Biweekly Mortgage Calculator
Compare monthly and biweekly mortgage payments, estimate your potential interest savings, and see how much earlier you may pay off your home loan.
Mortgage Details
Enter your current loan information below.
Your Estimated Results
Compare a standard monthly schedule with biweekly payments.
| Payment plan | Payment amount | Total paid | Total interest | Payoff period |
|---|---|---|---|---|
| Monthly | $0 | $0 | $0 | 0 years |
| Biweekly | $0 | $0 | $0 | 0 years |
Total Interest Comparison
What Is a Biweekly Mortgage Calculator?
A biweekly mortgage calculator estimates how your loan may change when you pay half of the normal monthly mortgage payment every two weeks instead of making one full payment each month.
Because there are 52 weeks in a year, a true biweekly schedule normally produces 26 half-payments. That is equal to 13 full monthly payments each year instead of the usual 12. The additional annual payment reduces the principal balance faster, which may shorten the payoff period and lower total interest.
Compare Payments
See the estimated monthly payment and the amount required every two weeks.
Estimate Savings
Calculate the potential difference in total interest between monthly and biweekly repayment.
Plan an Earlier Payoff
Estimate how many years and months may be removed from your mortgage term.
How the Biweekly Mortgage Calculator Works
Enter your mortgage balance
Add the amount you currently owe. For a new mortgage, use the original principal after subtracting your down payment.
Add the annual interest rate
Enter the loan's annual percentage rate without including taxes, insurance, or lender service charges.
Select the remaining loan term
Choose the number of years remaining on the mortgage rather than its original term when analyzing an existing loan.
Review your payment comparison
The calculator compares total payments, total interest, estimated payoff duration, and potential time savings.
Biweekly mortgage payment formula
The standard monthly principal-and-interest payment is calculated using the loan principal, monthly interest rate, and total number of monthly payments. The regular biweekly amount is then estimated as half of that monthly payment.
The calculator applies the biweekly amount every 14 days using an equivalent periodic interest rate. It continues reducing the balance until the mortgage reaches zero.
Benefits of Making Biweekly Mortgage Payments
Reduce the principal balance faster
The equivalent of one additional monthly payment is made each year. This extra amount is applied toward the mortgage balance when the lender processes the payments correctly.
Pay less interest over the loan term
Mortgage interest is calculated using the outstanding balance. Reducing that balance sooner can decrease the amount of interest charged during later years.
Match payments with your paycheck
Homeowners who are paid every two weeks may find it easier to budget half of their mortgage payment from each paycheck.
Build home equity sooner
Faster principal reduction may help increase your ownership share in the property earlier than a standard monthly schedule.
Important Things to Check Before Switching
Contact your mortgage servicer before setting up biweekly payments. Some lenders accept partial payments immediately, while others hold them in a separate account until a complete monthly payment has accumulated.
Ask whether the lender charges enrollment or transaction fees, whether extra money is applied directly to principal, and whether your mortgage has any prepayment restrictions.
You may be able to create a similar result without joining a formal biweekly program. One option is to divide one regular monthly payment by 12 and add that amount to each monthly payment as an additional principal payment.