The free Insider mortgage calculator shows how much you’ll pay each month based on your home price, down payment, term length, and interest rate. We also provide customized tips on how to save money on your mortgage.
How to calculate a mortgage payment
Are you wondering how our mortgage calculator comes up with your monthly payment? You can calculate your monthly mortgage payment (excluding property taxes and insurance) using the following equation:
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The principal is the amount you borrow to buy your home. For example, if you want to buy a $400,000 home and have $50,000 for a down payment, you’ll need to borrow $350,000. Your loan principal is $350,000.
The monthly interest rate is different than the interest rate you see on your mortgage documents. The lender provides the yearly interest rate, so divide that rate by 12 for this equation. If your interest rate is 4.25%, divide 0.0425 by 12 to find your monthly rate: 0.00354166%.
To find the number of months required to repay the loan, multiply the number of years by 12. If you have a 30-year mortgage, multiply 30 by 12 to get 360 months.
Once you calculate M (monthly mortgage payment), you can add in the monthly property tax and homeowners insurance payment. If you don’t already have these numbers but want to get an idea of what you’ll pay total every month, see the average property taxes in your state here and the average cost of homeowners insurance by state and home value here.
How a mortgage calculator can help
You’ve entered numbers into the mortgage calculator – so what can you do with this information?
- Determine how much house you can afford. With our mortgage calculator, you can enter how much you want to spend on a home and the amount you have for a down payment. Together, these numbers reveal how much you need to borrow. If you realize that the monthly payments are too high to live comfortably, you may decide that you need to buy a less expensive home.
- See how much more you need to save. The calculator also shows how a higher or lower down payment will affect your monthly mortgage payments, plus the total amount you’ll pay over the years.
- Choose a term length. Input a few term lengths to figure out which one best fits your budget. With a 30-year term, your monthly payments will be lower, but you’ll pay more in the long run since you’re spreading payments out over a longer period of time. A 15-year term will give you a higher monthly payment but cost less over the years. Play around with term lengths and think about which one best suits your goals.
- Find out how your interest rate affects payments. Maybe you’ve been prequalified by a few lenders. Use the calculator to compare how each company’s interest rate would affect your monthly and long-term payments. This tool can help you on your journey to choosing a lender.
- Learn how to save money. Once you’ve entered your numbers, we provide a few suggestions on how you can either lower your monthly payments or save in the long term.
How to lower your monthly mortgage payment
You don’t want a high mortgage payment that will cause financial distress. There are several ways to lower your monthly payment:
- Make a larger down payment. The higher your down payment, the less you’ll need to borrow.
- Buy a less expensive home. If saving more for a down payment isn’t feasible, you may want to buy a home that costs less. This is another way to borrow less money with a mortgage.
- Improve your interest rate. You’ll pay less with a lower interest rate, both on your monthly payments and in the long run. Shop around for lenders and apply for prequalification and preapproval with several to compare interest rates. You can also take steps like increasing your credit score or paying down debts to get a better rate.
- Choose a longer term. The longer your term length, the lower your monthly payment will be. Keep in mind that longer terms cost more over the years, though. A 30-year term costs more in the long term than a 15-year term, because you’re stretching out payments over a longer period of time and paying interest for longer.
A mortgage calculator can help you see all of your options for buying a home and choose the terms that best fit your situation.
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