Yes, you can refinance a 30-year mortgage to a 15-year mortgage, and the move usually lowers your interest rate and cuts your total interest paid by tens of thousands of dollars. The catch is a higher monthly payment, because the same balance is now being repaid in half the time. Whether the switch pays off depends on how far your rate drops, what closing costs you pay, and how long you plan to stay in the home.
What Actually Changes When You Shorten the Term
Two things move in your favor. First, 15-year fixed rates run below 30-year fixed rates. In mid-2025 the national averages sat at roughly 6.14% for a 15-year and 6.74% for a 30-year, a spread of about 0.60 percentage points. That gap moves around, but 15-year rates have historically stayed roughly half a point under 30-year rates.
Second, and more importantly, you’re paying interest for 15 years instead of 30. On a $200,000 loan at 6% over 30 years, total interest runs about $231,640. Refinance that same balance into a 15-year loan at 5.5% and total interest falls to about $94,120, a savings of more than $137,000.1The Federal Reserve Board. A Consumer’s Guide to Mortgage Refinancings
The monthly payment goes up. In that same example, it climbs from about $1,199 to $1,634. Every extra dollar goes to principal, so equity builds much faster, but the payment is real and you have to be able to make it every month for 15 years.
Whether You’ll Qualify
Lenders want to see that you can carry the larger payment comfortably. Four numbers drive the decision.
Credit Score
Most conventional lenders want a FICO score of at least 620. Scores in the mid-to-upper 700s generally unlock the best rates, and that matters more on a 15-year loan because a small rate difference compounds across every payment.
Loan-to-Value Ratio
Your loan-to-value ratio compares what you still owe to what the home is worth. For a rate-and-term refinance, which is what a 30-to-15 switch usually is, Fannie Mae allows an LTV up to 97% on a one-unit primary residence.2Fannie Mae. Limited Cash-Out Refinance Transactions Getting to 80% or below lets you avoid private mortgage insurance, which chips away at the savings the refinance is supposed to deliver. If you’re pulling cash out at the same time, the ceiling drops to 80% LTV on a one-unit primary residence.3Freddie Mac. Maximum LTV TLTV HTLTV Ratio Requirements for Conforming and Super Conforming Mortgages
Debt-to-Income Ratio
Debt-to-income measures your total monthly debt payments against your gross monthly income. Most lenders cap it at 43%, and the calculation uses the new, higher 15-year payment alongside car loans, student loans, and credit card minimums. A DTI under 36% strengthens the application and often improves the rate offered.
Income Stability
Lenders generally want a two-year continuous employment history. Self-employed borrowers typically document two years of consistent earnings through tax returns and profit-and-loss statements.
If You Have an FHA or VA Loan
Streamline programs offer a shorter path with less paperwork. A VA Interest Rate Reduction Refinance Loan requires that you already hold a VA-backed home loan and can certify that you live in or previously lived in the home.4Veterans Affairs. Interest Rate Reduction Refinance Loan FHA Streamline refinances can sometimes be approved without a new credit check or income verification, though individual lenders may still impose their own minimums, and both programs can sometimes skip the appraisal.
What It Costs and When You Break Even
Refinancing is not free. Expect the following line items at closing:
- Origination fee, usually 0.5% to 1% of the loan amount.
- Appraisal fee, roughly $300 to $450, or nothing if the lender grants Value Acceptance.
- Title search and lender’s title insurance, which vary widely by location.
- Recording fees charged by your local government, which vary by jurisdiction.
- Optional discount points, at 1% of the loan amount each, which typically buy the rate down by about 0.25 percentage points.
Nationally, refinance closing costs averaged about $2,400 in 2025, roughly 0.72% of the loan amount, with wide variation by loan size and state. Some borrowers roll these costs into the new loan balance rather than paying out of pocket, but that raises the amount being financed and eats into the interest savings the shorter term is supposed to produce.
Fannie Mae’s Value Acceptance program, formerly called an appraisal waiver, can let eligible borrowers skip the in-person appraisal. Eligibility depends on property type, prior appraisal data on file, and automated underwriting results, and leasehold properties, community land trust properties, and situations where the mortgage insurer requires a full appraisal are excluded.5Fannie Mae. FAQs – Property Valuation
The Break-Even Calculation
Divide your total closing costs by the monthly savings from the new loan. The result is how many months it takes to recoup what you paid. If closing costs are $4,000 and the refinance saves $200 a month in interest, you break even in 20 months. A common rule of thumb is that a refinance is worth it if you’ll break even within three years and plan to stay well beyond that.
One clarification about the word “savings” here: it means the drop in interest charges, not a lower monthly payment. Your payment will almost certainly go up when you compress a 30-year balance into 15 years. The savings show up in the total interest paid across the life of the loan.
Check Your Current Loan for a Prepayment Penalty
Look at your existing loan before you refinance. For qualified mortgages originated after January 10, 2014, federal rules limit prepayment penalties to the first three years and cap them at 2% of the balance in years one and two, and 1% in year three. Older loans and non-qualified mortgages follow different rules, so review your documents or call your servicer.
Your Old Escrow Balance
If your current mortgage has an escrow account, the old servicer must return any remaining balance within 20 business days after the old loan is paid off.6eCFR. 12 CFR 1024.34 – Timely Escrow Payments and Treatment of Escrow Account Balances If you refinance with the same lender, they may transfer the escrow to the new loan instead.
When the Switch Doesn’t Make Sense
A few situations argue against pulling the trigger:
- You plan to move soon. Sell before the break-even point and the closing costs wipe out the savings.
- The rate drop is too small. A reduction under about 0.75 percentage points from your current rate often can’t generate enough monthly savings to justify the closing costs on a reasonable timeline.
- The higher payment stretches your budget. A 15-year payment can run 30% to 50% higher than a 30-year payment on the same balance. If that squeezes out retirement contributions, emergency savings, or the ability to absorb a surprise expense, a longer term is safer.
- You’re deep into the current loan. Fifteen or twenty years into a 30-year mortgage, most of each payment already goes to principal. Starting a new 15-year loan resets the amortization clock and can raise the total interest you pay compared with finishing the original loan.
Ways to Shorten Your Loan Without Refinancing
If closing costs or qualifying hurdles push you off a formal refinance, you can still cut years and interest off your current mortgage.
Extra Principal Payments
You can add to principal any month, with no application and no closing costs. On a $200,000 loan at 6%, an extra $50 a month shortens the loan by about three years and saves more than $27,000 in interest.1The Federal Reserve Board. A Consumer’s Guide to Mortgage Refinancings You keep your original interest rate, so this doesn’t capture the lower 15-year rate a refinance would give you, but it also doesn’t cost anything to start.
Biweekly Payments
Split your monthly payment in half and pay every two weeks. That produces 26 half-payments a year, the equivalent of 13 full payments instead of 12, with the extra payment landing entirely on principal. On a 30-year loan, biweekly payments can trim roughly six years and save tens of thousands in interest. Ask your servicer first, since some charge a setup fee or require enrollment in a formal program.