Biweekly Mortgage Calculator
Pay half your mortgage every two weeks instead of the full amount once a month, and you make 26 half-payments a year, which equals 13 monthly payments instead of 12. That one extra payment goes to principal and can shave years off the loan. Toggle biweekly below to see your savings.
Your numbers
Loan balance over time
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Amortization schedule
Every payment, split into principal and interest. Export it or print a copy.
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 2026 | $2,749 | $10,618 | $317,251 |
| 2027 | $5,779 | $20,955 | $311,473 |
| 2028 | $6,175 | $20,558 | $305,297 |
| 2029 | $6,600 | $20,134 | $298,698 |
| 2030 | $7,053 | $19,681 | $291,645 |
| 2031 | $7,537 | $19,196 | $284,108 |
| 2032 | $8,055 | $18,679 | $276,054 |
| 2033 | $8,608 | $18,126 | $267,446 |
| 2034 | $9,199 | $17,534 | $258,247 |
| 2035 | $9,831 | $16,903 | $248,417 |
| 2036 | $10,506 | $16,228 | $237,911 |
| 2037 | $11,227 | $15,506 | $226,684 |
| 2038 | $11,998 | $14,735 | $214,686 |
| 2039 | $12,822 | $13,911 | $201,864 |
| 2040 | $13,702 | $13,031 | $188,162 |
| 2041 | $14,643 | $12,090 | $173,518 |
| 2042 | $15,649 | $11,084 | $157,870 |
| 2043 | $16,724 | $10,010 | $141,146 |
| 2044 | $17,872 | $8,861 | $123,274 |
| 2045 | $19,099 | $7,634 | $104,175 |
| 2046 | $20,411 | $6,322 | $83,764 |
| 2047 | $21,812 | $4,921 | $61,952 |
| 2048 | $23,310 | $3,423 | $38,641 |
| 2049 | $24,911 | $1,822 | $13,730 |
| 2050 | $13,730 | $280 | $0 |
Where the extra payment comes from
A year has 52 weeks, so paying every two weeks means 26 payments. At half your monthly amount, that is the equivalent of 13 full monthly payments, one more than the usual 12. That extra payment lands entirely on principal, and because it repeats every year, the effect builds over the life of the loan.
This calculator models biweekly as that one extra payment spread evenly across the year, which is how most lender programs behave. The savings shown are the difference against a standard monthly schedule.
You can do this yourself for free
Some servicers charge a setup or per-payment fee for a formal biweekly program. You do not need it. Paying an extra one-twelfth of your payment each month, or a full extra payment once a year, produces the same result at no cost. The goal is the extra principal, not the schedule itself.