FreeCalculators

Biweekly vs Monthly Payment Calculator

Calculate the benefits of biweekly mortgage payments and find out how much you can save on interest and time with our easy-to-use tool.

Loans & Mortgage · Reviewed by FreeCalculators Editorial · Updated 2026-08-20

How it works

The Biweekly vs Monthly Payment Calculator helps you understand the financial benefits of making biweekly mortgage payments instead of monthly payments. When you opt for biweekly payments, you make half of your monthly mortgage payment every two weeks. This results in 26 half-payments each year, which is equivalent to 13 full monthly payments. This extra payment reduces your principal balance faster, leading to lower interest costs over the life of the loan. For example, with a loan balance of $300,000 at an interest rate of 6.5% over 30 years, making biweekly payments can save you significant time and money. If you input these values, the calculator will show how many months you can save, the new monthly and biweekly payoff amounts, and the total interest paid in both scenarios. By paying biweekly, you can potentially save thousands in interest and pay off your mortgage years earlier than with traditional monthly payments.

Formula


                26 half-payments = 13 monthly payments | The 13th payment reduces principal directly
              

Tips

  • Consider rounding up your biweekly payments to further reduce your principal and interest costs.
  • Check if your lender allows biweekly payments without penalties to maximize savings.
  • Use the calculator to compare different interest rates and terms to find the best option for your financial situation.
  • Set up automatic payments to ensure you never miss a biweekly payment and stay on track.

Frequently asked questions

How much interest can I save by switching to biweekly payments?
Using the calculator with a $300,000 balance at 6.5% over 30 years, you could save approximately $60,000 in interest.
How many months will I save on my mortgage?
With biweekly payments, you could save around 60 months or 5 years off your mortgage term.
What is the difference between biweekly and monthly payments?
Biweekly payments consist of 26 half-payments per year, while monthly payments consist of 12 full payments, resulting in one extra payment annually.
Can I switch to biweekly payments anytime?
Yes, you can typically switch to biweekly payments at any time, but confirm with your lender about their specific policies.