Biweekly Mortgage Calculator

Compare a standard monthly mortgage payment with a biweekly plan that pays half the monthly amount every two weeks (26 payments/year) and estimate interest saved and months shaved off.

Inputs

Formula

M_monthly from amortizing formula
biweekly payment = M_monthly / 2
Simulate balance with r_bi = APR/100/26

Assumes 26 biweekly payments per year. Extra annual principal ≈ one monthly payment.

Category: Finance

$350k / 6.5% / 30y

Biweekly vs monthly interest & payoff time.