Biweekly Mortgage Calculator

Not all lenders accept true biweekly payments. Some lenders hold the biweekly payment until a full month's payment is accumulated before applying it, which eliminates the benefit. Always confirm your lender applies each payment immediately upon receipt. A simpler alternative: divide your monthly payment by 12 and add that amount to each monthly payment as an extra principal payment.

Standard biweekly payments split your monthly payment in half and pay every two weeks — 26 payments of monthly/2. Accelerated biweekly uses a higher amount (the monthly payment is not reduced for the biweekly schedule), meaning each payment is slightly above half of the monthly amount. This calculator uses the standard method where biweekly payment = monthly payment ÷ 2.

Savings vary by loan size and interest rate, but on a typical $350,000, 30-year mortgage at 6.81%, biweekly payments can save over $50,000 in interest and shave roughly 4–5 years off the loan term. Higher interest rates produce proportionally larger savings because the extra principal payment reduces a bigger interest burden each cycle.