Biweekly Mortgage Calculator
Last updated: October 15, 2026
Estimate payoff savings from making half-payments every two weeks.
Estimated payoff time
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- Regular monthly payment: —
- Estimated interest saved: —
On this page
Quick summary: Estimate payoff savings from making half-payments every two weeks.
Read the method, example and limitations
Updated reference sections in this guide are in English.
Guide language: English. Updated October 15, 2026.
What this calculator estimates
Biweekly Mortgage Calculator
Inputs and units
Use the units shown for Mortgage balance ($), Interest rate (%), Remaining term (years). Required fields cannot be blank. Use zero only where that field and the model allow it. Select Calculate after changing a scenario.
Method and assumptions
This illustration spreads one additional full monthly payment across the year: the monthly-equivalent payment is the regular payment multiplied by 13/12. Each simulated month adds interest, then applies that payment. Compare its interest with the scheduled monthly loan.
Worked example
For 1,200 over 12 months at 0%, the regular payment is 100 and the monthly-equivalent payment is about 108.33. The final smaller payment falls in month 12.
Limitations
This is an approximation of 26 half-payments per year. It does not model actual two-week payment dates, daily interest, servicer payment holding or fees. Enter a term within 100 years.