan worth it?
The extra principal is worth it if you can afford it and don't have higher-interest debt to pay first. Avoid paying a fee for a program that does what you can do yourself.
Can I switch to biweekly payments on my existing mortgage?
Many servicers allow it, and you can always get the same effect by adding extra principal to your monthly payment. Ask your servicer how extra payments are applied.
Does paying biweekly lower my monthly payment?
No. Your required payment stays the same — you're simply paying more per year, which shortens the loan.