VantageScore 4.0 and Your Mortgage: How to Get the Better Score
By Josh Yoder
There are now two credit scoring models approved for conventional mortgages, and most borrowers will never be told that. As a multi-state mortgage broker, AZM Lending can look at whether your file can be scored under both models and then shop it to the wholesale investor that prices the better one. The difference between the two scores on the very same credit file is sometimes the difference between a decline and an approval, so it is worth understanding what changed and what to ask for.
What actually changed, and when
The Federal Housing Finance Agency has been phasing VantageScore 4.0 into the conventional market all year. Three dates matter:
- April 22, 2026: Fannie Mae and Freddie Mac began accepting VantageScore 4.0 through a limited rollout, open only to lenders with prior written approval.
- September 9, 2026: that restriction came off. In FHFA’s words, the Enterprises “expanded the availability of VantageScore 4.0 to all approved lenders, removing the requirement for prior written approval.”
- September 30, 2026: the quiet one that matters most. Fannie and Freddie “published adjustments to their upfront fees to align those fees across the Classic FICO and VantageScore 4.0 credit score models.”
Read that third date again. Until late September, using the newer model could carry a pricing difference. Now the upfront fees are aligned, which means a borrower who looks better under VantageScore 4.0 can benefit from that without paying a penalty for the privilege. That is what turned this from an industry curiosity into something worth checking on a real file.
One thing that did not change: the tri-merge credit report is still required. FHFA deferred the move to bi-merge reporting back in January 2025 and it remains on hold, so all three bureaus are still pulled.
Why a second score can work in your favor
VantageScore 4.0 is built differently from the Classic FICO model that has run mortgage underwriting for decades. It weighs payment behavior over a roughly two-year window rather than a single snapshot, and it can produce a score for people with thin credit files who the older model leaves unscored.
The policy goal is explicit. FHFA Director Bill Pulte described the change as “modernizing credit scoring with more predictive models, helping millions of Americans who responsibly pay rent qualify for mortgages.” HUD Secretary Scott Turner called it “a meaningful step toward expanding access to homeownership” for creditworthy borrowers previously overlooked.
In practice, the borrowers most likely to see a higher number are the ones who have been paying rent and utilities on time without a long installment-credit history, and the ones who have been steadily paying balances down rather than carrying a flat balance month to month.
The part most borrowers will not hear
Approval is not the same as adoption. Every Fannie and Freddie approved lender is now permitted to use VantageScore 4.0, but most are still pulling Classic FICO on nearly every file. Industry reporting puts almost all of the early VantageScore 4.0 volume with just two lenders: Rocket Mortgage and United Wholesale Mortgage.
That detail is more useful than it first appears. United Wholesale Mortgage is a wholesale lender, which means it does not work with borrowers directly. It works through mortgage brokers. So a meaningful share of the early capability to actually use this score sits in the broker channel, not at the retail bank branch. If you walk into a retail lender, you get whatever scoring model that single institution has implemented. A broker can take the same file to multiple investors and ask which one will look at it differently.
What this means at AZM Lending
Here is the practical mechanics of how we use this, because that is the part that actually affects your file:
- Ask us to check both. When we review your credit, we can look at whether your file can be scored under both models rather than stopping at the first number that comes back.
- We re-shop on the stronger score. If VantageScore 4.0 puts you in a better tier, we take the file to wholesale investors that accept the model instead of accepting a decline or a worse rate from one that does not.
- The fee alignment protects you. Because the upfront fee structures were aligned on September 30, a stronger VantageScore 4.0 result is not offset by a pricing surcharge for using the newer model.
- If you were declined earlier this year, that answer may be stale. A file turned down before September 9 was evaluated under narrower rules than the ones in force today. That is worth a second look rather than a year of waiting.
- We tell you which model you were scored under. You should never have to guess that, and you are entitled to ask any loan officer the same question.
A retail loan officer can only offer what their own institution has built. That is the structural reason a broker is useful in a transition like this one, and it is why AZM Lending exists as a broker rather than a single-product lender.
FHA borrowers: mark January 1, 2027
FHA has set its own date. VantageScore 4.0 and FICO Score 10T become eligible credit scoring models for FHA-insured underwriting on case numbers assigned on or after January 1, 2027. These are additional accepted models, not replacements, so the traditional FICO score remains valid.
The case-number trigger is the detail to plan around. It is the date your FHA case number is assigned that governs which models are available, not the date you start shopping or the date you close. If you are an FHA borrower whose file is marginal on Classic FICO and you are not in a hurry, a January case number may give you an option a December one does not. That is a conversation worth having with AZM Lending before you lock a timeline, not after.
What to do now
- Ask what model you were scored under. If the answer is “FICO” and your file is marginal, ask what VantageScore 4.0 would show.
- Keep paying balances down rather than holding them flat. The two-year trend is part of the newer model’s calculation.
- Dispute real errors at all three bureaus. Tri-merge is still required, so a single-bureau problem still reaches your file.
- If you are FHA and borderline, talk through whether a case number in January 2027 or later serves you better.
- If you were declined earlier in 2026, ask for a re-review rather than assuming the answer still stands.
Talk it through
Credit scoring changes are only useful if someone actually applies them to your file. If you want to know which model your file looks best under, and which investors will act on it, talk to an AZM loan officer and we will work through it with you.
For context on where rates sit while you plan, the Mortgage News Daily index put the 30-year fixed at 7.56% and the 15-year fixed at 7.22% as of October 6, 2026.
Sources
- FHFA, Credit Scores policy page (rollout timeline, removal of prior-approval requirement, upfront fee alignment, bi-merge deferral)
- FHFA news release, April 22, 2026 (Pulte and Turner statements, Credit Score Competition Act)
- National Association of Realtors, Washington Report (FHA January 1, 2027 implementation date and case-number trigger)
- HousingWire (concentration of early VantageScore 4.0 volume, bi-merge under consideration)
- Mortgage News Daily rate index (rates as of October 6, 2026)
