Homebuyer Guides — Loan Terms

15-Year vs 30-Year Mortgage: Which Should You Choose?

One of the biggest decisions you’ll make when getting a mortgage isn’t just which lender to use — it’s choosing between a 15-year and 30-year loan term. Both are popular fixed-rate options, but they lead to very different monthly payments, total interest costs, and long-term financial outcomes. Here’s how to think through the choice.

The Core Trade-Off

A 15-year mortgage pays off your loan in half the time of a 30-year mortgage, which means higher monthly payments but significantly less total interest paid. A 30-year mortgage spreads the same loan amount over twice as long, resulting in lower monthly payments but a much larger total interest bill by the time the loan is paid off.

Side-by-Side Example

Consider a $320,000 loan. Here’s how the two terms compare at typical rates (note that 15-year loans usually carry a somewhat lower interest rate than 30-year loans):

Loan Term	Interest Rate	Monthly P&I	Total Interest Paid
15-Year	5.85%	~$2,675	~$161,500
30-Year	6.50%	~$2,022	~$407,900

In this example, the 15-year loan costs about $650 more per month, but saves roughly $246,000 in interest over the life of the loan. That’s the fundamental trade-off: cash flow today versus total cost over time.

Reasons to Choose a 15-Year Mortgage

You want to minimize total interest paid. Because you’re paying down principal faster and the loan carries a lower rate, total interest costs drop dramatically.
You’re comfortable with a higher monthly payment. Your income and budget can absorb the larger payment without straining other financial goals.
You want to build equity faster. More of each payment goes toward principal from day one, accelerating how quickly you own your home outright.
You’re planning for a debt-free retirement. Many borrowers choose 15-year terms specifically to have their mortgage paid off well before retirement age.

Reasons to Choose a 30-Year Mortgage

You want lower, more manageable monthly payments. This frees up cash flow for other financial priorities — investing, saving, or covering other expenses.
You want more flexibility. A lower required payment gives you breathing room during unexpected financial changes, like a job transition or medical expense.
You’d rather invest the difference. Some borrowers choose a 30-year term and invest the payment difference elsewhere, betting that investment returns will outpace the extra mortgage interest — though this involves market risk.
You want to make optional extra payments. A 30-year loan gives you the flexibility to pay it down faster in good months, without being locked into a higher required payment every month.

A Middle-Ground Strategy: 30-Year Loan with Extra Payments

Many borrowers choose a hybrid approach — taking a 30-year loan for payment flexibility, but voluntarily making extra principal payments when possible. This approach lets you pay off the loan faster and save on interest, similar to a 15-year loan, while keeping the lower required payment as a safety net during tighter months.

The catch is discipline: this strategy only works if you consistently follow through on extra payments rather than treating the lower required payment as “extra” spending money.

Want to see exactly how extra payments affect your specific loan? Try our Amortization Calculator, which lets you add a custom extra monthly payment and instantly see the new payoff timeline and interest savings.

Other Term Options Worth Knowing

While 15-year and 30-year terms are the most common, some lenders offer 20-year and 10-year fixed terms as well, which split the difference between monthly payment size and total interest cost. If neither the 15-year nor 30-year option feels right, it’s worth asking your lender about these alternatives.

How to Decide

There’s no universally “correct” choice — it depends on your specific financial situation:

If a 15-year payment fits comfortably into your budget without straining other goals (retirement savings, emergency fund, other debts), it can be a smart way to save significantly on interest.
If a 15-year payment would stretch your budget thin, a 30-year term with the option to pay extra when possible often provides a safer balance of flexibility and long-term savings.

Running both scenarios through a mortgage calculator side by side — comparing monthly payment, total interest, and how your budget handles each — is the most reliable way to make this decision with confidence.

This article is for general informational and educational purposes only and does not constitute financial or lending advice. Rates and terms vary by lender and borrower profile. Consult a licensed mortgage professional for guidance specific to your situation.