How much more is a 15-year mortgage payment?

It varies with the rate and loan amount, but the principal-and-interest payment is often 20–40% higher than the 30-year payment for the same loan, because the principal is repaid in half the time — partly offset by 15-year rates being somewhat lower.

Can I get a 15-year loan and pay it off even faster?

Yes. A shorter term already accelerates principal, and additional principal payments can shorten it further. Check the lender's prepayment terms to confirm there's no penalty.

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

Yes, by making additional principal payments. Many borrowers do this on their own schedule. The advantage of voluntarily paying extra is flexibility: if cash gets tight, you can return to the lower required payment.

Does a 30-year loan help with cash flow?

Yes. The lower required payment frees up cash for reserves, investing, or unexpected expenses. Some investors deliberately take the longer term and put the difference toward other assets.

Are 15-year rates always lower than 30-year rates?

Usually somewhat lower, because the lender assumes less duration risk, but the gap varies by market. Ask for both quotes at your numbers.

Which is better for an investment property?

For cash-flow-focused investors, a 30-year loan often preserves cash flow and allows leverage. For investors prioritizing debt reduction, a shorter amortization can make sense. The property's cash flow should handle the payment either way.

Can I switch mortgage terms later?

Yes, through a refinance — but refinancing has costs and depends on rates, equity and credit at the time. It's usually better to choose the term that fits your plan than to rely on refinancing later.

Loan Term Comparison · 2026

How 15-Year and 30-Year Mortgages Compare Over Time

The 15-year saves interest and builds equity faster. The 30-year keeps your monthly cash free. The gap between them isn't just money — it's flexibility.

By Saman Khanian

Mortgage Professional

9 min read

Apply Now (877) 885-0111

Couple reviewing a long-term household budget at their kitchen counter

Fifteen years or thirty — both are decisions

The short answer

The 15-year saves interest. The 30-year buys flexibility.

A 15-year loan forces you to pay more principal each month — and that higher payment is exactly why it saves so much interest. You retire the debt in half the time at a rate that's often mildly lower.

A 30-year loan spreads the same principal over twice the time, which lowers the required payment. The extra cash remains yours — for reserves, investing, repairs, or simply room to breathe.

The real comparison isn't "which costs less." It's "which monthly obligation does my budget support without taking away everything else?" A 15-year that exhausts your reserves isn't a win. A 30-year used well can be more than a way to pay less — it's optionality.

The math

The same loan, two terms, one very different outcome

A $400,000 loan with a 6.00% 15-year rate versus a 6.50% 30-year rate. Illustrative rates only — your quote will differ.

Metric

15-year

30-year

Loan amount

15-year: $400,000

30-year: $400,000

Interest rate (example)

15-year: 6.00%

30-year: 6.50%

Monthly payment (P&I)

15-year: $3,375

30-year: $2,528

Total interest over term

15-year: $207,577

30-year: $510,178

Total paid over term

15-year: $607,577

30-year: $910,178

Debt-free in

15-year: 15 years

30-year: 30 years

Higher monthly payment

+$847

on the 15-year

Interest saved

$302,601

over the life of the loan

Faster to debt-free

15 years

against the 30-year term

Illustrative only, assuming no extra payments, taxes or insurance included. Your actual numbers depend on the rate, loan amount and terms you're offered.

Over time

How the two loans diverge year by year

Both loans are front-loaded with interest. The difference is the pace — a 15-year loan forces you to chip away at principal far faster.

Year 1

15-year: More principal, less interest

30-year: Mostly interest at first

Year 5

15-year: About a third of the loan repaid

30-year: Only a small share of principal retired

Year 10

15-year: Two-thirds done

30-year: Roughly a quarter repaid

Year 15

15-year: Debt-free

30-year: Still paying for 15 more years

Years 16–30

15-year: No mortgage payment

30-year: Continuing payments and interest

The equity effect

A 15-year loan builds equity faster, which can open up lower rates on later loans and less risk if the market falls. A 30-year loan builds equity more slowly but keeps you liquid — and liquidity can matter more than speed when life changes.

Apply Now

Which fits you

The payment is the test — not the interest savings

A shorter term is only a good decision if you can sustain the payment through a bad year. Otherwise, the longer term plus extra payments gives you both options.

A 15-year often fits if…

The higher payment fits within about 25–30% of take-home pay
Your emergency fund and retirement contributions stay intact
You plan to stay in the home long enough to benefit
You value being debt-free and building equity quickly
You're in a stable phase of life with predictable income

A 30-year often fits if…

The 15-year payment would squeeze your budget
You want reserves for repairs, job changes or opportunities
You're prioritizing investing or saving elsewhere
Your income is variable or expected to change
You'd rather have the option to pay extra — not the obligation

Flexibility

The 30-year is a 15-year you can choose when to stop

You can always pay a 30-year loan down faster. You can never pay the required amount on a 15-year loan slower. That asymmetry is the heart of the debate.

The 30-year + extra payments approach

Required payment stays lower if cash gets tight
You direct extra money to principal whenever you choose
Keeps reserves and investing options open
Does not claw back the savings of a dedicated 15-year

When the 15-year rewards itself

You have a stable income and can sustain the payment
You value being debt-free sooner
Lower 15-year rates reduce cost over time
Equity builds faster, useful for future flexibility
No further investment discipline required

Costs & trade-offs

What each term gives — and costs

Every loan term is a trade. Neither is a failure of discipline if it fits your life.

What each can offer

15-year: far less total interest
15-year: equity builds much faster
15-year: debt-free in half the time
30-year: lower required monthly payment
30-year: cash stays available for reserves and investing
30-year: optional extra payments give control

What can go wrong

15-year: higher monthly payment and tighter budget
15-year: less liquidity if income dips
15-year: may require forgoing other savings
30-year: much more interest over the full term
30-year: slower equity build
30-year: temptation to under-pay principal

Apply Now

The first question is affordability, not interest. If a 15-year payment would leave you with no emergency fund, the interest saved on paper is not the bigger number.

Frequently asked questions

What borrowers ask us most about loan terms.

No. A 15-year loan typically saves a large amount of interest and builds equity faster, but the monthly payment is substantially higher. Whether it's better depends on whether you can afford that payment without compromising reserves, retirement savings or other financial goals.

Written by

Saman Khanian

Mortgage professional at Equitable Lending, helping buyers choose loan terms that fit their budgets across Los Angeles and nationwide.

See both terms at your real numbers.

Tell us the loan amount and what your budget can handle. We'll show you the 15-year and 30-year payments side by side — and what each one means over time.