A 30-year mortgage usually has a lower monthly payment than a 15-year mortgage because the loan balance is repaid over twice as many years. A 15-year mortgage requires a higher monthly payment, but it can cut total interest significantly if the borrower keeps the loan for its full term.

15-Year vs. 30-Year Mortgage: How Monthly Payments Compare

Loan term directly shapes the principal-and-interest payment. A 15-year loan repays the balance in 180 monthly payments. A 30-year loan spreads the same balance across 360.

That longer schedule is why a 30-year loan carries a smaller payment, even at a higher interest rate. The 15-year term compresses repayment into half the time, so more principal is due each month.

When deciding how much payment fits a budget, compare the mortgage against the full monthly cost of homeownership, not principal and interest alone.

15-Year vs. 30-Year Mortgage Rate Example

As of September 3, 2026, the national average rate was 6.04% for a 15-year fixed mortgage and 6.71% for a 30-year fixed mortgage. These are national survey averages, not rates guaranteed to individual borrowers.

Actual mortgage rates vary based on credit profile, loan amount, down payment, property type, lender, points and other factors. Rates also change week to week, so current lender quotes matter more than a national average once a buyer is ready to apply.

Because even a small rate change affects the payment, it helps to understand how interest rates affect home prices and affordability when setting a purchase budget.

15-Year vs. 30-Year Mortgage at a Glance

Monthly principal and interest

15-year fixed at 6.04%$2,707

30-year fixed at 6.71%$2,067

About $640 more per month with the 15-year term

Total interest if held to term

15-year fixed$167,307

30-year fixed$424,125

About $256,800 less interest with the 15-year term

Why a 15-Year Mortgage Usually Costs More Each Month

A 15-year mortgage costs more each month because the same loan balance must be repaid in 180 payments instead of 360. Each payment covers a larger share of principal, even when the 15-year rate is lower. In the $320,000 example, about $1,096 of the first 15-year payment goes toward principal, compared with about $278 of the first 30-year payment.

That higher payment reduces monthly flexibility. A buyer who qualifies for the 15-year payment still needs to account for other debts, savings goals, repairs, utilities and everyday expenses. A useful starting point is to estimate how much house you can afford before comparing mortgage terms.

Why a 30-Year Mortgage Usually Costs More in Total Interest

A 30-year mortgage usually costs more in total interest because the balance stays outstanding longer. The payment is lower, but interest accrues across twice as many payments. In the early years, most of each 30-year payment goes toward interest rather than principal.

That does not make the 30-year term the more expensive choice for every borrower. Many homeowners sell or refinance before the original term ends. What a borrower actually pays depends on how long the loan stays in place, the rate, fees and any extra principal payments.

15-Year Fixed vs. 30-Year Fixed: What Are You Trading Off?

The core trade-off is monthly flexibility versus faster repayment. A 15-year fixed mortgage commits more of the household budget to the mortgage, but the balance falls faster. A 30-year fixed mortgage lowers the payment and frees up room in the monthly budget, but total interest runs higher over the full term.

With either fixed-rate term, the principal-and-interest payment stays the same for the life of the loan. The total housing payment can still rise because property taxes, homeowners insurance, HOA charges or other costs may change. Those added expenses are one reason buyers should budget for the first year of homeownership rather than focusing only on the mortgage payment.

How to Choose a Mortgage Term Length: 15 vs. 30 Year

Start with a payment that fits without squeezing the rest of the budget. Then compare actual lender quotes for both terms. The shorter term is not automatically the better choice if the payment leaves too little room for savings or surprise costs.

Compare the Required Monthly Payments

Compare principal and interest for both terms, then add property taxes, homeowners insurance, mortgage insurance when applicable and HOA fees. The goal is a clear view of the total monthly housing cost under each option.

Compare Total Interest and Loan Costs

Look beyond the advertised rate. Compare total interest, lender fees, points and closing costs. A Loan Estimate from each lender makes offers easier to compare side by side. Include closing costs when calculating how much cash the purchase will require.

Think About How Long You May Keep the Loan

Full-term interest totals assume the mortgage stays in place for 15 or 30 years. Buyers who expect to sell or refinance earlier can ask the lender to compare the projected balance and costs over the period that matters most.

Leave Room for Savings and Unexpected Costs

A mortgage payment should not absorb every available dollar in the monthly budget. Home repairs, insurance increases, property tax changes and other expenses can surface after closing. The lower payment on a 30-year mortgage offers breathing room, while some borrowers prefer the faster payoff of a 15-year loan.

Getting a mortgage preapproval helps define the price range and loan amount before comparing specific homes.