The 620 credit score has been the most important number in conventional mortgage lending for a generation. Miss it by one point and you were locked out of conventional financing entirely. That rule just changed.
Two significant updates have hit the mortgage industry at nearly the same time and together they represent the most meaningful shift in how creditworthiness is evaluated for home loans in over 20 years.
Change 1: Fannie Mae eliminated the 620 minimum credit score
Effective November 16, 2025, Fannie Mae removed the mandatory 620 minimum credit score for conventional loans processed through its Desktop Underwriter (DU) system, per Selling Guide Announcement SEL-2025-09.
Previously, a borrower with a 619 score was automatically ineligible for a conventional Fannie Mae loan regardless of their income, savings, or employment history. That hard floor is now gone. DU now evaluates a borrower's complete financial profile including income stability, asset reserves, debt levels, credit history details, payment history including rent payments, and property characteristics.
FHFA Director William Pulte stated: "Our underwriting standards are the same. As a process matter, to ensure two scores can be used and not just one, we eliminated the requirement for FICO in the guide. Big deal for consumers. Small or nothing deal for underwriting."
Change 2: VantageScore 4.0 is now accepted
Simultaneously, Fannie Mae announced it will now accept VantageScore 4.0 alongside Classic FICO scores for conventional loan origination. This matters because VantageScore 4.0 is fundamentally different from Classic FICO in how it calculates your score:
- Trended data: VantageScore 4.0 analyzes 24 months of payment behavior, not just a snapshot. If your balances have been declining steadily, that positive trend is factored in.
- Alternative data: Rent payments, utility payments and other non-traditional credit behaviors can be incorporated into your score.
- Thin file friendly: Buyers with limited credit history, young buyers, recent immigrants, and people who've always paid cash may score meaningfully higher under VantageScore 4.0 than Classic FICO.
VantageScore estimates that approximately 5 million prospective buyers nationally will benefit from the adoption of these new models.
A timeline of what changed and when
| Date | What happened |
|---|---|
| Nov. 15, 2025 | Fannie Mae DU update goes live. Desktop Underwriter no longer applies a 620 minimum. |
| Nov. 16, 2025 | New loan casefiles go through updated DU. The 620 floor is officially removed for new files. |
| April 2026 | Fannie Mae announces VantageScore 4.0 acceptance. |
| May 2026 | Both changes are active. Individual lenders are in various stages of adopting the new scoring models. |
What this means practically for Colorado buyers
The honest answer is: it depends on your lender. Fannie Mae sets the guidelines for what loans it will buy from lenders. But individual lenders can set their own additional requirements, called "overlays," that are stricter than Fannie Mae's guidelines. Many lenders still have a 620 overlay in place even though Fannie Mae no longer requires it.
As a mortgage broker with access to 70+ wholesale lenders, Three Point Mortgage can shop your scenario across lenders to find one whose guidelines match your situation.
- If your score is 620+: Little changes practically. You already cleared the old floor.
- If your score is 580-619: This is where the change has the most impact. You may now be eligible for conventional financing where you previously were not, subject to DU approval and lender overlays.
- If your score is below 580: FHA loans remain your primary path. The Fannie Mae change doesn't directly help this group yet.
- If you have a thin credit file: VantageScore 4.0 could score you meaningfully higher than Classic FICO, potentially opening conventional loan access that wasn't there before.
What hasn't changed
You still need to demonstrate ability to repay. Income, employment, and DTI ratios all still apply. You still need a down payment (minimum 3% for conventional). PMI providers may still have their own credit score requirements. Individual lenders can still set overlays above Fannie Mae's guidelines. A DU Approve/Eligible is still required.
The bottom line for Colorado buyers in 2026
If you were told "no" based on a credit score in the past, or if you've been hesitant to even start the conversation because you assumed your credit wasn't good enough, 2026 is the right time to take a fresh look. The rules have genuinely shifted in your favor. The best first step is a conversation with a lender who can run your scenario through DU and tell you where you stand under the new guidelines.
Chris Cartwright is a licensed mortgage broker serving homebuyers across Colorado, Washington, Texas, California, Arizona and Florida. He stays current on guideline changes so his clients don't have to and can run your scenario through current DU guidelines to tell you exactly where you stand today.
Want to know where you stand under the new rules?
A 15-minute call and a soft credit pull is all it takes to see exactly what you qualify for today, under the updated Fannie Mae guidelines.
This content reflects guidelines as of May 2026 and is subject to change. Not all lenders have adopted updated Fannie Mae guidelines. All loans subject to credit approval. Equal Housing Lender.