The 2026 Credit Score Change: What Actually Happened — and Why You Still Don't Get to Pick Your Score
Somebody forwarded me a headline last week with three question marks after it. The gist was that mortgage credit scores changed in 2026 and everything is different now.
Part of that is true, and the true part is interesting. The rest is being repeated on a few dozen lender blogs, and it's the part talking people into decisions they shouldn't make — including waiting to buy a house.
So let me back up and give it to you straight.
What actually changed
Fannie Mae and Freddie Mac buy most of the ordinary mortgages in this country, and for decades they've required one credit score model. That's not my characterization. In its own FAQ, U.S. Federal Housing (FHFA) writes that loans delivered to them "have required credit scores, when available, from a single model — the 'Classic FICO' model."
Classic FICO is the number your loan officer reads off your mortgage credit report. It is usually not the number in your credit card app. That gap has been ruining people's afternoons for twenty years, and it has nothing to do with any of this.
In 2022 the regulator validated two newer models: VantageScore 4.0 and FICO Score 10T. Then on April 22, 2026, it announced that Fannie and Freddie would update their selling policies to allow current use of VantageScore 4.0 and future use of FICO 10T.
So something real happened. Here's the part the headlines skipped.
Correction #1: it's a limited rollout, not a flipped switch
Straight from Fannie Mae's own page describing the change: it is "effective immediately and will be implemented through a limited lender rollout to help ensure operational readiness across our systems and the industry before making it broadly available."
Limited. Rollout.
And the line nobody quotes: "Lenders not participating in the limited rollout must continue using Classic FICO scores from all three credit bureaus."
VantageScore 4.0 is, in Fannie's words, "available now for a limited number of approved lenders." Everybody else is still on Classic FICO. That's not foot-dragging — it's how you turn over the plumbing under a multi-trillion-dollar market without breaking somebody's closing on a Friday.
Correction #2: you don't get to choose the model
FHFA calls this a "lender choice" approach. Lender. Its FAQ says the Enterprises "will allow lenders to determine which credit score model to use on each loan they deliver."
And you can't run both and keep the friendlier number. Same FAQ, plain as day: "For the time being, the Enterprises will not accept scores from multiple models on a given loan."
This one comes up. Somebody reads that VantageScore 4.0 might score them differently and wants to request it. That lever doesn't exist on your side of the table, and anybody who offers to "run you both ways and pick the best one" is describing something the agencies say they won't buy.
Correction #3: the two-bureau thing did not happen
You may have read that mortgages are moving to "bi-merge" — two credit bureaus instead of all three. That has been reported as a done deal for about two years running.
FHFA's answer to that question is two words long: "Not initially." The full line: "The inclusion of VantageScore 4.0 credit scores will not change the Enterprises' current credit reporting requirements (e.g., tri-merge/bi-merge credit reporting)."
Fannie's own timeline is blunter. On January 16, 2025, the implementation date for optional bi-merge reports was revised from the fourth quarter of 2025 to "a to-be-determined date." It has not moved since. And VantageScore 4.0, where it is live, runs "through a tri-merge credit report from each credit bureau."
The practical consequence is the most useful line in this article: all three bureaus still count. If you've been letting one of them sit there with an error on it because you read that only two matter now — go pull it. That one is free to fix and it's yours to control.
Correction #4: FICO 10T is not being used
Fannie's status for FICO Score 10T is four words: "Available at a later date." They've committed to giving advance notice before launch.
On July 1, 2026, Fannie did publish historical FICO 10T data, and I think that's what's confusing people because it made the rounds as news. Publishing historical scores so analysts can study a model is not the same as underwriting your loan with it. That's a research dataset, not your file.
What the new models will actually do
This is the good part.
FHFA says the newer models "take into account additional sources of data, including rent payment history, and have the potential to accurately score many more Americans." If you've paid rent on time for six years and your file is thin because you don't carry debt, the current system mostly shrugs at you. That's the problem these models were built for.
VantageScore's own materials describe 4.0 as the first tri-bureau model to use trended credit data, which "reflects changes in credit behaviors over time, in contrast to the static individual credit history records" older models use. Instead of a photograph of what you owe the day someone pulls your report, it watches which direction you've been walking. Somebody who has been chipping a balance down all year and somebody who got there last Tuesday stop looking identical.
Real improvement. Not in your hands yet.
When none of this matters to you
If your credit is in decent shape, this whole article is trivia. The model isn't what's standing between you and a house.
And let me say the unpopular thing clearly: do not wait on this. People are asking. Waiting on a rollout with no announced date, hoping for a bump nobody can promise you, isn't a plan — it's a way to spend a year not owning anything. Freddie Mac put the 30-year fixed at 6.69% the week of August 6, 2026. Nobody at Fannie, Freddie, FHFA, or my desk can tell you where that sits whenever the rollout finishes.
If your credit genuinely isn't ready, that's a different conversation and a fixable one. Credit problems aren't shameful — life happens to everybody, usually at a bad time. But the fix is disputing the error, paying the collection, or letting a late payment age. It isn't waiting for a new ruler.
What actually decides your loan
A credit score is one input. It isn't the decision.
The file decides — income, how steady it is, what you owe against what you make, reserves, the down payment, the property. I've had 780s I couldn't help and low-600s that closed without drama, and the score was the least interesting thing on the page both times.
On the conventional side — the Fannie and Freddie world this whole change lives in — there are low-down-payment options and affordable programs built for buyers who assume they don't qualify. Most people who tell me their score disqualifies them are wrong about which part of their file is the actual problem.
Send me your situation. I'll tell you what your real number is, which bureau is dragging you, and whether it's worth fixing before you shop. If the answer is "you're fine, go buy a house," I'll tell you that too.
Frequently Asked Questions
Did my credit score change in 2026?
No. Nothing about this changes the score you already have. What changed is which scoring model Fannie Mae and Freddie Mac will accept on loans sold to them. U.S. Federal Housing (FHFA) directed them to permit lenders to choose between Classic FICO and VantageScore 4.0. Your credit history, your payment record, and the data in your file are all exactly what they were.
Can I ask my lender to use VantageScore 4.0 on my loan?
No. FHFA describes this as a "lender choice" approach, and its FAQ states the Enterprises "will allow lenders to determine which credit score model to use on each loan they deliver." It also states that "the Enterprises will not accept scores from multiple models on a given loan," so nobody can run you both ways and submit the better result. Fannie Mae adds that lenders not in its limited rollout "must continue using Classic FICO scores from all three credit bureaus."
Do all three credit bureaus still matter, or is it two now?
All three. The move to "bi-merge" two-bureau reporting has been widely reported as done, and it is not. FHFA's FAQ says adding VantageScore 4.0 "will not change the Enterprises' current credit reporting requirements (e.g., tri-merge/bi-merge credit reporting)." Fannie Mae's timeline shows the implementation date was revised in January 2025 from the fourth quarter of 2025 to "a to-be-determined date." Pull all three reports and fix errors on all three.
Is FICO Score 10T being used for mortgages now?
Not yet. Fannie Mae lists FICO Score 10T as "available at a later date" and has said it will give advance notice and implementation guidance before launch. Fannie did publish historical FICO 10T data on July 1, 2026, which is why the model has been in the news, but publishing historical data for industry analysis is not the same as using the model to underwrite a loan.
I have a thin credit file. Will the newer models help me?
That's the group they were designed for, though the benefit isn't available to most borrowers yet. FHFA says the newer models "take into account additional sources of data, including rent payment history, and have the potential to accurately score many more Americans." VantageScore also describes 4.0 as the first tri-bureau model built on trended credit data, which reflects how balances have moved over time instead of a single snapshot. If you have a long clean rent history and little traditional credit, that's the case this was built to score.
Should I wait to buy until the new credit score models roll out?
I'd advise against it, and I say that knowing how it sounds coming from a mortgage banker. There is no announced completion date for the broad rollout, no one can promise you a higher number under a different model, and no one can tell you where rates sit whenever it finishes. If your credit needs work, fix the specific items holding it down. If it doesn't, this change has no bearing on whether now is a good time for you.
Not sure which number a lender will actually see when they pull you, or which bureau is the one dragging you down? Send me your situation and I'll walk you through what's really on the file.
Call or text me at (512) 577-8898, email [email protected], or start at www.ccm.com/Stephen-Steakley.
If you — or a friend or family member — ever have a mortgage question, I'm right up the road.
Stephen Steakley · Regional Branch Manager, CrossCountry Mortgage, LLC (NMLS #3029) · NMLS #274124 · 1464 E Whitestone Blvd, Suite 1603, Cedar Park, TX 78613 · Equal Housing Lender. This article summarizes publicly published Fannie Mae and U.S. Federal Housing (FHFA) policy as of August 12, 2026 and is for general information only; it is not legal, credit-repair, or tax advice, and program guidelines change. Not affiliated with or endorsed by Fannie Mae, Freddie Mac, the Federal Housing Finance Agency, FICO, VantageScore, or any government agency.
