Biweekly Mortgage Payment Calculator 2026
See how paying half your mortgage every two weeks can shave years off your loan and save tens of thousands in interest — compared side by side with a standard monthly payment plan.
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How the Savings Work
26 half-payments per year equals 13 full payments — one extra month of principal per year, every year. That compounds into major interest savings and a faster payoff.
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Compare Lenders NowWhy Biweekly Mortgage Payments Work
A standard 30-year mortgage makes 12 payments per year. A biweekly plan splits that monthly payment in half and sends it every two weeks — 26 times per year. Because 26 halves equal 13 full payments, you contribute the equivalent of one extra monthly payment annually. Over the life of the loan, that extra principal dramatically reduces the total interest you pay and moves your payoff date years earlier.
Biweekly vs. Monthly: Key Differences
- Payment frequency: 26 half-payments (biweekly) vs. 12 full payments (monthly)
- Annual total: The equivalent of 13 monthly payments vs. 12
- Interest accrual: Paying every two weeks trims interest slightly faster than once a month
- Payoff: Typically 5-8 years earlier on a 30-year loan, depending on rate
- Budgeting: Requires matching your cash flow to a two-week cadence
Biweekly Mortgage Calculator FAQ
How does a biweekly mortgage payment plan work?+
Instead of making 12 full mortgage payments per year, you pay half of your monthly payment every two weeks. Because there are 52 weeks in a year, that means 26 half-payments — the equivalent of 13 full monthly payments annually. That extra payment goes straight to principal, which shortens your loan term and reduces total interest.
How much interest can I save with biweekly payments?+
On a typical $300,000, 30-year loan at 6.5%, biweekly payments save roughly $110,000 in interest and pay the loan off about 6-7 years early. The exact savings depend on your loan amount, interest rate, and term. Use the calculator above to see your personalized numbers.
Is a biweekly payment plan the same as making one extra payment per year?+
Financially, they are nearly identical — both result in 13 full payments per year. However, biweekly plans automate the extra payment so you never have to remember to send it, and because payments land every two weeks, you also shave a few days of interest accrual off the balance with each payment.
Does my lender charge fees for biweekly mortgage payments?+
Some third-party biweekly programs charge setup and service fees (often $300-$500 upfront plus a monthly fee), which can eat into your savings. Many lenders now offer free biweekly payment plans or let you simply add extra principal payments yourself. Always ask your lender before enrolling in a paid service.
Can I switch to biweekly payments at any time?+
Yes, most lenders allow you to switch to a biweekly schedule whenever you want, though some require you to remain on the plan for a minimum period. Make sure any extra amount is clearly applied to principal, and confirm there are no prepayment penalties on your loan.