VantageScore vs. FICO: What Actually Changed in 2026 and Why It Matters for Colorado Buyers
Pull your credit on Credit Karma and it might say 720. Run it through a mortgage lender and the number comes back different. Sometimes a lot different.
That gap is not a glitch. It is the difference between two separate scoring systems, and in 2026 the rules around which one matters for your mortgage just changed. Here is what is actually happening.
FICO: How It Has Always Worked
FICO has been the standard in mortgage lending for decades. It is a point-in-time snapshot. It looks at your payment history, how much of your available credit you are using, the age of your accounts, and a few other factors.
One requirement most people do not know about: FICO needs at least six months of credit history to generate a score at all. If you are new to credit, FICO may not score you.
VantageScore 4.0: How It Works Differently
VantageScore was built by the three major credit bureaus — Equifax, Experian, and TransUnion — as an alternative model. VantageScore 4.0 is the current version. Here is how it differs from FICO:
• It uses trended data. Instead of a snapshot of today, it looks at your behavior over time — whether your balances are going up or down, whether you are paying on time consistently.
• It can score thin-file borrowers. No six-month minimum. People new to credit who do not show up under FICO may have a VantageScore.
• Medical debt carries less weight. Collections from medical bills hit your FICO score harder than they hit your VantageScore 4.0.
• Credit utilization is weighted at 20%. FICO weights it at 30%. If you carry balances, that difference shows up in your score.
The practical result: if you have thin credit, recently paid-off collections, or medical debt on your report, your VantageScore 4.0 is often higher than your FICO score.
What Changed in 2026
This is the part that directly affects buyers right now.
As of September 9, 2026, every lender approved by Fannie Mae or Freddie Mac can choose to use VantageScore 4.0 instead of classic FICO on conventional loans. Before this, lenders were locked into FICO. That changed.
As of October 1, 2026, both scoring models price on the same grid. There used to be a 20-point offset built in that penalized VantageScore 4.0 at delivery. That offset is gone.
What this means in practice: if your FICO score is sitting on the edge of a rate tier or qualification threshold, your lender may be able to run your file using VantageScore 4.0 instead. In some cases that changes the outcome.
The Rules That Apply
A few guardrails to know before you get ahead of yourself:
• One model per loan. Your lender picks Classic FICO or VantageScore 4.0 before the loan closes. You cannot use both on the same file.
• All co-borrowers must use the same model. If you are buying with a spouse or partner, both of you get scored under whichever model your lender selects.
• Manual underwriting still requires Classic FICO. If your loan goes to manual underwriting for any reason, VantageScore 4.0 is not an option.
• FHA loans still require Classic FICO. There is a change planned for early 2027 but it is not final. As of right now, FHA is FICO only.
What This Means for You
If your credit is in good shape, this probably does not change much. If you have been told your score is not quite where it needs to be, or you are a first-time buyer with limited credit history, it is worth having a real conversation about both numbers.
The difference between what FICO says and what VantageScore 4.0 says can be meaningful. And with the flexibility lenders have now, there may be more options available than there were a year ago.
Every file is different. If you want to know where you actually stand before you start looking at homes, reach out. I can pull both scores, tell you exactly what you are working with, and lay out the path from there.