Loading Legacy
See how switching to bi-weekly payments shaves years off your mortgage and thousands in interest.
Years Saved
6 yrs 3 mo
Payoff in 23 yrs 9 mo vs 30 yrs
Total Interest Saved
$120,689
$366,746 vs $487,435 monthly
Monthly Payment
$2,326
Bi-Weekly Payment
$1,163
Monthly Total Interest
$487,435
Bi-Weekly Total Interest
$366,746
Remaining Balance Comparison
| Year | Monthly | Bi-Weekly | Diff |
|---|---|---|---|
| Year 5 | $329,425 | $315,487 | $13,939 |
| Year 10 | $300,273 | $266,558 | $33,715 |
| Year 15 | $258,966 | $197,191 | $61,775 |
| Year 20 | $200,437 | $98,850 | $101,586 |
| Year 25 | $117,506 | $0 | $117,506 |
Key Insight
Bi-weekly payments = 13 monthly payments per year vs 12 — one extra payment annually with no lifestyle change. You simply pay half your monthly amount every two weeks instead.
Confirm your lender accepts bi-weekly payments and applies them immediately — some hold funds until a full month accumulates.
Bi-Weekly Mortgage Calculator simulates 26 bi-weekly half-payments per year (equivalent to 13 monthly payments) versus 12 monthly payments, tracking balance month-by-month to show years saved and total interest saved.
Bi-Weekly Mortgage Calculator is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
Monthly payment = standard PMT formula. Bi-weekly payment = monthly PMT / 2; 26 payments/year. Simulation runs period-by-period using the bi-weekly interest rate (annual rate / 26) until the balance reaches zero. Monthly simulation runs month-by-month for the full term. Both track remaining balance year-by-year for the comparison table.
With bi-weekly payments you make 26 half-payments per year, which equals 13 full monthly payments instead of 12. That extra payment goes entirely to principal, reducing your balance faster and saving interest.
On a typical 30-year mortgage at 7%, switching to bi-weekly payments saves about 4–5 years and tens of thousands in interest. Your exact savings depend on your rate and balance.
Most lenders accept bi-weekly payments, but some may not apply the extra payment directly to principal without explicit instruction. Verify with your servicer — or simply make one extra principal payment per year, which achieves the same result.
They are mathematically equivalent if the extra amount is the same. Bi-weekly just spreads the extra across 26 periods, which can feel more manageable and aligns naturally with bi-weekly paychecks.
Generate a full mortgage amortization schedule showing principal, interest, and balance for every year of your loan.
Find your refinance break-even point and calculate lifetime savings with a new rate.
How much house can you afford? Uses the 28/36 lender rule with live mortgage rates.