If your adjustable-rate mortgage (ARM) reset is approaching and your payment is about to jump, refinancing to a fixed-rate loan often makes sense when the rate difference between your new ARM rate and current fixed rates is significant, you plan to stay in the home for several more years, and you can recover closing costs within a reasonable timeframe. The decision hinges on three numbers: your post-reset ARM rate, today’s fixed rates, and your break-even point.

What Happens During an ARM Reset

When your ARM reaches the end of its initial fixed period (commonly 5, 7, or 10 years), the rate adjusts based on a benchmark index plus a margin set in your loan documents. According to the Consumer Financial Protection Bureau, most ARMs reset annually after the initial period, and while rate caps limit how much your rate can increase per adjustment and over the loan’s lifetime, a reset can still raise your monthly payment substantially, particularly when interest rates have climbed since you took out the loan.

For a borrower who locked in a 3.5% rate on a 5/1 ARM in 2021, a reset in 2026 could push the rate to 6% or higher, depending on the index and margin. On a $400,000 remaining balance, that increase translates to roughly $650 more per month.

Key Factors for Your Decision

Rate comparison. Calculate the difference between your new ARM rate and the fixed rates available today. If your ARM will reset to 6.25% and you can lock a 30-year fixed at 5.75%, refinancing saves you money immediately, even after accounting for closing costs. As noted in Principles of Finance, comparing the total cost of financing over your expected holding period gives a clearer picture than rate alone.

Time horizon. Refinancing makes the most sense when you plan to stay in the home long enough to recover closing costs. Typical refinance closing costs run 2% to 5% of the loan amount. On a $400,000 loan, that is $8,000 to $20,000. If refinancing saves you $200 per month, your break-even point is 40 to 100 months (roughly 3 to 8 years). If you expect to sell or move within two years, the upfront cost may outweigh the monthly savings.

Rate stability. A fixed-rate mortgage eliminates future rate risk. If rates continue rising or remain elevated, locking in now protects you from further increases at subsequent ARM adjustments. If rates are expected to fall, staying with the ARM another year or two could position you to refinance into a lower fixed rate later, but that approach carries risk if rates move differently than forecasted.

Read also: When Does It Make Sense to Refinance Your Mortgage in the US

Loan term. Refinancing resets the clock on your mortgage. If you are seven years into a 30-year ARM and refinance into a new 30-year fixed loan, you extend your total repayment period to 37 years unless you choose a shorter term. A 20-year or 15-year fixed-rate loan can save substantial interest over time but requires higher monthly payments.

When Refinancing Makes Sense

Refinance to a fixed rate when your ARM reset will push your rate significantly higher than current fixed rates, you plan to remain in the home for at least three to five more years, you can afford closing costs (or roll them into the loan without exceeding your home’s appraised value), and you value payment certainty over potential future rate decreases. Borrowers who stretched to afford the initial ARM payment and cannot absorb a $500-plus monthly increase also benefit from refinancing, even if the fixed rate is slightly above the reset rate, because it avoids payment shock.

When Staying with the ARM Makes Sense

Keep your ARM if the reset rate remains competitive with or below current fixed rates, you plan to sell or move within the next one to three years, your ARM’s rate caps limit the increase to a manageable amount, or you expect rates to decline and want the option to benefit from lower adjustments in future years. Some borrowers also stay with an ARM temporarily while improving their credit score or paying down the loan balance to qualify for better refinance terms later.

Next Steps

Request a loan estimate from at least two lenders showing the fixed rate, monthly payment, and total closing costs for a refinance. Compare those figures to your ARM’s new rate and payment (found in your adjustment notice or by contacting your current lender). Calculate your break-even point and weigh it against how long you expect to own the home. Rates change daily, so confirm current terms with a licensed lender before making a final decision. For personalized guidance on your situation, consult a licensed mortgage professional or a HUD-approved housing counselor.

Financial Disclaimer: This article provides general educational information about adjustable-rate mortgage resets and refinancing decisions in the United States. It is not personalized financial, lending, or legal advice. ARM reset rates, refinance rates, loan eligibility, and closing costs vary by lender, loan program, credit profile, and location. Rates as of September 2026 change daily. Verify current terms with a licensed lender and consult a licensed mortgage professional or HUD-approved housing counselor for advice specific to your circumstances.