Biweekly Mortgage Calculator
Switching to biweekly mortgage payments — paying half your monthly amount every two weeks — results in one extra monthly payment per year. That single change can pay off your mortgage years early and save tens of thousands in interest. See your savings below.
Formula reviewed for accuracy. Our methodology & sources
Biweekly Mortgage Calculator
mortgage calculator
How It Works
There are 52 weeks in a year, so paying every two weeks means 26 half-payments — the equivalent of 13 full monthly payments instead of 12. That extra payment goes straight to principal, shrinking your balance faster and cutting the interest you pay over the life of the loan.
Formula
Biweekly Payment = Monthly Payment ÷ 2, paid every 2 weeks (26 payments/year = 13 monthly payments).
Examples
$320K at 6.5% over 30 years
Pays off about 5 years early and saves well over $80,000 in interest.
Frequently Asked Questions
How does a biweekly mortgage save money?
You make 26 half-payments per year, equal to 13 monthly payments instead of 12. The extra payment reduces your principal directly, so you pay less interest and finish the loan years sooner.
Is a biweekly mortgage worth it?
For most borrowers, yes — it can save tens of thousands in interest and shave years off the loan with no change in monthly budget feel. Make sure your lender applies extra payments to principal and charges no fee.
Can I do this myself without a program?
Yes. You can simply pay 1/12 extra toward principal each month, or make one extra full payment per year. You don't need a paid biweekly program to get the same benefit.
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