Enter the loan, APR, and term to view biweekly payment, payoff date, and totals.
Amortization table
| # | Date | Payment | Principal | Interest | Balance |
|---|
FAQ
How does biweekly amortization work?
Payments occur every 14 days. Interest is computed using APR/26 per period on the prior balance; the remaining portion pays down principal. Extra payments reduce principal right after interest booking.
What does the CSV include?
Period number, date, payment, principal, interest, and ending balance.
How is a biweekly schedule different from monthly payments?
A true biweekly schedule has 26 payments per year, so the annual cash flow can be close to 13 monthly payments. This table shows how each 14-day payment splits into interest and principal.
How do extra principal payments change the payoff?
Extra principal is applied after the period's interest is booked. It lowers the next balance used for interest, so compare payoff date and total interest against a run without extra payments.
Can I use this as the final lender schedule?
Use it for planning, audits, and CSV exports. Lender disclosures can use different day counts, fees, escrow rules, and rounding, so confirm official numbers before signing or refinancing.
How to use Biweekly Loan Amortization (26/yr) effectively
What this calculator does
Build a 26-payments-per-year amortization table from the loan amount, APR, term, payment date, and optional extra principal. The schedule separates interest and principal for each biweekly period and totals the payoff timeline.
Input meaning
Use the loan amount as the starting principal, APR as the annual nominal rate, and the biweekly payment as the amount paid every 14 days. Extra principal is added to each period after interest, so it reduces the following balance.
Use-case sequence
Run a baseline without extra principal first, then save or export it. Next, add a realistic extra amount and compare payoff date, total interest, and final payment size instead of judging only one row.
Common mistakes to avoid
- Treating biweekly payments as twice-monthly payments; this page assumes 26 payments per year.
- Comparing against a monthly schedule without matching annual cash flow.
- Ignoring fees, escrow, payment holidays, or lender-specific day-count rules.
- Changing the start date and extra principal together, which makes the interest difference harder to explain.
Interpretation guidance
The most useful comparison is usually total interest and payoff date versus the baseline. Use the CSV to audit assumptions, but treat lender statements and disclosures as authoritative for final decisions.