If you've ever checked your credit score on Credit Karma, your bank app, or a credit card statement—only to later find out your mortgage lender sees something completely different—you’re not alone. It’s a common source of confusion for homebuyers. In fact, it’s one of the most frequent questions I get from clients:
| "Why is the score my lender sees lower than what I see online?"
Let’s break it down.
Not All Credit Scores Are Created Equal
There isn’t just one credit score. There are dozens of different scoring models used today, and they don’t all work the same way. Think of them like different recipes using similar ingredients—each version weighs the data a little differently.
Here’s why your score might look different:
- Different scoring models are used for different purposes.
- Credit card companies might use a FICO 8 model.
- Auto lenders often use FICO Auto Score 2 or 5.
- Mortgage lenders use older, industry-specific models like FICO Score 2, 4, and 5.
- The scoring models are built to predict different behaviors.
- Credit card scores look at how likely you are to pay revolving debt.
- Mortgage scores are more conservative and focus on long-term repayment.
So What Scores Do Mortgage Lenders Actually Use?
Most mortgage lenders still use FICO Scores from versions developed in the early 2000s:
- Experian: FICO Score 2
- Equifax: FICO Score 5
- TransUnion: FICO Score 4
These are the scores required by Fannie Mae, Freddie Mac, FHA, and VA when evaluating loan applications. Even though newer FICO versions exist (like FICO 10 or FICO 8), lenders don’t use them—at least not for mortgages.
Credit Karma and Bank Scores Use Different Models
Credit Karma uses VantageScore 3.0 or 4.0, which is a completely different algorithm than FICO. These scores are good for general education and credit monitoring—but they’re not what lenders use to approve mortgages.
Your bank or credit card may show a FICO Score, but it’s likely FICO 8 or FICO Bankcard Score, not the versions required by mortgage underwriters.
How Big Can the Difference Be?
It depends, but a 20–40 point difference is common between consumer scores and mortgage scores. Sometimes it can be even more.
This is why you might feel shocked when your lender pulls your credit, and your score is lower than expected—even if you've been monitoring your score elsewhere.
What Should You Do About It?
Here are a few smart tips if you're preparing to apply for a mortgage:
1. Ask your lender for your actual mortgage scores.
Most lenders can show you your three scores (Experian, TransUnion, and Equifax) used in their decision.
2. Focus on the fundamentals.
No matter which model is used, on-time payments, low credit card balances, and a long credit history are always key.
3. Don’t apply for new credit right before shopping for a mortgage.
New credit can drop your score—especially on older scoring models.
4. Work with a lender who can help you improve your score strategically.
We use credit simulation tools to show how specific actions can raise your mortgage score—sometimes in just weeks.
Final Thoughts
Understanding the credit score differences can take the mystery out of the mortgage process. Remember: the score you see isn't wrong—it’s just not the score your lender uses.
If you're serious about buying a home, the best move is to speak with a lender early, get your actual mortgage credit scores, and build a smart plan from there.
Ready to see your mortgage score and start your homeownership journey?
Reach out today for a free credit review and mortgage plan tailored to you.
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