Biweekly Mortgage Calculator
See how much interest and time you save by paying half your mortgage payment every two weeks instead of once a month, with a year-by-year balance comparison.
Results
| Item | Value |
|---|
Balance at the end of each year
| Year | Monthly payments | Biweekly payments |
|---|
Quick Answer
Paying half your mortgage payment every two weeks means 26 half payments, or 13 full payments, a year. On a $350,000, 30-year loan at 6.5%, the monthly payment is $2,212.24. Paying $1,106.12 every two weeks pays the loan off in about 24 years 2 months instead of 30 years and saves about $101,799.00 in interest.
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Table of Contents
- Biweekly Mortgage Calculator
- Quick Answer
- Related Calculators
- How This Biweekly Mortgage Calculator Works
- How to Use the Biweekly Mortgage Calculator
- Formulas Used
- Key Terms
- Worked Example
- Real-Life Examples
- Biweekly Payments vs Refinancing
- Interest Saved by Paying Biweekly (30-Year Loan)
- Watch Out for Biweekly Program Fees
- How to Get the Same Saving Yourself
- Common Mistakes to Avoid
- Frequently Asked Questions
- References & Sources
How This Biweekly Mortgage Calculator Works
Enter your loan balance, interest rate and years left. The calculator works out your normal monthly payment, then runs two schedules side by side: one with 12 monthly payments a year and one where you pay half every two weeks. Because a year has 52 weeks, that is 26 half payments, the same as 13 monthly payments. The extra payment goes to principal, so the balance falls faster and less interest builds up.
Quick explanation: biweekly paying sneaks in one extra payment a year.
- Monthly: 12 payments a year.
- Biweekly: 26 half payments = 13 full payments a year.
- Same effect for free: add 1/12 of your payment to each monthly payment.
How to Use the Biweekly Mortgage Calculator
- Enter your current loan balance.
- Enter your interest rate and the years left on the loan.
- Enter any fees a biweekly program would charge.
- Press Calculate.
- Compare payoff time and interest for monthly and biweekly paying.
Formulas Used
- Monthly payment: M = P × r ÷ (1 − (1 + r)^−n), with r = rate ÷ 12 and n = months
- Biweekly payment: M ÷ 2, paid 26 times a year
- Extra principal each month: M ÷ 12 (one extra payment spread over the year)
- Interest saved: total interest paying monthly − total interest paying biweekly − any fees
Key Terms
- Biweekly payment: half the monthly payment, paid every two weeks, 26 times a year.
- Principal: the amount you still owe, not counting interest.
- Amortization: paying off a loan with regular payments of principal and interest.
- Prepayment penalty: a fee some loans charge for paying off early.
- Servicer: the company that collects your mortgage payments.
Worked Example
A $250,000 balance at 7% with 30 years left.
- Monthly payment: $1,663.26; biweekly payment: $831.63
- Paying monthly: 30 years, $348,772.25 in interest
- Paying biweekly: 23 years 9 months, $263,418.53 in interest
- Saving: $85,353.72 and 6 years 3 months sooner debt-free
Real-Life Examples
- New 30-year loan: $350,000 at 6.5% paid biweekly saves about $101,799.00 and 5 years 10 months.
- 15-year loan: $400,000 at 6% saves about $27,103.56 and 1 years 9 months.
- Checking a program: enter a $995 setup fee to see how much of the saving it takes.
- Budgeting: line up half payments with a two-weekly paycheck.
Biweekly Payments vs Refinancing
- Biweekly paying costs nothing (if done directly), keeps your rate and lets you stop any time.
- Refinancing to a lower rate or shorter term can save more but has closing costs and needs approval.
- You can also do both: refinance, then add extra principal each month.
Interest Saved by Paying Biweekly (30-Year Loan)
| Loan | 5% | 6% | 7% | 8% |
|---|---|---|---|---|
| $200,000 | $33,933.38 | $49,110.24 | $68,282.97 | $91,816.14 |
| $300,000 | $50,900.08 | $73,665.36 | $102,424.46 | $137,724.21 |
| $400,000 | $67,866.77 | $98,220.48 | $136,565.95 | $183,632.27 |
| $500,000 | $84,833.46 | $122,775.60 | $170,707.44 | $229,540.34 |
Watch Out for Biweekly Program Fees
- Setup fees: the CFPB sued one biweekly payment company over setup fees of up to $995 and yearly processing fees.
- Held payments: some programs hold your half payments and send one monthly payment, so you gain nothing until the extra is sent.
- Fee first: some programs used the first extra payments to pay their own fee rather than your principal.
- Free option: most servicers let you add extra principal yourself at no cost.
- Prepayment penalty: check your loan terms; most current mortgages have none, but some older loans do.
How to Get the Same Saving Yourself
Divide your monthly principal and interest payment by 12 and add that amount to every monthly payment, marked as extra principal. On a $2,212.24 payment that is about $184.35 a month. Or make one extra full payment each year, for example from a tax refund. Either way you get almost exactly the saving shown here without signing up for a program.
If you are paid every two weeks, a true biweekly plan offered directly by your servicer can still make budgeting easier. Ask whether each half payment is applied when it arrives and whether there is any fee. Then enter the fee above to see your real saving.
Common Mistakes to Avoid
- Paying for a program you do not need. Adding extra principal yourself is usually free.
- Not marking extra money as principal. Otherwise it may be held or put toward the next payment.
- Ignoring held payments. If half payments sit until month end, there is no extra saving.
- Skipping an emergency fund. Extra mortgage payments are hard to get back if you need cash.
- Forgetting higher-rate debt. Paying off credit cards first usually saves more.
Frequently Asked Questions
On a $350,000, 30-year loan at 6.5%, about $101,799.00 in interest and 5 years 10 months of payments.
There are 26 two-week periods in a year, so you make 13 full payments instead of 12.
Usually yes, if it costs nothing and extra payments go straight to principal.
Some do. The CFPB sued one company over setup fees of up to $995 plus yearly fees.
Yes. Add 1/12 of your payment to each monthly payment, or make one extra payment a year.
Not always. Ask your servicer how they handle partial and extra payments.
No. It covers principal and interest only.
No. Twice a month is 24 half payments, the same as 12 monthly payments, so it saves almost nothing.
It depends on your rate and goals; paying a 7% mortgage is a guaranteed 7% return.
Yes, if you do it yourself. Programs may have cancellation terms.
References & Sources
| Source | Used For | Link |
|---|---|---|
| Consumer Financial Protection Bureau, CFPB files suit against Nationwide Biweekly for luring consumers with false promises of mortgage savings | Biweekly program setup and processing fees. | https://www.consumerfinance.gov/about-us/newsroom/cfpb-files-suit-against-nationwide-biweekly-for-luring-consumers-with-false-promises-of-mortgage-savings/ |