15-Year vs. 30-Year Mortgage: Which Is Right for You?

You’re ready to buy a home. You’ve saved for a down payment, you’ve checked your credit, and now you’re staring at the loan term options: 15 years or 30 years? One saves you a fortune in interest. The other gives you breathing room in your monthly budget. Let’s break down the real numbers so you can make the right choice for your life.

The Core Difference, Explained Simply

Both are fixed-rate mortgages, meaning your interest rate never changes. The only difference is the repayment timeline.

30-Year Mortgage: You spread payments over 360 months. Monthly payments are lower, but you pay more total interest.
15-Year Mortgage: You pay off the loan in 180 months. Monthly payments are higher, but you pay far less interest over time.

Head-to-Head Comparison: $350,000 Loan at 6.5% APR

Let’s look at a realistic scenario. Assume a $350,000 home with 20% down ($70,000), leaving a $280,000 loan.

Factor	30-Year Fixed	15-Year Fixed
Monthly Principal & Interest	$1,770	$2,439
Total Interest Paid	$357,000	$159,000
Total Cost of Loan	$637,000	$439,000

The trade-off is clear: The 15-year loan costs you about $670 more per month but saves you nearly $200,000 in interest over the life of the loan.

🏠 See Your Personal Numbers

The example above is a starting point. Use our free mortgage calculator to plug in your specific home price, down payment, and interest rate. Toggle between 15 and 30 years to see the difference instantly.

Try the Mortgage Payment Calculator →

When a 30-Year Mortgage Makes Sense

You want to maximize your monthly cash flow. Lower payments mean more room in your budget for investing, travel, or childcare.
You’re early in your career. Your income is likely to grow. You can always refinance or make extra payments later.
You plan to invest the difference. If you invest the $670 monthly savings and earn an average 7% annual return, you could accumulate over $800,000 in 30 years—potentially beating the interest savings of a 15-year loan.
You need a lower debt-to-income ratio to qualify. The lower payment makes it easier to get approved.

When a 15-Year Mortgage Makes Sense

You want to be debt-free faster. There’s immense psychological freedom in owning your home outright before retirement.
You have stable, predictable income. You’re confident you can handle the higher payment even if unexpected expenses arise.
You’re nearing retirement. Entering retirement with no mortgage payment significantly reduces your required monthly income.
You struggle to save or invest consistently. A 15-year mortgage forces discipline—it’s like a forced savings plan with a guaranteed return (the interest you avoid).

The “Hybrid” Strategy: Get a 30-Year and Pay It Like a 15-Year

This is a popular middle ground. You take the 30-year loan for the lower required payment (giving you flexibility), but you voluntarily pay extra each month to pay it off in 15 years.

Pros: If you lose your job or face an emergency, you can drop back to the lower 30-year payment without refinancing.
Cons: 30-year loans typically have slightly higher interest rates (about 0.25%–0.5% higher) than 15-year loans, so you’ll pay a bit more interest even if you pay it off early. Also, you must have the discipline to actually make those extra payments.

Frequently Asked Questions

Can I refinance from a 30-year to a 15-year later?

Yes. Many homeowners start with a 30-year loan for flexibility and refinance to a 15-year term once their income grows or rates drop. Just factor in closing costs (typically 2–5% of the loan amount).

What about a 20-year or 10-year mortgage?

These exist but are less common. A 20-year mortgage splits the difference. Our calculator currently focuses on 15- and 30-year terms, which represent over 90% of mortgages originated.

Does the interest rate difference matter that much?

Yes. 15-year loans typically offer rates 0.25%–0.5% lower. On a $280,000 loan, that 0.5% difference saves about $1,400 in the first year alone.

Should I pay off my mortgage early if I have other debt?

Generally, no. Pay off high-interest debt (credit cards, personal loans) first. A mortgage at 6.5% is cheap compared to a credit card at 22%. Use our Credit Card Payoff Calculator to see where your extra cash makes the biggest impact.

The Bottom Line

There’s no universally “right” answer. The 15-year mortgage saves you a mountain of interest and gets you debt-free faster. The 30-year mortgage gives you flexibility and cash flow. Your decision should hinge on your income stability, your other financial goals, and your personal comfort with debt.

Start by running your numbers through our Mortgage Payment Calculator. Seeing the monthly difference and total interest cost for your situation will make the choice much clearer.