What Is a 5/1 Adjustable-Rate Mortgage (ARM)?
Key Takeaways
- Adjustable-rate mortgages have rates that fluctuate over time.
- A 5/1 ARM is a very popular type of adjustable-rate mortgage.
- Your rate is initially fixed for five years with a 5/1 ARM and after that, your rate might change once a year based on market conditions.
- A 5/1 ARM will include caps and floors for how much the interest rate can change from year to year as well as over the life of the loan.
The homebuying process involves many considerations, such as deciding how much home you can afford, what type of mortgage you should apply for, and whether to go with a fixed-rate or adjustable-rate loan. For some homebuyers, an adjustable-rate mortgage offers the opportunity to take advantage of lower interest rates, at least temporarily, and save some money.
Adjustable-rate mortgages (ARMs) are available with several different fixed-rate and adjustment periods, including 5/1 ARMs. To determine whether a 5/1 ARM fits your needs and goals, let’s discuss how it works and its potential advantages and disadvantages.
What Is a 5/1 ARM Loan?
A 5/1 ARM, sometimes called a 5/1 hybrid ARM, is a type of mortgage that blends features of both fixed-rate and adjustable-rate loans. Each type of ARM is classified by two numbers, such as 5/1, to indicate the length of the fixed-rate period and the frequency of rate changes.
5/1 ARMs offer a fixed interest rate for the first five years of the loan term. Beginning in year six, the rate is subject to annual adjustments for the rest of the term, subject to the loan's terms and adjustment caps. If the interest rate changes, your monthly mortgage payment may increase or decrease.
How Does a 5/1 ARM Work?
To understand how a 5/1 ARM works, there are two phases to be aware of:
- Fixed period: The “5” in 5/1 ARM indicates the loan has a fixed interest rate for the first five years. During this time, you’ll have predictable monthly payments.
- Adjustable period: The “1” in 5/1 ARM indicates the interest rate adjusts once a year after the initial fixed period.
A 5/1 ARM is usually a 30-year loan, but some lenders offer the option to choose a different term length.
Regardless of your term length, your monthly payment will include principal and interest. The amount can change over time as the rate changes. Many borrowers also pay escrowed costs, such as property taxes and homeowners insurance, as part of their monthly payment.
5/1 ARM Rates and Rate Caps
Your initial rate, as well as subsequent rate adjustments following the fixed rate period, is determined by adding your lender’s fixed margin to the market index your loan is tied to, like the Secured Overnight Financing Rate (SOFR), which is used for most new adjustable-rate mortgages today. You can review your loan documents to see which index your lender uses.
Because market indexes fluctuate over time, your interest rate may increase, decrease, or stay the same after each annual adjustment.
It might feel risky taking on a loan with a payment that could change every year. However, there are rate caps that help protect you by limiting how much your rate can increase or decrease during adjustments. These adjustment caps can reduce unexpectedly large payment changes over time. These caps are represented as a series of three numbers, such as 2/3/5.
So, if you get a 5/1 ARM with 2/3/5 rate caps, here’s what all those numbers mean:
- The “2” represents the initial adjustment cap, which limits the first rate increase in year 6 to a maximum of 2%.
- The “3” represents the periodic or subsequent adjustment cap, which limits how much the rate can change each year after that.
- The second “5” represents the lifetime adjustment cap, which limits how much the rate can rise over the initial rate during the life of the loan.
Are Today’s Rates Right for You?
We can help make buying a home, refinancing, and getting cash from your equity more affordable. Ask us what rate we can offer you.
Get Your RateHypothetical Example of a 5/1 ARM Loan
Here’s what your monthly principal and interest payments might look like if rates rise after the 5-year fixed period for a 30-year 5/1 ARM:
Hypothetical example for illustrative purposes only; not a commitment to lend or an offer of currently available terms. Rates, payments, terms, and savings shown are hypothetical figures selected solely to illustrate how mortgage costs and terms can vary, and do not reflect an actual loan offer.
- Loan amount: $325,000
- Initial interest rate: 5.75%
- Rate caps: 2/3/5
- Years 1–5: $1,897 (initial fixed payment)
- Year 6: $2,277 (possible new payment at the first allowed increase)
- Maximum (lifetime cap): $2,888 (highest possible payment if rates hit the lifetime cap beginning in year 7)
Rate caps don’t just limit increases. They also limit how much your rate can go down. So, in this example, your monthly payment increases alongside the hypothetical interest rate. But if interest rates fall, so does your payment, but no more than the 2/3/5 caps, down to the lifetime floor, which for most ARMs, is equal to the loan's margin.
When Is a 5/1 Adjustable-Rate Mortgage a Good Fit?
A 5/1 ARM can be a great solution for those looking for more affordable payments at first. However, it’s important to consider all the potential pros and cons in case an alternative loan better targets your homeownership goals.
Pros of a 5/1 ARM
Some potential advantages of 5/1 adjustable-rate mortgages include:
- Lower payments at the beginning: The fixed rate for the first five years of a 5/1 ARM is typically lower than other mortgage types, resulting in lower initial monthly payments.
- Benefits for short-term homeowners: If you plan to refinance your mortgage or sell your home before the five-year fixed period ends, you can still take advantage of the lower initial rate.
- Potential for savings down the road: Interest rates don’t always increase. Sometimes, they decline or stay the same. If they decrease after the fixed period, your mortgage payments will likely be lower.
Cons of a 5/1 ARM
Possible drawbacks of 5/1 ARMs worth considering include:
- Risk of increasing rates: After the fixed period, your interest rate and monthly payments could increase substantially.
- More expensive overall costs: You could end up paying more over the loan’s term if interest rates continue to increase. This could result in paying more in total than you would with a fixed-rate mortgage.
- Refinancing risk: Even if you plan to refinance before the fixed period ends, there’s no guarantee it’ll be advantageous, especially if rates, home values, or your credit and income situation have changed for the worse.
Requirements for a 5/1 ARM Loan
If you think a 5/1 ARM is the right type of mortgage for you, there are some requirements and other considerations to keep in mind:
- Loan type: Not all types of mortgages can be 5/1 ARMs, and those that can have their own specific requirements to fulfill.
- Credit score and income: Lenders have varying credit score and income requirements, all designed to ensure you can handle the mortgage payments, even if they increase with a rate hike. At Freedom Mortgage, we typically look for a score of 620 or higher for conventional loans and at least 550 score for FHA loans.
- Down payment: Depending on the type of loan you get, you will likely need a down payment of at least 3.5%–5% of the purchase price. If you can afford to, and would like to lower your monthly payment, you can also make a larger down payment than the required amount.
- Debt-to-income ratio (DTI): DTI requirements vary by lender and loan program but a ratio of 43% or less is a common guideline.
Alternatives to 5/1 ARMs
Whether a 5/1 ARM is the best mortgage for you depends on your budget, goals, and how long you plan to stay in the home. There are other mortgage options that could be a better fit.
- Other adjustable-rate mortgage types: 7/1 ARMs and 10/1 ARMs offer longer fixed periods than 5/1 ARMs, which may be a better match for your timeline and situation.
- Fixed home loans: Fixed-rate loans can be 15- or 30-year mortgages, like ARMs, but the main difference is that you can enjoy more predictable payments for the life of the loan.
5/1 ARM FAQs
Still have questions about 5/1 ARMs? Here are answers to help you better understand these mortgages.
Is a 5/1 ARM a 30-Year Mortgage?
Most, though not all, adjustable-rate mortgages are 30-year loans. With a 5/1 ARM, you’d have a fixed rate for the first five years, and an adjustable rate for the remaining 25 years of the loan term, unless you sell or refinance before then.
Can You Refinance out of a 5/1 ARM?
Yes, you can typically refinance out of a 5/1 ARM when desired, as long as you meet lender requirements. Many borrowers choose to refinance into a fixed-rate loan to lock in a relatively stable payment before the adjustable period begins. However, it’s important to note that the rate you receive during a refinance is based on market conditions at the time of the refinance. If rates have moved higher since you took out your ARM, your rate in a refinance may be higher.
Is It a Good Idea to Use a 5/1 ARM?
A 5/1 ARM can be a smart choice if you plan to sell or refinance before the fixed period ends, since you’ll benefit from a lower initial rate. It might also be a good idea if your income is expected to increase, making the potential for higher rates less of a concern.
If you want long-term stability and more predictable payments, however, a fixed-rate loan might be a better choice.
Final Thoughts: 5/1 Adjustable-Rate Mortgages
A 5/1 ARM is a unique type of loan that may be a good fit if you’re confident in your financial situation and comfortable with the potential risk of adjustable rates. And if you plan to sell or refinance your home before the fixed period ends, the lower initial interest rate of a 5/1 ARM could save you money during the first five years.
Whether your homebuying goals align with a 5/1 ARM or you’re more drawn to the stability that comes with fixed-rate mortgages, Freedom Mortgage is here to help you find the best loan for your situation. Ready to get started?
Victoria Araj is the Senior Director, Managing Editor at Freedom Mortgage. In her 20 years of working for top mortgage lenders, she’s held roles in mortgage banking, public relations, editorial content, and more. She has a bachelor’s degree in Journalism with an emphasis in Political Science from Michigan State University, and a master’s degree in Public Administration from the University of Michigan. She has spoken at several industry conferences, where she’s discussed the importance of editorial content for brands.
- ${title}${badge}





