Smart Loan Analyzer

Biweekly Mortgage Calculator

See exactly how many years and how much interest you save by paying your mortgage biweekly instead of monthly.

Paying half your mortgage every 14 days adds up to 26 payments per year — the equivalent of 13 monthly payments, or one extra full payment annually. On a typical 30-year mortgage that single extra payment shaves 4–6 years off the loan and saves tens of thousands in interest.

Mortgage Details
$300,000
6.50% p.a.
30 years
Standard Monthly

Monthly payment

$1,896

Total interest$382,633
Total paid$682,633
Payoff dateApr 2056
Biweekly Plan

Biweekly payment

$948

every 14 days · 26 payments / yr

Total interest$295,377
Total paid$595,377
Payoff dateJun 2050
Your Savings with Biweekly Payments

Interest saved

$87,256

Time saved

5 yr 10 mo

Paid off in

24 yr 2 mo

Paying half your monthly payment every 14 days adds up to 26 biweekly payments per year, or the equivalent of 13 monthly payments — one extra payment annually. That single extra payment shortens a typical 30-year mortgage by roughly 4–6 years and saves tens of thousands in interest.

Frequently Asked Questions

How do biweekly mortgage payments save you money?

You pay half your monthly mortgage every 14 days. Because there are 52 weeks in a year, that works out to 26 biweekly payments — equivalent to 13 monthly payments per year, one extra payment annually. That extra payment goes 100% to principal, which slashes the interest charged on every future month and shortens the loan.

How much can I save on a $300,000 mortgage with biweekly payments?

On a $300,000 30-year mortgage at 6.5%, the standard monthly payment is about $1,896 and total interest over 30 years is roughly $382,633. Switching to biweekly ($948 every 14 days) pays the loan off in about 24.5 years and cuts total interest to roughly $304,000 — saving around $78,000 and over 5 years of payments.

Is biweekly the same as paying extra each month?

Mathematically, yes. Paying biweekly is equivalent to making 1/12 of a monthly payment as extra principal every month — you arrive at the same payoff date and the same interest savings either way. The advantage of biweekly is that it aligns with biweekly paychecks, so the extra payment happens automatically without budgeting for a separate "extra payment."

Should I sign up for my lender's biweekly program or do it myself?

Many lenders charge $200–$400 enrollment plus monthly fees for biweekly programs — and some only credit the extra payment once a year, which kills most of the benefit. You can get the exact same result fee-free by either paying half your mortgage every two weeks directly, or simply adding 1/12 of your payment to each monthly payment as extra principal. Always confirm your lender accepts extra principal payments without penalty first.