Biweekly Mortgage Payment Calculator

See how paying half your mortgage every two weeks shortens the loan and cuts interest, compared with monthly payments.

$
Fractions and decimals both work.
Every Two Weeks
Monthly payment
Monthly plan
Biweekly plan
Interest saved
Time saved
Monthly + 1/12 extra
Extra Paid per Year

Compare Loans

Items you add are saved in this browser.

LoanBiweeklyYearsInterest SavedRemove

How Biweekly Mortgage Payments Work

Paying half your monthly payment every two weeks adds up to 26 half-payments a year: the same as 13 monthly payments instead of 12. That extra payment each year goes to principal and shortens the loan.

Biweekly payment = monthly payment ÷ 2, paid 26 times a year
Interest per period = balance × annual rate ÷ 26

Some lenders and payment services collect every two weeks but only apply the money once a month. That works out almost the same as adding 1/12 of a payment to each monthly payment, which the page also shows.

Worked Example

Tips

Watch for third-party biweekly programs that charge setup or per-payment fees; you can get nearly the same result free by adding 1/12 of your payment to each monthly payment as extra principal. Check that your servicer applies the extra money to principal.