An adjustable-rate mortgage (ARM) is a type of mortgage loan with an interest rate that is fixed for a specific period of time before it changes. The typical adjustable-rate mortgage requirements to qualify include a credit score (usually 620 or above depending on the program), down payment (usually 3-5% is required), debt-to-income (DTI) ratio, and proof of income.
Homebuyers are often drawn to an adjustable-rate mortgage (ARM) because the initial interest rate is typically lower than what’s available with a fixed-rate mortgage. That means lower monthly payments during the early years of the loan, which can either increase the amount you’re able to afford or free up cash.
In this article, you’ll learn how ARM rates are calculated, how caps keep rates from fluctuating too wildly, what you need to qualify for an ARM, and how to decide if one is right for you.
What Is an Adjustable-Rate Mortgage?
An adjustable-rate mortgage has two phases: a fixed-rate period and an adjustable period.
During the fixed-rate period, your interest rate and your monthly principal and interest payment will remain the same. Once this period ends, your interest rate may go up or down.
ARMs generally take the form of two numbers, such as 5/1 ARM, 7/1 ARM, or 10/1 ARM.
- The first number represents the number of years the rate is fixed.
- The second number represents how often the rate can change after that, generally every 12 months or 6 months, depending on the loan.
For example, a 5/1 ARM has a fixed interest rate for the first five years. After that, the rate can be adjusted every year for the following years.
How Does an ARM Rate Reset Work?
When calculating a new interest for your loan, you will need to add two variables together. They are called an index and a margin.
- Index: This is a benchmark interest rate that can change throughout the life of the mortgage depending on the state of the economy. Many ARMs now use the Secured Overnight Financing Rate (SOFR) as a reference. The rate is adjusted if market interest rates change.
- Margin: This is the percentage points in addition to the index used by the lender. Your contract states it, and it will never change during the term of your loan.
The formula used to calculate your new rate is: $$\text{Fully Indexed Rate} = \text{Index} + \text{Margin}$$
While this formula dictates the target rate, your actual interest rate is legally restricted by the rate caps built into your mortgage contract.
A Hypothetical 5/1 ARM Worked Example
To illustrate how a rate reset functions, consider this hypothetical scenario:
- Starting rate: 6.00%
- Initial fixed period: 5 years
- Index at first adjustment: 5.00%
- Margin: 2.00%
- Fully indexed rate: 7.00%
- Initial adjustment cap: 2%
- Subsequent adjustment cap: 2%
- Lifetime cap: 5%
Step 1: Calculate the fully indexed rate.
The quoted index of $5.00 plus the margin of $2.00 equals $7.00.
Step 2: Apply the initial adjustment cap.
Your initial rate is 6.00%. The first adjustment is subject to a maximum change of +2.00%, so the maximum rate would be 8.00% during the first adjustment period.
Step 3: Determine the new rate.
Because the fully indexed rate (7.00%) is less than the maximum rate (8.00%), your new interest rate for year six would be 7.00%. Your monthly principal-and-interest payment would then be recalculated based on the new interest rate and the balance of your loan.
Note: This is a strictly hypothetical example for educational purposes and does not represent a current Future Home Loans rate or offer.
What Are ARM Rate Caps?
Rate caps are consumer protection features of adjustable-rate mortgages. They are designed to restrict how much your interest rate can change during any given adjustment period, as well as the lifetime of the loan.
Typically, ARM caps are depicted as a set of three numbers, which could be, for instance, 2/2/5 or 5/2/5.
| ARM Feature | What It Controls | Example (2/2/5 Cap Structure) |
| Initial adjustment cap | The maximum percentage your rate can change at the very first reset. | Rate cannot increase more than 2% above the starting rate. |
| Subsequent adjustment cap | The maximum percentage your rate can change at any following periodic reset. | Rate cannot increase more than 2% from the previous year’s rate. |
| Lifetime cap | The absolute maximum total rate increase allowed over the entire life of the loan. | Rate can never exceed 5% above the original starting rate. |
It is essential to understand that rate caps do not cap your payment; a 2% increase in your interest rate will cause a much bigger jump in your monthly payment than you might expect.
What Are the Requirements for an Adjustable-Rate Mortgage?
The core adjustable-rate mortgage requirements are similar to those of fixed-rate mortgages, but you need to be able to afford the payments based on the initial rate, as well as any subsequent increases.
The following are required of most applicants, although specific program requirements can vary and your financial needs will be taken into account.
- Credit Score: Conventional adjustable-rate mortgages typically require a credit score of at least 620. Having a higher score enables one to get better spreads and initial rates. Government-insured ARMS like FHA or VA loans might have more lenient requirements.
- Down Payment: At least a 3-5% down payment is required for conventional adjustable-rate mortgages. Additionally, putting down at least 20% will allow one to avoid paying private mortgage insurance.
- Debt ratio: Most lenders use the DTI (Debt-to-Income) to calculate your ability to repay a loan. A 43 DTI or 50 DTI is a common standard for maximum ratios based on the automated underwriting systems.
- Income and Employment: You should have a verifiable income that reflects the past two years. You will be asked for W-2s, tax return transcripts, and current pay stubs.
- Cash Reserves / Assets: Depending on an applicantโs credit profile and loan type, a lender might require that a certain amount of cash (usually a couple of monthsโ worth of mortgage payments) be kept in the borrowerโs account.
- Property Type and Occupancy: The loan programs are available for owner-occupied properties, second homes, and investment properties, but the borrowerโs eligibility criteria are stricter for non-owner-occupied properties.
At Future Home Loans we offer multiple adjustable-rate mortgage programs to suit your financial needs; we will look at your overall financial makeup to determine what rates you can qualify for.
Adjustable Rate Mortgage Requirements in Florida
In case you are interested in an adjustable-rate mortgage in Florida, be aware that lenders have to follow federal regulations but still consider local market conditions when reviewing your application.
Floridaโs home-buying market is particularly peculiar, as it has a large representation of condos and coastal properties, which means that in this state buying a property with an ARM can have its own requirements. Firstly, purchasing a condo with an adjustable-rate mortgage (ARM) will require you to have your homeowner association undergo certain financial evaluations. Secondly, Floridaโs property insurance costs and reassessed property taxes need to be taken into account when determining your DTI ratio.
Because an ARM can offer a lower monthly payment, it can sometimes allow Florida homebuyers to stretch their budgets to afford the higher payments due at closing, assuming they are willing to risk future payment increases. However, to navigate the complexities of the mortgage process and ensure compliance with Florida-specific regulations, it is best to work with qualified mortgage experts.
Adjustable Rate Mortgages in Jacksonville
For homebuyers in the Northeast Florida region, shopping for an adjustable-rate mortgage Jacksonville-style means finding local experts familiar with the First Coast housing market.
Jacksonville has a large military population and lots of corporate relocations. That means people tend to move here every 3-5 years. That makes a 5/1 ARM a good option for many people here. You shouldn’t waste money on a 30-year mortgage if you are going to sell it or move away before any rate changes take place.
Understanding the local home loan process in Jacksonville is essential to avoid unnecessary delays in your appraisal, hazard insurance, or closing.
When Does an ARM Make Sense?
An adjustable-rate mortgage isn’t right for everyone, but it can help you make a wise financial decision. You should think about getting an ARM if:
- You plan to move or sell soon: If you think you will sell the house before the initial period ends, an ARM would allow you to take advantage of a lower rate without having to worry about the rates changing.
- You plan to refinance: If you think that you are going to be able to refinance because you feel that you will have more income, an increase in your credit score, or if rates decrease, you may want to consider an ARM. Refinancing, however, is not guaranteed.
- You want to aggressively pay down principal: A lower initial rate allows for more payments to go towards the principal, assuming you’re making payments towards the loan principal on a monthly basis.
- You have income flexibility: If you have a steady income stream and can afford to make extra payments if the interest rate does jump up to the caps, then an adjustable-rate mortgage is less risky for you.
ARM vs. Fixed-Rate Mortgage
Choosing between fixed- and adjustable-rate mortgage options depends heavily on your risk tolerance and time horizon.
| Feature | Adjustable-Rate Mortgage (ARM) | Fixed-Rate Mortgage |
| Initial Interest Rate | Typically lower than fixed options. | Typically higher than ARM options. |
| Payment Predictability | Guaranteed only for the initial 3, 5, 7, or 10 years. | 100% predictable for the life of the loan. |
| Rate Changes | Adjusts periodically based on a market index. | Never changes, regardless of market conditions. |
| Ideal Borrower Profile | Short-term homeowners, those expecting income growth, or buyers seeking lower initial payments. | Long-term homeowners prioritizing stability and predictability. |
Questions to Ask Before Choosing an ARM
If you are considering an adjustable-rate mortgage, ask your lender to explain the terms of the contract in detail. In particular, make sure you understand the following:
- How long is the initial fixed-rate period?
- What index is used to determine resets?
- What is the lenderโs margin?
- What are the initial, periodic, and lifetime caps?
- What is the maximum monthly payment you could be charged if rates peak at their lifetime cap?
- Are there any prepayment penalties if you sell your home or refinance out of the mortgage?
Explore Your Options!
While choosing the best mortgage for yourself, it is essential to note that any loan program will be best suited to your unique personal needs and desires. The introductory rate of an ARM is attractive, but you also need to consider the long-term risks associated with the chosen product which include margin, index, and caps.
Before locking in, it’s important to test your budget to the maximum rate caps and be realistic about how long you intend to stay in the home.
With Future Home Loans, you can discuss loan options, compare adjustable-rate mortgage requirements, and even calculate the payment differences. Contact us today and let a local mortgage expert help you explore your options and possibilities for qualifying for a home loan.
Disclaimer: Mortgage requirements, rates, terms, and program availability may change. This information is general in nature and does not constitute an offer to make a loan or commitment thereof. Refinancing is subject to credit approval and is not guaranteed.
Frequently Asked Questions (FAQ)
What are the adjustable rate mortgage requirements for credit scores?
Traditional adjustable-rate mortgages usually require a credit score of at least 620. Borrowers with credit scores of 740 or higher will usually get the lowest rates and highest margins. Requirements may vary depending on the loan program.
How much down payment do I need for an ARM?
A down payment of 3% to 5% is standard for conventional ARMs for a primary residence. A lower down payment (under 20%) incurs the additional cost of private mortgage insurance (PMI). For an investment property or second home, a much higher down payment is expected.
Can I refinance my adjustable-rate mortgage in Florida before it resets?
Of course, you can always refinance an ARM to a fixed-rate mortgage. There is no due date for refinancing as long as there is not a prepayment penalty in your loan contract. You will be required to meet standard credit, income, and equity guidelines of the lender so that your new loan program will depend on prevailing market conditions.
What happens if the index drops on my ARM?
If the index rate falls below the previous level during the adjustment period, your fully indexed rate will decrease, resulting in reduced monthly payments on principal and interest. Additionally, your rate can never go below the lender’s margin, which is the permanent floor for your loan.
Is an adjustable-rate mortgage in Jacksonville a good idea?
An ARM can be a good option for those buyers who plan to move or to downsize before the end of the introductory period since it has lower payments during this time. Thus, it is especially suitable for those who are going to stay in the house for a short time, for example, military personnel or employees that are going to move because of their jobs in five or six years.
Still looking for more answers? Visit our Home Loan FAQ page.