Bi-Weekly Mortgage Payment Calculator

How Bi-Weekly Payments Work

Instead of making one full mortgage payment per month (12 payments/year), bi-weekly payments mean you pay exactly half your monthly amount every two weeks — 26 half-payments per year.

26 half-payments = 13 full monthly payments. That one extra monthly payment per year, applied entirely to your principal, is what creates the savings.

How Much Does Bi-Weekly Save?

On a $520,000 mortgage at 6.25% over 25 years, switching to bi-weekly payments typically saves around $35,000–$45,000 in interest and cuts approximately 2–3 years off the loan. The higher your interest rate, the more you save.

How to Set Up Bi-Weekly Payments

• Ask your lender — many lenders support bi-weekly payment schedules directly. Some charge a small setup fee ($300–$500).
• Do it yourself — divide your monthly payment by 12 and add that amount as extra principal each month. This replicates the bi-weekly effect without needing lender involvement.
• Check your mortgage terms — confirm your prepayment privileges allow this before setting it up.

Bi-Weekly vs. Accelerated Bi-Weekly

Not all "bi-weekly" options are the same. Many lenders offer two versions: regular bi-weekly (your monthly payment × 12, divided by 26) and accelerated bi-weekly (your monthly payment simply divided by 2, paid 26 times a year — the version this calculator models).

Only accelerated bi-weekly creates the extra-payment effect described above. Regular bi-weekly just spreads the same annual total across more, smaller payments and saves you little beyond minor compounding differences. Always confirm with your lender which version they're offering before assuming you'll get the payoff-acceleration benefit.

Is Bi-Weekly Right for You?

• Pros: Fully automatic once set up — no need to remember to make extra payments. Works with most fixed-rate lenders. Lines up naturally if your paycheck is also bi-weekly.
• Cons: Some lenders charge a setup or administration fee. Withdrawals happen every two weeks instead of once a month, which can complicate budgeting if your income isn't bi-weekly. Check your mortgage's prepayment terms first — a few lenders restrict how payment frequency can be changed mid-term.

Related Calculators

Want to model a specific extra monthly amount instead? Use our Extra Payment Calculator — or see your full year-by-year breakdown with the Amortization Schedule Calculator.