By Mike Basti, President and Mortgage Broker · NMLS #322904A 15-year mortgage has a lower rate and builds equity fast, saving huge interest — but the monthly payment is much higher. A 30-year mortgage has a higher rate and total interest, but a far lower, more flexible payment. Choose 15-year if you can comfortably afford the payment and want to be debt-free sooner; choose 30-year for lower payments, flexibility, and cash flow.
On a $600,000 loan at example rates of 6.7% for 30-year and 6.0% for 15-year (illustrations, not quotes), the trade-off looks like this:
| 30-Year @ 6.7% (example) | 15-Year @ 6.0% (example) | |
|---|---|---|
| Monthly principal & interest | ~$3,870 | ~$5,065 |
| Total interest paid | ~$793,000 | ~$311,000 |
| Payoff | 30 years | 15 years |
The 15-year costs about $1,200 more per month but saves roughly $480,000 in interest and frees you 15 years sooner. (Figures are illustrative — run your own with our payment calculator.)
When a 15-year wins
- You can comfortably afford the higher payment with room to spare.
- You want to own free-and-clear sooner — near retirement, or to stop paying interest.
- You value guaranteed, risk-free "return" from interest saved.
When a 30-year wins
- You want the lowest required payment and maximum cash-flow flexibility.
- You’d rather invest the difference, keep reserves, or buy more home.
- Your income varies — a lower required payment is safer. You can still pay extra voluntarily to mimic a 15-year without being locked into it.
Bottom line: Many California buyers take a 30-year for the flexible payment and simply pay extra when they can — getting most of the interest savings without the mandatory higher payment. A broker can price both so you decide with real numbers.
The middle path: pay extra on a 30-year
You don’t have to pick one extreme. Using the same illustrative $600,000 loan at 6.7% from the table above (an example, not a quote), here is what a fixed extra principal payment each month does to a 30-year loan:
| Extra principal | Monthly total | Paid off in | Total interest |
|---|---|---|---|
| None | $3,872 | 30 years | ~$794,000 |
| +$300/mo | $4,172 | ~24.3 years | ~$617,000 |
| +$500/mo | $4,372 | ~21.8 years | ~$541,000 |
| +$1,000/mo | $4,872 | ~17.4 years | ~$418,000 |
The 15-year still wins on total interest, partly because its rate is usually lower. But the extra-payment route lets you stop paying extra in a lean month without any penalty, which matters if your income moves around.
How the term changes what you qualify for
Lenders qualify you on the required payment, not the one you plan to make. A higher 15-year payment pushes up your debt-to-income ratio (DTI), which can shrink the price range you’re approved for.
Example: to keep principal and interest alone at 45% of gross income, the illustrative 30-year payment above needs about $8,600 a month of income. The 15-year payment needs about $11,260. Taxes, insurance and other debts push both numbers higher.
Loan size matters too. In 2027, lenders are already honoring conforming limits of $850,000 in most counties and $1,275,000 in high-cost counties. Above those, you’re in jumbo territory, where both terms are available but guidelines differ.
Who each term fits
- 15-year fits: stable W-2 income, strong reserves, a goal of being mortgage-free before retirement.
- 30-year fits: first-time buyers, self-employed borrowers, anyone stretching to buy in a high-cost county.
- Consider 20-year: many lenders also offer 20- and 25-year terms that sit between the two on payment and interest.
We can price several terms side by side on the same day so you compare like for like. Rates change daily, so for an accurate quote call 949-379-5320 (Newport Beach) or 310-759-4757 (Marina del Rey).
Frequently asked questions
Is a 15-year or 30-year mortgage better?
A 15-year saves far more interest and builds equity faster but has a much higher payment; a 30-year is lower and more flexible. If you can easily afford the 15-year payment, it wins financially; otherwise the 30-year’s flexibility is safer.
Do 15-year mortgages have lower rates?
Yes, usually lower than 30-year rates, because the lender is repaid sooner and takes less risk.
Can I pay off a 30-year mortgage early?
Yes. Most mortgages have no prepayment penalty, so you can pay extra toward principal anytime and shorten the term — getting much of the 15-year benefit while keeping the low required payment.
How much more is a 15-year payment?
Typically 30–35% higher per month than a 30-year on the same loan amount, even with the lower rate, because you’re repaying principal in half the time.
Can I switch from a 30-year to a 15-year later?
Yes, by refinancing into a 15-year loan, which means new closing costs and qualifying at that day's rates. Paying extra on your 30-year gets a similar result without a new loan.
Is a 20-year mortgage a good compromise?
It can be. A 20-year term usually has a payment between the 15- and 30-year options and saves a lot of interest compared with a 30-year. Ask for all three terms priced on the same day.
Save Financial, Inc. — NMLS #377740, DRE #01875766. Equal Housing Opportunity. Figures are illustrative for 2026 and not an offer of credit or a guarantee of rates or approval.