Sarah Johnson
Author
April 5, 2026
Published
7 min read
Reading Time

When you check your credit score on a free app, you might see one number, but when you apply for a mortgage, the lender sees another. Why? Because there are two main scoring models: FICO and VantageScore.
FICO (Fair Isaac Corporation) is the industry standard. Over 90% of top lenders use FICO scores to make lending decisions. It has been around since 1989 and focuses heavily on payment history and length of credit.
VantageScore was created by the three major bureaus (Experian, Equifax, TransUnion) as a competitor to FICO. It's often what you see on free monitoring sites like Credit Karma. It's more 'forgiving' to people with short credit histories but can vary significantly from your FICO score.
The key differences: FICO requires at least six months of credit history to generate a score, while VantageScore can generate one in just a month. FICO weights payment history at 35%, while VantageScore considers it 'extremely influential' but uses a different calculation.
Which one should you care about? Both! But if you're preparing for a major purchase like a home or car, you should specifically check your FICO scores, as that's what the lender will likely use.
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