Biweekly Mortgage Calculator
Paying every two weeks instead of monthly creates 26 half-payments per year — the equivalent of one extra full payment annually. See exactly how much time and interest this strategy saves.
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How Biweekly Mortgage Payments Save Money
The biweekly payment strategy is simple: instead of making one full mortgage payment per month, you pay half your monthly payment every two weeks. Since there are 52 weeks in a year, this results in 26 half-payments — the equivalent of 13 full monthly payments instead of the standard 12. That one extra payment per year goes entirely to principal.
On a 30-year mortgage, this strategy typically cuts 4–6 years off the loan term and saves tens of thousands of dollars in interest — without any significant change to your budget. The biweekly amount is roughly the same per-paycheck as a standard monthly payment if you're paid biweekly.
Important: Not All Lenders Apply Biweekly Correctly
- Some lenders collect biweekly payments but only apply them monthly — this negates the benefit.
- Confirm that your lender applies each payment immediately to reduce the principal balance.
- Alternatively, simply add 1/12 of your monthly payment as extra principal each month to replicate the effect.
Want to see the impact of other payment strategies? Use the Extra Payment Calculator to compare custom monthly extra payments, or the Mortgage Calculator to see your base payment first.
Frequently Asked Questions
How does a biweekly mortgage save money?
Paying half your monthly payment every two weeks means 26 half-payments, or 13 full payments, a year instead of 12. The extra payment goes to principal. On a $350,000 30-year loan at 6.5%, that pays the loan off almost 6 years early and saves about $100,000 in interest.
Can I get the same result without a biweekly program?
Yes. Adding one-twelfth of your monthly payment to principal each month has nearly the same effect and avoids enrollment or processing fees that some third-party biweekly services charge.
Does my lender apply half-payments immediately?
Not always. Many servicers hold a half-payment in suspense until the second half arrives, so the savings depend on the extra 13th payment rather than on paying earlier. Ask your servicer how partial payments are applied.
Is a biweekly schedule good if I am paid every two weeks?
It matches the payment to your paycheck, which makes budgeting easier. Two months a year you receive three paychecks, and those months fund the extra payment.