CapCenter

30-year vs. 15-year refinance: total cost compared

A 15-year refinance costs far less in total interest, but the monthly payment is much higher. Here is how the two terms compare on a $300,000 loan, and how to choose the one your budget can carry.

Key takeaways

  • A 15-year refinance usually saves a large amount of interest over the life of the loan.
  • The trade-off is a much higher monthly payment.
  • A 20-year term, or a 30-year loan with extra principal payments, can split the difference.
  • Choose the payment you can keep making in a tight month, not just in a good one.

Next step: See how much refinancing could save you

The basic trade-off

When you refinance, you choose how long the new loan will last. A 30-year term spreads the balance over 360 payments, so each payment is smaller. A 15-year term squeezes it into 180 payments, so each payment is larger, but far less interest builds up along the way.

Shorter terms also tend to come with lower interest rates than 30-year loans, which widens the gap in total cost even further.

A side-by-side example on $300,000

Hypothetical example, principal and interest only. APR may differ; example only. Rates change daily.

  • 30-year at 6.75%: about $1,946 a month, and about $400,486 in total interest.
  • 15-year at 6%: about $2,532 a month, and about $155,683 in total interest.
  • Difference: about $586 more a month for the 15-year, and roughly $244,800 less interest over the life of the loan.

Example details: $300,000 30-year fixed at 6.750% (6.778% APR): 360 monthly payments of $1,945.79; $300,000 15-year fixed at 6.000% (6.039% APR): 180 monthly payments of $2,531.57. Principal and interest only; taxes and insurance not included, so the actual payment will be higher. Unless noted, APR assumes ZERO Closing Costs, no discount points and 15 days of prepaid interest. Hypothetical example prepared November 4, 2026, not a current CapCenter rate offer; subject to credit approval.

Why the 15-year builds equity faster

On a 30-year loan, most of each early payment goes to interest. On a 15-year loan, a much larger share goes to principal from the start. That means your balance falls faster and your equity grows sooner.

More equity can matter later. It gives you more room if you ever want to borrow against your home, and more cushion if home prices dip.

Why the 30-year still makes sense for many people

A lower required payment gives you breathing room. If income changes, a big expense comes up, or you want to keep saving for retirement or college, a smaller payment is easier to hold.

You can also pay a 30-year loan down faster on your own. Extra principal payments shorten the loan and cut interest, but you can stop if money gets tight. Check with your servicer on how to send extra principal.

Middle options

You don't have to pick only 15 or 30 years. CapCenter offers fixed-rate terms of 30, 25, 20, 15 and 10 years. A 20-year loan, for example, often lands between the two in both payment and total interest. A loan consultant can price several terms side by side.

How to choose

  • Start with a monthly payment you're comfortable with, including taxes and insurance.
  • Keep an emergency fund after the new payment, not just before it.
  • Think about how long you plan to stay in the home.
  • Consider your other goals, such as retirement savings or paying off higher-rate debt.
  • Compare the total interest for each term, not only the rate.

What it costs to switch terms

Closing costs can make a refinance take years to pay off. CapCenter refinances come with ZERO Closing Costs (restrictions apply), so there are no lender closing costs to earn back whichever term you choose. You still pay items such as escrow deposits and prepaid interest; see Offer details.

Frequently asked questions

Which term saves more money overall?

Usually the 15-year, because you pay interest for half as long and often at a lower rate. The catch is the higher payment.

Is the 15-year rate lower than the 30-year rate?

Usually, though the gap changes with the market. Compare current rates for both terms before you decide.

Which builds equity faster?

The 15-year, by a wide margin. More of each payment goes to principal from the first month.

Can I switch terms later?

You can refinance again if you qualify. Rates and your situation at that time will decide whether it makes sense.

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

Often, yes, by paying extra toward principal. Your rate is typically higher than a 15-year rate, so total interest is usually still somewhat higher.

Do these payments include taxes and insurance?

No. The examples show principal and interest only. Your full payment may also include escrow for taxes and insurance.

Examples are hypothetical and for illustration only, not an offer of credit. Payments shown are principal and interest only, exclude taxes and insurance, and your APR may differ. Rates change daily. For general information only. Program rules and limits vary. Not a commitment to lend. NMLS ID #67717.

See your refinance savings

Capping costs since 1997.