Policy brief
Classic FICO vs VantageScore 4.0 vs FICO 10T — When Each Helps
VantageScore 4.0 is now accepted by all GSE lenders, and FHA adds two new score models in January 2027. Here's what changed, when each model helps, and what to document for audits.
Mortgage File IQ policy brief · September 28, 2026 · Educational only — not underwriting guidance.
What changed
- Sept 9, 2026 — FHFA Director Bill Pulte directed Fannie Mae and Freddie Mac to accept VantageScore 4.0 from all approved single-family lenders, effective immediately. This ended a 50-lender pilot that had run since May 1.
- Lender choice applies. GSE-approved sellers may deliver loans using Classic FICO or VantageScore 4.0 — their pick.
- Sept 10, 2026 — FHA published INFO 2026-21: VantageScore 4.0 and FICO Score 10T become eligible for FHA-insured underwriting on January 1, 2027, alongside Classic FICO. (FHA confirmed the intent back in May via INFO 2026-11.)
- FICO 10T is NOT eligible for GSE delivery. It is FHA-only as of this writing. Say that out loud in every training — it is the easiest thing to get wrong.
The three models at a glance
| Classic FICO | VantageScore 4.0 | FICO Score 10T | |
|---|---|---|---|
| Where it works | Everywhere — GSE, FHA, VA, USDA | GSE (since 9/9/26); FHA (1/1/27) | FHA only (1/1/27) |
| What makes it different | The long-standing default | Uses trended data — rent, utility, and telecom payment history | FICO's newest model with trended data |
| Best fit | Any file, any program | Thin-file borrowers with strong rent/utility/telecom history but light traditional credit | FHA borrowers once lenders adopt it |
When VantageScore 4.0 helps
Borrowers who pay rent, utilities, and phone bills on time every month but have thin traditional credit files. VantageScore 4.0 factors that trended payment data in — Classic FICO generally does not. If a borrower looks stronger on payment behavior than their tradeline depth suggests, VantageScore 4.0 may tell a fuller story.
When Classic FICO is still the answer
Everywhere it already works. It remains accepted by every agency and investor. Nothing about these changes removes or weakens Classic FICO — it is still the default, and every lender's systems already support it.
FHA timeline — January 1, 2027
- FHA's TOTAL Scorecard will be updated for case numbers assigned on or after January 1, 2027 (Title II forward mortgages only) to allow the alternative models in TOTAL decisions.
- FHA is holding virtual office hours for mortgagees and stakeholders: Nov 16–20, 2026 and Jan 11–15, 2027, 2:30–3:30 PM ET. Questions can be submitted in advance to sfhousing@hud.gov with subject line "Alternative Credit Score Models."
- FHA published an Alternative Credit Scores Preparedness Guide and TOTAL Developer's Guide Release 5.0 for AUS vendors.
- FHA encourages mortgagees to confirm with their credit and technology partners that systems will be ready.
Audit-readiness checklist
- Document which score model was used on every file — Classic FICO, VantageScore 4.0, or FICO 10T.
- Confirm the model used is eligible for the program and delivery channel on that file (e.g., FICO 10T on a GSE delivery = problem).
- For FHA files, confirm the case number assignment date against the Jan 1, 2027 TOTAL cutover.
- Confirm how Desktop Underwriter and Loan Product Advisor treat each score model in their findings — check current AUS documentation before stating specifics to clients.
Sources
- FHFA directive via Director Pulte's announcement (~Sept 4, 2026) and FHFA statements; effective Sept 9, 2026.
- FHA INFO 2026-21 (Sept 10, 2026) — "FHA Announces Implementation Date and Issues Preparedness Guide for Alternative Credit Score Models": hud.gov/hud-partners/single-family-fha-info
- FHA INFO 2026-11 (May 21, 2026) — initial confirmation of intent (referenced in INFO 2026-21).