Mortgage & real estate

Biweekly Mortgage Calculator

Paying half your monthly amount every two weeks adds up to one extra payment a year - see how much faster the loan clears and how much interest you save.

  • Free
  • No sign-up
  • Updated for 2026

Mortgage details

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Enter your loan amount, rate and term to see the biweekly payment.

Worked example

With these example inputs:

  • Loan amount$360,000
  • Interest rate6.5%
  • Term (years)30

Biweekly payment: $1,138

  • Standard monthly payment$2,275
  • Total interest$354,453
  • Payoff time24 yr 2 mo
  • Interest saved$104,708
  • Time saved5 yr 10 mo

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What this biweekly mortgage calculator does

This calculator shows the effect of biweekly payments. You enter the loan, the rate and the term. The tool compares biweekly with monthly. It shows the interest you save. It also shows the time you save. You can see the payoff date move sooner. The result reveals a simple way to save.

How biweekly payments work

You pay half your monthly amount every two weeks. There are fifty-two weeks in a year. That means twenty-six half-payments. Together they equal thirteen monthly payments. So you make one extra payment a year. This happens almost without you noticing. The small shift adds up over time.

The hidden extra payment

The magic is that extra payment each year. A normal year has twelve monthly payments. Biweekly gives you the value of thirteen. That extra payment goes to the principal. It lowers your balance faster than planned. Less balance means less future interest. This is the engine of the savings.

Interest saved over the loan

The extra payment cuts your total interest. Each year you owe a little less. So less interest builds up over time. On a long loan the saving is large. It can reach a substantial sum. The calculator shows your exact figure. Small steps lead to big results.

Time saved off the term

Biweekly payments also shorten the term. The loan ends earlier than its schedule. You could be free years ahead. This frees up money sooner. It also means fewer payments overall. The exact time saved depends on your loan. The tool shows your new payoff date.

Biweekly versus monthly

A monthly plan is simple and familiar. It needs twelve payments a year. A biweekly plan needs twenty-six half-payments. The biweekly path pays a bit more yearly. In return it saves interest and time. The choice depends on your budget rhythm. Both can work with good planning.

How to use it

Enter the loan amount and rate. Add the term in years. Read your monthly and biweekly payments. See the interest and time saved. Then compare the two payoff dates. Decide if the faster plan fits. Use it to plan an earlier payoff.

Setting up biweekly payments

Ask your lender if they allow biweekly. Some apply each half-payment right away. Others hold it until a full month. The timing affects how much you save. Make sure extra goes to principal. Confirm there are no setup fees. Read the terms before you start.

Alternatives to biweekly

You do not strictly need a biweekly plan. You can simply pay a little extra monthly. One extra payment a year does the same. This keeps you in full control. It also avoids any lender fees. The result can match a biweekly plan. Choose the method that suits you.

Common mistakes to avoid

A common mistake is assuming the lender applies it well. Some hold the money with no benefit. Another is paying a fee for the service. You can often do it yourself free. Some forget to send extra to principal. Others stretch the budget too far. A careful setup avoids these traps.

A final tip

Use biweekly payments to save quietly. Confirm your lender applies them right. Make sure extra reduces the principal. Or just add a little extra each month. Keep an emergency fund in place. Review the plan as your income changes. Small, steady extra payments win over time.

Frequently asked questions

How does a biweekly mortgage work?

You pay half the monthly amount every two weeks. With 26 half-payments a year, you make the equivalent of 13 monthly payments instead of 12, putting one extra payment toward principal annually.

How much can biweekly payments save?

On a $360,000 loan at 6.5% over 30 years, the biweekly schedule can clear the loan around six years early and save over $100,000 in interest.