15-Year vs 30-Year Mortgage 2026

Banks, credit unions, and mortgage lenders

15-Year Fixed Mortgage

Pay off faster, build equity faster, pay significantly less in total interest.

• Rate advantage: 0.5–0.75% lower than 30-yr
• Monthly payment: ~40% higher than 30-yr equivalent
• Total interest: ~55% less than 30-yr
• Equity buildup: Significantly faster

Pros

• Dramatically less total interest over the life of the loan
• Lower interest rate — typically 0.5–0.75% below 30-year
• Faster equity buildup — paid off in half the time
• Debt-free sooner — often by retirement age for mid-career buyers

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Banks, credit unions, and mortgage lenders

30-Year Fixed Mortgage

Lower monthly payment, maximum flexibility — the most common US mortgage.

• Monthly payment: ~40% lower than 15-yr equivalent
• Total interest: ~2x more than 15-yr
• Rate: 0.5–0.75% higher than 15-yr
• Flexibility: Highest

Pros

• Lower monthly payment — preserves cash flow for other priorities
• Option to make extra payments: you can pay it off faster voluntarily but aren't required to
• Most common product — widest availability, most competition on rates
• Flexibility for variable-income borrowers: lower required payment = smaller minimum obligation

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Term, payment size, and total interest paid. A 15-year mortgage has higher monthly payments but a significantly lower interest rate (typically 0.5–0.75% lower than a 30-year) and builds equity and achieves payoff in half the time. A 30-year mortgage has lower monthly payments, providing more cash flow flexibility, but you pay more total interest over the life of the loan — often more than the original purchase price in interest alone on a large mortgage. Source: Federal Reserve mortgage rate data at federalreserve.gov.

On a $400,000 loan at illustrative rates of 6.5% (30-year) vs 5.9% (15-year): the 30-year total interest cost is approximately $510,000; the 15-year total is approximately $200,000 — a difference of roughly $310,000. Your actual numbers depend on the rates available to you, which are determined by lender underwriting on your specific file. The CFPB's mortgage calculator at consumerfinance.gov can illustrate the math for your scenario.

Not necessarily — the decision depends on your cash flow, other financial priorities, and the opportunity cost of the higher payment. If making the higher 15-year payment leaves no room for retirement contributions, emergency savings, or investment, a 30-year mortgage with disciplined extra principal payments may produce better overall financial outcomes. The 30-year also provides a lower required minimum payment as a safety net during income disruptions. Neither is universally optimal.

Yes — most 30-year mortgages have no prepayment penalty. By making additional principal payments each month, you can dramatically shorten the payoff timeline. The advantage over a 15-year mortgage is optionality: in tight months, you pay only the required 30-year payment; in good months, you add extra. The 30-year with extra payments won't achieve exactly the same total interest cost as a 15-year (since the 15-year's lower rate compounds in its favor), but the difference may be worth the flexibility for many borrowers.