ARM mortgage rate update for Nov. 4, 2026

Homebuyers who are comfortable with some uncertainty in exchange for a potentially lower interest rate may want to consider an adjustable-rate mortgage. These loans can also make sense for people planning to rent out or flip an investment property, or for borrowers who expect to move before the introductory fixed-rate period ends.

Below, we explain how ARMs function, when they may be preferable to the more common fixed-rate mortgage, and what average ARM rates look like based on Mortgage Research Center data.

You can also check the prior business day’s ARM rate report.

Average ARM mortgage rates

ARMs come in several forms, depending on how long the initial fixed-rate period lasts and how often the rate resets after that. For instance, a 7/6 ARM keeps the same rate for seven years, then adjusts every six months.

Fortune reviewed the latest MRC data available as of early November.

Fixed-rate vs. adjustable-rate mortgages

Fixed-rate mortgages make up about 92% of home loans in U.S. households. Unlike ARMs, where the interest rate can move up or down after the introductory period, a fixed-rate loan keeps the same rate for the life of the mortgage. That stability is a major reason so many borrowers choose them.

Still, there are times when an ARM may be worth a closer look. About 8% of borrowers opt for these loans because they offer certain advantages in specific situations.

When an adjustable-rate mortgage may make sense

Three groups of buyers often benefit most from ARMs:

• Starter home buyers: If you expect to move within a few years, an ARM can let you take advantage of a lower initial rate without worrying as much about later adjustments, since you plan to sell before the fixed period ends.
• Investors: Real estate investors who plan to flip a property or rent it out may use an ARM to reduce upfront costs, then sell or adjust rents when the loan resets.
• Buyers in high-rate markets: When interest rates are elevated, ARMs may offer lower initial payments and could become even more attractive if market conditions improve later.

How adjustable-rate mortgages work

ARMs usually begin with a lower fixed interest rate for a set period, such as three, five, seven, or 10 years, and then move into adjustment periods. Several factors influence the rate during those adjustments:

• Benchmark indices: ARM rates are often tied to benchmark measures such as SOFR. The U.S. Treasury publishes an updated SOFR each day, reflecting the overnight borrowing costs banks face.
• Margins: Lenders add a fixed margin to the benchmark when setting the final ARM rate. These margins often range from 2% to 3.5%.
• Caps: Rate caps limit how much the interest rate can rise during a given period or over the full loan term, including initial and later adjustment limits.

Most ARMs are written as 30-year loans. Common examples include 5/1 and 10/6 ARMs, meaning the rate is fixed for five years and then adjusts annually, or fixed for 10 years and then adjusts every six months. Other structures include 3/1, 7/1, and 10/1 ARMs.

Check Out Our Daily Rates Reports

Refinancing from an ARM into a fixed-rate mortgage

If your plans change, you may be able to refinance into a fixed-rate mortgage. For example, you might decide to stay in your home longer than expected.

That’s a situation many younger homeowners know well, especially those who cannot afford to move up and are remaining in their starter homes.

Refinancing from an ARM into a fixed-rate loan works much like refinancing between fixed-rate mortgages. It generally involves comparing lenders, submitting documents to show you qualify, and paying off the existing mortgage.

Pros and cons of adjustable-rate mortgages

Before applying for an ARM, it helps to weigh the advantages and drawbacks. A trusted loan officer can also help determine whether this type of mortgage fits your plans.

Pros

• Lower initial rate potential. During the introductory fixed-rate period, an ARM may offer a lower rate than a fixed-rate mortgage.
• Easier qualification for some borrowers. Some applicants may find it simpler to qualify for an ARM than for a fixed-rate loan.
• Possible savings later on. If market rates fall during the adjustment periods, your monthly payment could decrease too.

Cons

• Payments can rise. Because adjustments depend on market conditions, your rate and monthly payment could also increase.
• More difficult to compare. The terms can be more complicated, making it harder to shop around than with standard fixed-rate mortgages.
• Less certainty. Fixed-rate mortgages offer steadier monthly payments, although other costs such as homeowners insurance or HOA dues can still change. With an ARM, you need to be comfortable with more uncertainty.