Biweekly Loan Payment Calculator
Pay half every two weeks and save interest.
Biweekly scenarios computed locally — no tracking, no uploadYour payment breakdown appears here
Fill in the loan details and press Calculate — the monthly payment, total interest and schedule will render right on this page, with nothing sent to any server.
How to use
Biweekly payments mean half your monthly payment every two weeks — 26 half-payments a year, which equals 13 full payments instead of 12. That extra payment each year attacks the principal and shortens the loan.
How to use
- Enter the loan amount, APR and term in years.
- Press Calculate to compare the standard monthly plan against the biweekly plan.
Example
A $20,000 loan at 6.5% for 5 years has a monthly payment of about $391. Paying half ($196) every two weeks clears the loan in about 50 months instead of 60 and saves roughly $2,500 of interest. On a 30-year mortgage the same trick can shave years off the term.
Formula
Each biweekly period uses a two-week rate derived from the monthly rate, with payment = monthly / 2 applied 26 times a year. The balance compounds 26 periods per year, so it falls faster than the 12-payment schedule.
Where the savings come from
The biweekly plan is not magic — it is an extra full payment every year applied to principal. If you simply add one extra monthly payment per year to your normal schedule, you get nearly the same result.
Watch for setup fees
Some lenders charge to set up a biweekly auto-draft program. If the fee exceeds the interest saved, skip it and just send one extra payment a year yourself.
Should you switch?
Biweekly plans suit people paid every two weeks — the payment timing matches the paycheck. If you are paid monthly, an automatic extra payment once a year achieves nearly the same result without the scheduling friction. Run both numbers here: the biweekly plan above, then the extra-payment tool for the annual extra.
FAQ
Does biweekly equal one extra payment a year?
Yes — 26 half-payments equal 13 full payments versus 12 monthly, so you effectively pay one extra month per year.
How much does it save on a car loan?
On a 5-year, $20,000 loan at 6.5%, roughly $2,500 of interest and about 10 months off the term.
Works for mortgages?
Very common for mortgages; the savings are large over 30 years.
Are there fees?
Some lenders charge for biweekly programs — compare the fee against the interest saved.
Reviewed by the LoanMath editorial team