For the past few weeks, I’ve been watching FHA adjustable-rate mortgage (ARM) refinance activity because the change is hard to ignore.
To put the scale of this shift into perspective: in May 2026 alone, FHA endorsed 3,461 ARM refinances—more than the 2,714 recorded during all of 2017. From January through May, ARMs represented 7.2% of FHA refinance endorsements, compared with just 0.2% during the same period last year.
That is a striking change in product mix. The more important question is why this particular refinance structure has suddenly become so attractive to borrowers.
The increase also fits within the broader return of adjustable-rate mortgages across the agency market. Agency ARM share rose from 0.31% in 2021 to 3.34% through May 2026, as elevated monthly payments and home prices made the lower initial ARM rate more relevant for qualification and near-term cash flow. The FHA refinance segment is narrower, but the affordability pressure behind it looks familiar.
The adjustable-rate FHA refinance is coming through two distinct paths: people refinancing an existing FHA loan and people moving from conventional financing into FHA.
For borrowers already in FHA loans, the FHA Streamline Refinance provides a relatively low-friction route, with limited documentation and often no new appraisal. The new loan must still deliver a net tangible benefit. A lower initial ARM rate can help meet that requirement while providing immediate payment relief.
That combination matters in the current market. The borrower may already be accustomed to the FHA mortgage-insurance structure, leaving the decision largely dependent on whether the lower initial rate produces enough monthly savings to make the refinance worthwhile.
For conventional borrowers moving into FHA, the calculation is more complicated.
The new FHA loan carries both an upfront mortgage insurance premium and an annual mortgage insurance premium. The ARM rate advantage therefore has to be meaningful enough to offset the FHA mortgage-insurance costs and the other expenses associated with the refinance.
After comparing notes with several experienced people in my network, these transactions appear to involve some combination of qualifying at the lower initial note rate, navigating limited equity and preserving Down Payment Assistance second liens that could complicate another refinance structure.
The broader agency ARM data provides some context for that interpretation. Compared with 2021, the 2026 agency ARM borrower has a higher average debt-to-income ratio and a higher loan-to-value ratio. That does not establish why any individual FHA borrower refinanced, but it supports the view that qualification, payment relief and available equity are becoming more important in ARM product selection.
Qualification may be part of the explanation. A lower initial ARM payment may allow a borrower to qualify when the payment associated with a fixed-rate refinance would push the debt-to-income ratio too high.
Limited equity may also play a role. FHA financing can provide a workable route when the borrower’s current loan-to-value position makes another refinance structure difficult.
Existing DPA second liens add another layer. Preserving the lien may be important when a different refinance structure could require it to be paid off, subordinated or otherwise disrupted.
The circumstances will vary from borrower to borrower. Taken together, however, they help explain why someone might accept FHA mortgage-insurance costs in exchange for a lower initial rate or a more workable path to qualification.
What stands out most in the underlying data is the extreme concentration of this volume.
From January through May, FHA endorsed 9,696 ARM refinances across the two borrower paths shown here.
→ View the FHA ARM Refinance Lender Rankings
Among borrowers refinancing an existing FHA loan, the top 10 lenders accounted for 94% of the volume.
The same was true among borrowers moving from conventional financing into FHA.
The names behind that concentration are also revealing. United Wholesale Mortgage, Freedom Mortgage, Rocket Mortgage and PennyMac appear among the five largest FHA ARM refinance lenders in both borrower groups. Those four firms also occupy four of the top five positions in the broader agency ARM seller/issuer ranking. The datasets measure different segments of the market, so the rankings are not directly interchangeable. The overlap is nevertheless notable.
What emerges as a common characteristic among these lenders is a broader operating advantage. Large independent mortgage banks often work across retail, wholesale and correspondent channels, giving them the reach to introduce a product, distribute it through a large network and build volume relatively quickly. These lenders also have the ability to handle the product’s specific eligibility, underwriting and lien considerations.
A relatively small group of lenders appears to have developed the ability to identify, structure, underwrite and originate these loans at scale. That may include experience with FHA Streamline requirements, limited-equity scenarios, DPA second liens and the economics of moving a borrower from conventional financing into an FHA ARM.
The volume is growing quickly, but lender participation remains narrow.
→ Explore FHA endorsement data in FHA Pivot
The lower initial payment is a real benefit, particularly when qualification or near-term cash flow is the immediate concern. It is not the complete economics of an adjustable-rate loan. The length of the initial fixed period, the adjustment schedule, rate caps and the borrower’s ability to absorb a future payment increase remain important parts of the decision. The earlier agency ARM analysis explores that tradeoff in greater detail.
Affordability pressure may have created the opening, and a small group of lenders appears to have figured out how to serve it at scale. The next few months should tell us whether this is the beginning of a lasting shift or simply a sharp, temporary spike.
Two borrower paths, and a market dominated by a small group of lenders, help explain one of the sharpest shifts in FHA refinance activity this year.
For the past few weeks, I’ve been watching FHA adjustable-rate mortgage (ARM) refinance activity because the change is hard to ignore.
To put the scale of this shift into perspective: in May 2026 alone, FHA endorsed 3,461 ARM refinances—more than the 2,714 recorded during all of 2017. From January through May, ARMs represented 7.2% of FHA refinance endorsements, compared with just 0.2% during the same period last year.
That is a striking change in product mix. The more important question is why this particular refinance structure has suddenly become so attractive to borrowers.
The increase also fits within the broader return of adjustable-rate mortgages across the agency market. Agency ARM share rose from 0.31% in 2021 to 3.34% through May 2026, as elevated monthly payments and home prices made the lower initial ARM rate more relevant for qualification and near-term cash flow. The FHA refinance segment is narrower, but the affordability pressure behind it looks familiar.
The adjustable-rate FHA refinance is coming through two distinct paths: people refinancing an existing FHA loan and people moving from conventional financing into FHA.
For borrowers already in FHA loans, the FHA Streamline Refinance provides a relatively low-friction route, with limited documentation and often no new appraisal. The new loan must still deliver a net tangible benefit. A lower initial ARM rate can help meet that requirement while providing immediate payment relief.
That combination matters in the current market. The borrower may already be accustomed to the FHA mortgage-insurance structure, leaving the decision largely dependent on whether the lower initial rate produces enough monthly savings to make the refinance worthwhile.
For conventional borrowers moving into FHA, the calculation is more complicated.
The new FHA loan carries both an upfront mortgage insurance premium and an annual mortgage insurance premium. The ARM rate advantage therefore has to be meaningful enough to offset the FHA mortgage-insurance costs and the other expenses associated with the refinance.
After comparing notes with several experienced people in my network, these transactions appear to involve some combination of qualifying at the lower initial note rate, navigating limited equity and preserving Down Payment Assistance second liens that could complicate another refinance structure.
The broader agency ARM data provides some context for that interpretation. Compared with 2021, the 2026 agency ARM borrower has a higher average debt-to-income ratio and a higher loan-to-value ratio. That does not establish why any individual FHA borrower refinanced, but it supports the view that qualification, payment relief and available equity are becoming more important in ARM product selection.
Qualification may be part of the explanation. A lower initial ARM payment may allow a borrower to qualify when the payment associated with a fixed-rate refinance would push the debt-to-income ratio too high.
Limited equity may also play a role. FHA financing can provide a workable route when the borrower’s current loan-to-value position makes another refinance structure difficult.
Existing DPA second liens add another layer. Preserving the lien may be important when a different refinance structure could require it to be paid off, subordinated or otherwise disrupted.
The circumstances will vary from borrower to borrower. Taken together, however, they help explain why someone might accept FHA mortgage-insurance costs in exchange for a lower initial rate or a more workable path to qualification.
What stands out most in the underlying data is the extreme concentration of this volume.
From January through May, FHA endorsed 9,696 ARM refinances across the two borrower paths shown here.
→ View the FHA ARM Refinance Lender Rankings
Among borrowers refinancing an existing FHA loan, the top 10 lenders accounted for 94% of the volume.
The same was true among borrowers moving from conventional financing into FHA.
The names behind that concentration are also revealing. United Wholesale Mortgage, Freedom Mortgage, Rocket Mortgage and PennyMac appear among the five largest FHA ARM refinance lenders in both borrower groups. Those four firms also occupy four of the top five positions in the broader agency ARM seller/issuer ranking. The datasets measure different segments of the market, so the rankings are not directly interchangeable. The overlap is nevertheless notable.
What emerges as a common characteristic among these lenders is a broader operating advantage. Large independent mortgage banks often work across retail, wholesale and correspondent channels, giving them the reach to introduce a product, distribute it through a large network and build volume relatively quickly. These lenders also have the ability to handle the product’s specific eligibility, underwriting and lien considerations.
A relatively small group of lenders appears to have developed the ability to identify, structure, underwrite and originate these loans at scale. That may include experience with FHA Streamline requirements, limited-equity scenarios, DPA second liens and the economics of moving a borrower from conventional financing into an FHA ARM.
The volume is growing quickly, but lender participation remains narrow.
→ Explore FHA endorsement data in FHA Pivot
The lower initial payment is a real benefit, particularly when qualification or near-term cash flow is the immediate concern. It is not the complete economics of an adjustable-rate loan. The length of the initial fixed period, the adjustment schedule, rate caps and the borrower’s ability to absorb a future payment increase remain important parts of the decision. The earlier agency ARM analysis explores that tradeoff in greater detail.
Affordability pressure may have created the opening, and a small group of lenders appears to have figured out how to serve it at scale. The next few months should tell us whether this is the beginning of a lasting shift or simply a sharp, temporary spike.
An FHA Streamline Refinance allows a borrower with an existing FHA-insured mortgage to refinance with limited credit documentation and underwriting. The existing mortgage must be current, and the new loan must provide a net tangible benefit to the borrower. “Streamline” refers to the reduced documentation and underwriting requirements; it does not mean the refinance has no costs.
From January through May 2026, adjustable-rate mortgages represented 7.2% of FHA refinance endorsements by count, compared with 0.2% during the same period in 2025.
A borrower may consider an FHA ARM refinance to obtain a lower initial interest rate or payment, use an eligible FHA Streamline transaction or move from conventional financing into an FHA-insured mortgage. The suitability of an ARM depends on the borrower’s circumstances and future rate risk.
FHA Pivot is Polygon Research’s market-intelligence model for exploring HUD FHA endorsement data, including lender, loan, product, geographic and market-share trends. It is part of Polygon Pulse suite.