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Biweekly mortgage calculator
Pay half your mortgage every two weeks and make one extra payment a year automatically. See exactly how much it saves.
Your biweekly payoff plan
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Estimates only, not a loan offer. Excludes taxes, insurance and fees unless entered. See our disclaimer.
Biweekly vs monthly payments
A biweekly plan splits your monthly payment in half and charges it every two weeks. Over a year that adds up to 26 half-payments — the equivalent of 13 monthly payments instead of 12. That single extra payment each year goes straight to principal and can take years off a 30-year mortgage.
The calculator above is set to Biweekly, with real two-week payment dates in the schedule. Switch the frequency back to Monthly to compare side by side, and download either version to Excel or PDF.
Before you sign up for a biweekly program
Banks and third parties sometimes sell "biweekly mortgage programs" for a fee. You rarely need one. Two cautions:
- Confirm your servicer applies each biweekly payment immediately to the balance, not just once a full monthly amount has built up.
- Avoid programs with setup or transaction fees — you can replicate the result for free by paying roughly 1/12 extra principal each month.
Frequently asked questions
- How do biweekly mortgage payments work?
- Instead of 12 monthly payments, you pay half your monthly amount every two weeks. Because there are 52 weeks in a year, that is 26 half-payments — equal to 13 full monthly payments. The "13th payment" goes entirely to principal, shortening your loan.
- How much does biweekly save?
- On a typical 30-year mortgage, a true biweekly schedule pays the loan off roughly 4-6 years early and saves tens of thousands in interest, depending on your rate and balance. Switch the calculator to Biweekly above to see your exact savings.
- Is biweekly better than just paying extra monthly?
- They are mathematically similar — a biweekly plan is roughly the same as paying one extra monthly payment per year. Paying extra monthly gives you more control and avoids any servicer fees, while biweekly automates the discipline. Neither is dramatically better; the key is consistency.
- Are there risks with biweekly programs?
- Yes. Some servicers do not apply biweekly payments until a full monthly amount accumulates (removing the benefit), and some third-party "biweekly programs" charge setup or per-payment fees. You can usually get the same result for free by paying a little extra principal yourself.