Calculate bi-weekly mortgage payments and see how much interest and time you save compared to monthly payments. Includes escrow, year-by-year balance comparison.
Switching from monthly to bi-weekly mortgage payments is one of the simplest ways to pay off your mortgage faster and save thousands in interest. The math is straightforward: making 26 half-payments per year is equivalent to 13 full monthly payments — effectively one extra payment each year toward principal.
This extra payment may not seem dramatic, but over the life of a 30-year mortgage, it can shave 4–6 years off the term and save tens of thousands in interest. The best part is that each bi-weekly payment is exactly half of your monthly payment, so it fits naturally into a bi-weekly paycheck schedule without straining your budget.
This calculator compares monthly vs bi-weekly payment strategies side by side. Enter your loan details and see the payment amounts, total interest under each scenario, years saved, and a year-by-year balance comparison. Add optional extra amounts to each bi-weekly payment for even faster payoff.
Bi-weekly payments are the lowest-effort way to accelerate mortgage payoff. You pay the same amount per payment (half of monthly) but end up making one extra payment per year. This calculator quantifies the savings so you can see whether setting up bi-weekly autopay is worth the minor administrative effort — spoiler: it almost always is.
Bi-weekly Payment = Monthly Payment ÷ 2. Annual payments: 26 bi-weekly = 13 monthly equivalents (vs 12 monthly). The extra annual payment goes entirely to principal, accelerating payoff. Interest saved = Total Interest (monthly) − Total Interest (bi-weekly).
Result: Bi-weekly: $949 every 2 weeks — saves $62,422 in interest — payoff 5.2 years early
A $300,000 loan at 6.5% for 30 years has a $1,896 monthly payment. Bi-weekly is $948 every two weeks. Over the life of the loan, you save $62,422 in interest and pay it off in about 24.8 years instead of 30.
The main savings come from making 26 half-payments each year, which equals 13 full monthly payments instead of 12. That extra annual payment reduces principal faster, so less interest accrues in every later year of the schedule.
People often assume the savings come mostly from paying every two weeks instead of once a month. In practice, the bigger effect is the extra annual principal payment. The earlier payment timing helps a little, but the 13th payment does most of the work.
Some servicers apply each half-payment when received, while others hold the first half until the second half arrives and then post a full monthly payment. If fees or holding periods apply, compare that setup with the simpler alternative of making one extra full payment each year.
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This page starts with the standard monthly principal-and-interest mortgage payment, divides it into equal half-payments, and then simulates 26 half-payments per year instead of 12 monthly payments. It compares total interest, payoff timing, and optional extra bi-weekly principal against the standard monthly schedule and can layer in escrow inputs for budgeting context.
It assumes the servicer applies each bi-weekly payment promptly. Some programs hold half-payments until the full monthly amount is collected or charge service fees, which can reduce or delay the savings shown here.
On a $300,000 loan at 6.5%, bi-weekly payments save about $62,000 in interest and pay off the loan about 5 years early. Savings increase with higher loan amounts and rates.
There are 52 weeks in a year, so 26 bi-weekly payments equals 13 half-payments (or 13 × half = 6.5 full payments vs 6 per half-year). This effectively makes one extra full payment per year, which goes entirely to principal.
Most lenders allow it, but some charge fees for bi-weekly programs. Check with your lender. Alternatively, divide your monthly payment by 12 and add that amount as extra principal each month for a similar effect.
They produce very similar results. Bi-weekly has a slight edge because payments are applied more frequently, reducing the average daily balance slightly. The difference is typically only a few hundred dollars over 30 years.
You can achieve the same result by paying 1/12 of a monthly payment extra each month, or by making one full extra payment at any point during the year. The key is the extra annual payment, regardless of timing.
Yes. Your escrow (taxes and insurance) is simply split into 26 bi-weekly amounts instead of 12 monthly amounts. Ask your servicer to set up bi-weekly including escrow.