Biweekly Mortgage Payment Calculator
Standard vs biweekly principal balance
Year-end remaining principal with monthly payments versus accelerated biweekly half-payments.
Amortization schedule
| S.No | Date | Standard | Biweekly |
|---|
How to Use This Calculator
- Enter your Principal loan balance, Annual interest rate, Amortization length, and Start date for the schedule.
- Click Calculate to see the contractual monthly payment, half-payment (biweekly) amount, and interest comparison.
- Review the principal balance chart and amortization schedule; use Excel or PDF to export the schedule.
- Confirm with your servicer that extra amounts apply to principal; assumptions here are for planning only.
Frequently Asked Questions
How is biweekly modeled?
You pay half of the standard monthly P&I every two weeks (26 times per year). Interest accrues each period using your annual rate divided by 26. Your lender may use a different day-count or posting schedule, so results are estimates.
Why does biweekly pay the loan off sooner?
Twenty-six half-payments per year equals 13 full monthly equivalents of cash toward the loan instead of 12, so more principal is paid down each year if the servicer applies payments correctly.
Does this include taxes, insurance, or PMI?
No. This tool covers principal and interest only, like a standard P&I comparison. Add escrow separately if needed.
What about prepayment penalties?
The math assumes no penalty for paying ahead. Check your loan documents before changing your payment plan.
