15-Year vs 30-Year Mortgage

The choice between a 15-year and a 30-year mortgage is a trade-off between monthly cash flow and lifetime cost. A 15-year loan has a higher monthly payment but a lower interest rate and far less total interest, and you build equity and own the home in half the time. A 30-year loan has a lower, more flexible monthly payment but costs much more in total interest over the life of the loan.

Both are fixed-rate mortgages; the difference is the repayment term, and that one variable changes almost everything about the loan's cost and cash flow. MONTHLY PAYMENT: the 30-year wins. Spreading principal over 360 payments instead of 180 makes each payment meaningfully smaller, which is why most buyers choose it — it qualifies you for more house and leaves room in the budget. The 15-year payment is substantially higher (not double, because of interest, but a large jump). INTEREST RATE: the 15-year usually wins. Lenders typically price 15-year fixed rates below 30-year fixed rates — often by roughly half a percentage point — because the loan is repaid faster and carries less risk. Current average rates for both terms are published weekly in Freddie Mac's Primary Mortgage Market Survey (https://www.freddiemac.com/pmms). TOTAL INTEREST: the 15-year wins by a wide margin — a lower rate AND half the number of years means you can pay a fraction of the lifetime interest of a 30-year loan on the same balance. EQUITY & PAYOFF: the 15-year builds equity much faster and is paid off in half the time, which appeals to buyers who want to be debt-free sooner or are closer to retirement. The 30-year builds equity slowly in the early years because more of each payment goes to interest. FLEXIBILITY: the 30-year's lower required payment is itself a feature — you can choose to pay extra toward principal in good months (a 'pay a 30 like a 15' strategy) and fall back to the lower payment when cash is tight, getting some of the 15-year's payoff speed without locking into its higher mandatory payment. The 15-year gives up that flexibility. General guidance on comparing mortgage terms and shopping multiple lenders is published by the Consumer Financial Protection Bureau (https://www.consumerfinance.gov/owning-a-home/). ClearValue Lending is a financial-decisions platform, not a lender — your actual rate and terms come from the lender after you apply.

Examples

  • On a $300,000 loan, a 15-year term carries a higher monthly payment than a 30-year but can save six figures in total interest over the life of the loan
  • A buyer who wants flexibility takes the 30-year, then makes extra principal payments in strong months to shorten the effective payoff
  • A borrower 15 years from retirement chooses the 15-year so the home is owned free and clear before their income drops

Frequently asked questions

Is a 15-year or 30-year mortgage better?

Neither is universally better — it's a trade-off. Choose the 15-year if you can comfortably afford the higher payment and want to minimize total interest and own the home sooner. Choose the 30-year if you want a lower, more flexible monthly payment or need it to qualify; you can still pay extra toward principal to shorten the payoff.

Why is the rate lower on a 15-year mortgage?

Lenders generally price 15-year fixed rates below 30-year fixed rates — often by around half a percentage point — because the loan is repaid faster and represents less interest-rate and default risk over time. Freddie Mac's weekly survey tracks the gap between the two.

Can I pay off a 30-year mortgage in 15 years?

Yes. As long as your loan has no prepayment penalty (most don't), you can make extra principal payments on a 30-year loan to pay it off faster. You'll keep the 30-year's lower required payment as a safety net, though your rate will be the (typically higher) 30-year rate rather than the 15-year rate.

Related terms

Further reading

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