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Biweekly mortgage payments: how to set them up and what they save
With biweekly mortgage payments you pay half your monthly payment every two weeks. That's 26 half payments a year, the same as 13 monthly payments instead of 12, and the extra payment goes to principal. On a $250,000, 30-year loan at 6.5%, that pays the loan off about 5 years and 10 months early and saves about $73,000 in interest. You can get nearly the same result for free by adding one twelfth of your payment to each monthly payment, so never pay a company to set it up.
How biweekly mortgage payments work
A year has 52 weeks, so paying every two weeks means 26 payments. Twenty-six half payments add up to 13 full monthly payments. The 12 regular ones cover what you owe for the year; the 13th goes to principal, the loan balance itself. A lower balance means less interest each month after, so more of every later payment goes to principal too. That's why one extra payment a year shortens a 30-year loan by several years.
Early on, most of each payment is interest. In the first year of a $250,000 loan at 6.5%, about $16,170 of the $18,960 you pay is interest and only about $2,790 lowers the balance. One extra $1,580 payment that year would lower the balance by about $4,370 instead of $2,790.
The twice-a-month mistake
Paying half on the 1st and half on the 15th is not biweekly. That's 24 half payments, which is exactly 12 monthly payments: no extra payment, and no savings. Biweekly means every 14 days, on the same weekday, so twice a year a third payment falls in one month.
What biweekly payments save
These are worked out for a fixed-rate 30-year loan, counting principal and interest only (not taxes and insurance). "Biweekly" assumes each half payment is applied as it arrives.
| Loan | Monthly payment | Interest, monthly for 30 years | Interest, biweekly | Saved | Paid off in |
|---|---|---|---|---|---|
| $180,000 at 7% | $1,197.54 | $251,116 | $189,083 | $62,033 | about 23 years 9 months |
| $250,000 at 6.5% | $1,580.17 | $318,861 | $245,426 | $73,435 | about 24 years 2 months |
| $300,000 at 6% | $1,798.65 | $347,515 | $273,079 | $74,436 | about 24 years 6 months |
Your own numbers depend on your rate, balance and years left. A loan that's already 10 years in saves less in dollars, because there's less interest left to save: after 10 years the $250,000 loan above still has about $211,940 to go.
Five ways to get the same effect, compared
The savings come from the extra money, not from the calendar. Here is the same $250,000 loan at 6.5% paid five ways:
| Method | Extra a year | Paid off in | Interest saved | Cost |
|---|---|---|---|---|
| Monthly, no extra | $0 | 30 years | $0 | Free |
| Biweekly halves, applied as received | $1,580 | 24 years 2 months | $73,435 | Free if your servicer does it |
| One twelfth extra each month ($131.68) | $1,580 | 24 years 2 months | $72,713 | Free |
| One extra full payment each year | $1,580 | 24 years 4 months | $69,987 | Free |
| $100 extra each month | $1,200 | 25 years 4 months | $58,860 | Free |
| $50 extra each month | $600 | 27 years 5 months | $32,911 | Free |
The free monthly options land within a few months and a few thousand dollars of true biweekly. Pick the one that fits your paychecks, not the one with a program name.
Watch out for paid biweekly programs
Some companies sell biweekly "accelerator" programs: they take money from your account every two weeks and pass it to your lender. In 2015 the Consumer Financial Protection Bureau sued one of the largest, Nationwide Biweekly Administration, saying it charged setup fees of up to $995 plus yearly fees of $84 to $101, and kept the first extra payments as its fee while marketing the savings as if they went to the loan. On the $250,000 loan above, a $995 fee takes most of the first year's $1,580 extra payment.
Some lenders and servicers offer a biweekly option themselves. Ask whether it has any fee and when each half payment is applied. If there's a fee, use one of the free ways instead.
How to set up biweekly mortgage payments
- Read your mortgage statement and note your monthly payment, how much of it is principal and interest, how much is escrow (taxes and insurance), your interest rate and the balance.
- Check for a prepayment penalty. Look in your loan documents or ask. Many loans made in recent years don't have one, but some do, usually only in the first few years.
- Call or message your servicer (the company you send payments to) with the questions below.
- Choose your method. If the servicer offers free biweekly payments applied as they arrive, use it. If it holds half payments until it has a full one, choose a free method from the table instead.
- Mark the extra "apply to principal". Most online payment pages have a separate box for extra principal. Without it, the extra may be treated as an early payment of next month.
- Check your next statement. The extra should show as a principal payment, and the balance should drop by that amount.
Questions to ask your servicer
- Do you offer a biweekly payment schedule, and is there any fee to join or to stay in it?
- When I pay half, do you apply it to the loan right away, or hold it until you have a full payment?
- If I pay extra, how do I make sure it goes to principal?
- Is there a prepayment penalty on my loan?
- How do biweekly payments work with my escrow for taxes and insurance?
- Can I stop the biweekly schedule at any time, and how?
Servicers are allowed to hold a payment that's less than a full monthly payment in a separate account until the rest arrives. If yours does, a half payment sits there earning nothing, and the savings come only from the 13th payment at the end of the year.
Fitting the mortgage into a biweekly paycheck
If you're paid every two weeks, matching the mortgage to your checks is the part that matters most for your monthly budget, extra payments or not. A simple way:
- Set aside half the mortgage from every paycheck into a separate "house" savings account the day you're paid. On a $1,580 payment that's $790 a check.
- Pay the mortgage once a month from that account, on its due date.
- Twice a year you'll get a third paycheck in one month. The two extra $790 set-asides then build up to $1,580: send it to principal. That is exactly one extra payment a year, the same as a biweekly plan, and it's free.
This also stops the mortgage from landing on one check and leaving that week short. Our guide on how to pay bills when you get paid biweekly uses the same half-from-each-check idea for rent and other bills, and the bill calendar template shows where your three-paycheck months fall.
A worked month
| Payday | To house account | House account after | What happens |
|---|---|---|---|
| Friday 1 | $790 | $790 | |
| Friday 2 | $790 | $1,580 | Mortgage due on the 1st: $1,580 paid, account back to $0 |
| Friday 3 (a third-check month) | $790 | $790 | Held for the extra |
| Next third-check month | $790 | $1,580 | $1,580 sent as extra principal |
When biweekly payments aren't worth it
- You don't have an emergency fund. An extra $1,580 a year in the house is money you can't get back quickly if the car breaks down. Build a starter fund of $500 to $1,000 first; our guide on an emergency fund on a tight budget shows how.
- You have higher-interest debt. Credit cards often charge 20% or more. Extra money usually does more there than on a 6% mortgage.
- Your checking runs close to zero. An automatic pull every two weeks can trigger an overdraft. See our guide to avoiding overdraft fees before you add one.
- You're selling or refinancing soon. The big savings come over many years.
- The only option costs money. A free method saves the same.
- You're on a low, fixed rate. If your rate is well below what savings accounts pay, some people prefer to keep the extra in savings. That's a personal choice, not a rule.
Biweekly payments vs a 15-year loan or refinancing
A 15-year loan or a refinance to a shorter term saves more interest but locks in a much higher required payment, and refinancing has closing costs. Biweekly or extra payments keep your required payment the same: if money gets tight, you just stop the extra. That flexibility is the main reason to choose extra payments when your paychecks are tight.
Mistakes to avoid
- Paying on the 1st and 15th and thinking it's biweekly.
- Sending extra without marking it for principal.
- Paying a third-party company a setup fee.
- Not checking whether the servicer holds half payments.
- Sending extra to the house while carrying high-rate card debt or no emergency fund.
- Setting the automatic pull on a day before your paycheck clears.
Biweekly mortgage questions
Is it a good idea to make biweekly mortgage payments?
It can be, if it's free, your servicer applies the payments properly, you have an emergency fund and no higher-interest debt. Otherwise one of the free monthly methods does nearly the same.
How much do biweekly mortgage payments save?
On a $250,000, 30-year loan at 6.5%, about $73,000 in interest and nearly six years. Savings depend on your rate, balance and years left.
Is paying biweekly the same as one extra payment a year?
Nearly. Both add one monthly payment a year. On the $250,000 example, biweekly finishes about two months sooner and saves about $3,400 more, because the extra arrives through the year.
Can I just add extra to my monthly payment instead?
Yes. Adding one twelfth of your payment each month, marked as principal, saves almost exactly what biweekly does, with no change to your schedule.
Do biweekly payments include escrow?
If your monthly payment includes taxes and insurance, half payments are usually half of the full payment. Ask your servicer how they apply the extra so it goes to principal, not escrow.
Can I stop biweekly payments?
With a free method, yes, at any time; your required monthly payment never changed. With a lender or third-party program, ask how to cancel before you join.
Call your servicer with the six questions above, then pick the free method that matches your paydays. If your checks feel too tight for any extra, the free money leak quiz shows in two minutes where each paycheck leaks, with no bank login. More guides on bills and paydays are on the Ahead Again guides page.
Budgeting help only. This guide isn't mortgage, financial or tax advice. Check the terms of your own loan with your servicer.
Sources
- Consumer Financial Protection Bureau, "CFPB Files Suit Against Nationwide Biweekly for Luring Consumers with False Promises of Mortgage Savings", May 11, 2015: setup fees up to $995, annual fees of $84 to $101. consumerfinance.gov
- Chase, "Monthly vs. biweekly mortgage payments": 26 half payments equal 13 monthly payments. chase.com
- Consumer Financial Protection Bureau, mortgage servicing rules (Regulation X): servicers may hold partial payments in a suspense account. consumerfinance.gov
- Interest and payoff figures: Ahead Again's own amortisation of fixed-rate 30-year loans, principal and interest only, 2026-11-03.