What Is FICO 10T?

The Short Answer

FICO 10T is a newer FICO credit scoring model that Fannie Mae and Freddie Mac have begun accepting for mortgage underwriting. Its defining feature is trended credit data: instead of scoring a single point-in-time snapshot of your credit report, it reads roughly 24 months of payment and balance behavior. Full active use in mortgage underwriting is still moving through a phased rollout.

The shift traces to a joint announcement from the Federal Housing Finance Agency and the Department of Housing and Urban Development on April 22, 2026, stating that the two enterprises will accept mortgage loans assessed using FICO Score 10T and VantageScore 4.0.^[1] That announcement opened the door; it did not flip a switch across the industry overnight.

What Does "Trended Data" Mean?

Classic credit scoring reads your file the way a photograph reads a room: what is the balance right now, what is the status right now, how many accounts are open right now. Trended data reads it the way a short video would — the same fields, but tracked month over month for roughly two years.

The practical difference is trajectory. Two people can carry an identical $4,000 balance today. One has been steadily paying a $9,000 balance down over eighteen months. The other has been climbing from $800 toward the limit. A snapshot model sees the same number for both. A trended model can distinguish between them.

What Trended Data Does Not Do

• It does not add new accounts to your report — it reads the history already being reported.
• It does not produce a published formula, so no one can calculate a point change in advance.
• It does not apply retroactively to a lender still running an older model version.
• It does not change who reports what: bureaus receive whatever data furnishers choose to send.

Utilization behavior is the piece most consumers can actually observe themselves. Our credit utilization calculator shows your aggregate and per-card ratios today — useful for understanding where a trend line would currently be sitting, even though it cannot tell you what any model will make of it.

FICO 10T vs. Older FICO Models

This is a methodology difference, not a promise of movement in either direction. Reading two years of history instead of one month changes what the model can see; it does not guarantee that what it sees in your file will be scored higher or lower than before.

Where Things Stand for Mortgages in 2026

This is an unfolding rollout rather than a completed change. The verified sequence so far:

• April 22, 2026 — FHFA and HUD jointly announce that Fannie Mae and Freddie Mac will begin accepting mortgage loans assessed using FICO Score 10T and VantageScore 4.0.
• Current status — VantageScore 4.0 is available to approved lenders through a limited rollout. FICO Score 10T implementation is on a later, phased timeline.
• July 1, 2026 — Fannie Mae publishes historical credit score data for FICO Score 10T, along with additional VantageScore 4.0 data, giving lenders and analysts a baseline to study.
• As of this update — full active use of FICO 10T in mortgage underwriting is still pending, and FHFA has not finalized implementation timing.

For a borrower today, the operative fact is that the model your lender pulls may still be a legacy FICO version. If a mortgage is on your horizon, ask the loan officer directly which model and version their underwriting uses. Our overview of tradelines and mortgage approval covers what underwriters weigh beyond the score itself, and how tradelines factor in before a mortgage walks through the timing considerations.

Does This Affect Authorized User Tradelines?

A trended model considers account behavior across time rather than a single month, so consistent long-term account history — including authorized user history, where the issuer reports it — is part of what the model reads. That is a statement about what the data window contains, not a prediction about any result.

Three separate parties control the outcome and none of them is a marketplace: the card issuer decides whether an authorized user account is reported at all, the model decides how reported data is scored, and the lender decides what to do with the score. No specific outcome under FICO 10T — or any model — can be promised.

Account age is the characteristic most often discussed in this context; see aged tradelines for how age is measured and credit utilization and mortgage approval for the balance-side view.

How Does FICO 10T Relate to VantageScore 4.0?

They are separate models from separate companies that happen to share two things: both use trended data, and both were named in the same 2026 regulatory shift for enterprise-backed mortgage lending. FICO 10T comes from Fair Isaac Corporation. VantageScore 4.0 comes from VantageScore Solutions, originally founded as a joint venture of the three national credit bureaus.

Their timelines within the rollout also differ, with VantageScore 4.0 already in limited lender availability while FICO 10T follows on a later schedule. For the deeper company-versus-company breakdown — ranges, minimum scoring criteria, and factor weighting — see VantageScore vs. FICO Score.

Sources

1. [1] Federal Housing Finance Agency, joint FHFA and HUD announcement (April 22, 2026) on acceptance of FICO Score 10T and VantageScore 4.0 by Fannie Mae and Freddie Mac — fhfa.gov/news
2. [2] Fannie Mae, Credit Score Models and Reports Initiative, including the July 1, 2026 publication of historical credit score data — singlefamily.fanniemae.com — credit score models and reports
3. [3] Fannie Mae Selling Guide, credit score eligibility and underwriting requirements — selling-guide.fanniemae.com
4. [4] U.S. Department of Housing and Urban Development, agency newsroom — hud.gov/press
5. [5] Scotsman Guide, industry reporting on the enterprise credit score model transition — scotsmanguide.com

Implementation details are summarized from the agencies' own publications as of the update date above. Because FHFA has not finalized timing for full FICO 10T underwriting use, this page will be revised as the rollout progresses.

Frequently Asked Questions