A borrower with a 610 credit score walking into a mortgage lender’s office last month would have hit the same wall that has stood since the mid-2000s: Fannie Mae and Freddie Mac would not purchase a loan with a representative FICO below 620, so most lenders would not write one. As of April 22, 2026, that wall no longer exists. The Federal Housing Finance Agency updated its credit score policy, directing both government-sponsored enterprises to let approved lenders choose, loan by loan, between Classic FICO and VantageScore 4.0 on an interim basis. No minimum score is specified under either model.
The practical effect is a significant transfer of discretion from regulator to originator. Individual lenders, not a blanket federal rule, now decide which scoring model best fits each borrower’s file. For the millions of Americans whose credit profiles sit near or below the old threshold, the change creates a new opening, though not a guarantee.
Why the 620 floor mattered and what replaced it
Fannie Mae’s and Freddie Mac’s eligibility matrices long required a minimum representative credit score of 620 for most conventional loan products. Because the two enterprises back roughly half of all U.S. mortgages, according to Urban Institute housing finance data, that number became the industry’s practical cutoff. Borrowers who fell short were funneled toward FHA loans, which carry their own score requirements and mandatory mortgage insurance premiums, or shut out of homeownership entirely.
Under the new interim framework, no enterprise-level score floor exists. Lenders select Classic FICO or VantageScore 4.0 at the individual loan level, not as a company-wide toggle. The FHFA describes the arrangement as interim, signaling that a permanent framework is still being developed. But for now, the gate is open, at least on paper.
What VantageScore 4.0 changes for borrowers
VantageScore 4.0 differs from legacy FICO models in several ways that matter most for borrowers with limited or uneven credit histories. It uses trended credit data, meaning it evaluates whether a consumer’s balances are rising or falling over time rather than relying on a single snapshot. It can score consumers with thinner credit files, including those with as little as one account and one month of history. And it excludes paid medical collections from its calculations, a change FICO adopted in later versions but that was not reflected in the older Classic FICO models the enterprises had been using.
That last point is not trivial. Medical debt remains the most common type of collection on consumer credit reports, according to Consumer Financial Protection Bureau research. For borrowers whose only credit blemish is a paid hospital bill, VantageScore 4.0 effectively removes the penalty.
The FHFA validated both VantageScore 4.0 and FICO 10T in 2022, citing stronger predictive performance from both newer models compared with legacy versions. That model approval laid the regulatory groundwork. The April 2026 policy builds on it by giving lenders the green light to actually use VantageScore 4.0 in loans they sell to the enterprises.
To support the transition, Fannie Mae and Freddie Mac released a decade of historical VantageScore 4.0 credit scores covering loans purchased from April 2013 through March 2023. That dataset lets lenders compare how borrowers scored under VantageScore 4.0 against actual loan performance, essentially inviting them to run their own back-tests before committing to the newer model.
Lender overlays will likely blunt the immediate impact
Removing the enterprise-level floor does not mean every lender will suddenly approve borrowers with a 580 VantageScore. Most large originators impose their own credit overlays: internal minimums that sit above whatever Fannie or Freddie requires. Those overlays exist because lenders bear repurchase risk. If a loan defaults and the enterprise finds an underwriting defect, the lender can be forced to buy it back. That financial exposure makes originators conservative, regardless of what the regulator permits.
The more interesting question is whether mid-size and community lenders, particularly those focused on first-time buyers or underserved markets, will use the new flexibility to reach borrowers who were previously boxed out. Some almost certainly will. Community development financial institutions and mission-driven lenders have long argued that the 620 floor excluded creditworthy borrowers whose profiles simply did not fit the legacy FICO mold.
But the scale of any expansion remains genuinely unknown. Neither the FHFA nor the enterprises have published data showing how many currently ineligible borrowers would clear underwriting under VantageScore 4.0 but fall below 620 on Classic FICO. Outside estimates offer some context: the Urban Institute has noted that VantageScore models can generate scores for roughly 30 to 35 million more consumers than legacy FICO, largely because of the thinner-file allowances. Not all of those consumers are mortgage-ready, but the pool of potentially newly eligible borrowers is not small.
Critical gaps in the public record
Several important questions remain unanswered. Fannie Mae and Freddie Mac have not detailed any changes to their automated underwriting systems tied to the April 2026 update. Whether Desktop Underwriter or Loan Product Advisor will flag, price, or treat loans differently based on which scoring model a lender selects is unclear. Pricing adjustments through loan-level price matrices could shift risk premiums for borrowers at the lower end of the score spectrum, but no official guidance on that front has appeared.
The FHFA has also not released projections on default rates, loss severity, or prepayment differences when lenders choose VantageScore 4.0 over Classic FICO. The historical dataset covers loan-level scores but does not include a published, side-by-side performance comparison between the two models on the same pool of borrowers. Each lender is running its own analysis, and conclusions will vary by institution, risk appetite, and portfolio mix.
There is also no timeline for when the interim policy becomes permanent, or whether the enterprises might eventually require a single model for all submissions. That uncertainty leaves lenders weighing the cost of supporting two scoring systems, including training, vendor integrations, and compliance checks, against any competitive advantage from adopting VantageScore 4.0 early.
What this does not change
This policy applies only to loans sold to Fannie Mae and Freddie Mac. FHA loans, insured by the Federal Housing Administration and governed by HUD, have their own credit score requirements and are not affected. The same is true for VA loans through the Department of Veterans Affairs and USDA loans through the Department of Agriculture. Borrowers pursuing those programs will still operate under their respective agency rules.
The change also does not eliminate credit scoring from the mortgage process. Lenders must still pull scores and use them in underwriting. What has shifted is which model generates those scores and whether a hard floor applies at the enterprise level. Credit risk has not been abolished. The measurement tool has been updated, and the rigid threshold has been removed.
It is also worth noting what the current rate environment means for this policy’s real-world impact. With mortgage rates still elevated in mid-2026, expanded eligibility does not automatically translate into expanded affordability. A borrower who newly qualifies for a conventional loan but faces a 7% rate and steep home prices may still find homeownership out of reach. The scoring change opens a door; it does not lower the cost of walking through it.
Who stands to gain and what comes next
For borrowers with scores near or below the old 620 line, the policy creates possibility but not certainty. Whether that possibility turns into an actual mortgage depends on which lenders adopt VantageScore 4.0, how aggressively they use the new flexibility, and what internal overlays they maintain. Borrowers with thin credit files or those who have paid off medical collections stand to see the most benefit, since VantageScore 4.0 treats those profiles more favorably than legacy FICO models.
For borrowers well above 620, the immediate impact is minimal. Their loans were already eligible, and lenders had no reason to switch scoring models on strong files. The real action is at the margins, where the old floor kept people out and the new framework lets lenders decide whether to let them in.
The FHFA has framed this as part of a broader modernization effort, moving away from reliance on a single legacy score and toward a framework that can incorporate newer, more predictive models over time. That framing is consistent with the agency’s 2022 decision to approve both FICO 10T and VantageScore 4.0, and with the broader industry shift away from the tri-merge credit report toward a bi-merge model. Whether this modernization translates into meaningfully wider access to homeownership will depend less on the regulation itself and more on how lenders, investors, and mortgage insurers respond to it. That response, as of June 2026, is just beginning to take shape.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
