VantageScore 4.0 and Mortgage Pricing: What Changed

Correction, October 16, 2026: An earlier version of this article described a separate VantageScore 4.0 pricing grid and a 20-point adjustment. For eligible loans under each enterprise's effective-date rules beginning October 1, 2026, that separate grid and adjustment have been removed. Equal grids do not promise identical scores or final rates for every borrower. Sources: Fannie Mae, Freddie Mac, FHFA.

As of September 2026, Fannie Mae and Freddie Mac accept VantageScore 4.0 from every approved lender, not just a handful with prior written approval. The headlines are calling it the end of the FICO monopoly.

Here is what actually changed.

What changed with VantageScore 4.0 in September 2026

Fannie Mae's Lender Letter LL-2026-06, effective September 9, 2026, opened VantageScore 4.0 to all approved lenders underwriting through Desktop Underwriter 12.1. Lenders no longer need prior approval to use it.

Three practical conditions came with it:

• The lender has to request VantageScore 4.0 from all three repositories when ordering a new report.

• The same score model has to apply to every borrower on the loan, no mixing.

• Manually underwritten loans still require Classic FICO.

That last one matters more than it sounds. If your file needs manual underwriting, this whole conversation does not apply to you.

Does VantageScore 4.0 save you money on a mortgage?

On the credit report, yes, usually a couple hundred dollars. On the loan, it depends on your file. For eligible loans, the score model no longer carries a separate pricing grid, but the two models can still score you differently.

Credit report costs have climbed hard over the last few years, and that is a real friction point. But a one-time savings on a report does not change your debt-to-income ratio, does not change your monthly payment, and does not change what you qualify for. The rate does.

How VantageScore 4.0 and FICO actually score you differently

Classic FICO reads a snapshot. It looks at your credit utilization on the exact day the report is pulled. Carry an unusually high card balance that week and your score takes the hit. It also cannot score people who have not used traditional credit in the last six months at all.

VantageScore 4.0 reads a trend. It analyzes a rolling 24 months of balances and behavior instead of one day, and it factors in alternative data like rent and utility payment history. VantageScore says this makes roughly 33 million previously unscoreable consumers scoreable.

Because it rewards a good trajectory instead of punishing a bad pull day, VantageScore numbers often come back higher than FICO for the same borrower.

What happened to the 20-point adjustment

Under the earlier rules, price adjustments designed for FICO were applied to VantageScore 4.0 at 20 points higher, through a separate grid. For eligible loans under each enterprise's effective-date rules beginning October 1, 2026, that is gone: Fannie Mae's September 30 reissue removed its separate VantageScore grid, and Freddie Mac's September 30 bulletin aligns its grids across Classic FICO and VantageScore 4.0.

Equal grids do not mean equal scores. The two models can still return different numbers for the same borrower, and your final rate still depends on your full profile, the loan program, the property, and the market that day.

Should you ask your lender to use VantageScore 4.0?

You should not have to ask. A good lender runs the comparison for you, using actual current loan pricing under the lender's applicable rules.

Alternative data is a genuinely good idea. Scoring people on rent and utility history is a real step forward for thin-file buyers, and for borrowers who cannot get a Classic FICO score at all, VantageScore 4.0 is not a worse option, it is the only option. That group should absolutely use it.

For everyone else, the question is not which model is philosophically better. It is which one prices your specific file cheaper today. Compare the actual current loan pricing under the lender's applicable rules.

What to ask your loan officer

If you are shopping right now, two questions:

Which credit score model are you running my file on?

Have you priced it both ways?

Any lender who cannot answer the second one is not looking out for your pricing.

Sam Alpert is President and Mortgage Loan Originator at Spring Home Company, an independent mortgage brokerage in Toms River, New Jersey, licensed in New Jersey, Pennsylvania and Texas. Company NMLS #2741914. Individual NMLS #1961555. Reach him at hello@springhome.co or 732-908-8040.

This article is for informational purposes only and is not a commitment to lend, a rate quote, or financial advice. Pricing examples are illustrations. Rates, terms, LLPAs and program guidelines change without notice and vary by borrower, property and lender.