FICO vs VantageScore: why your scores don't match

Most people have multiple credit scores at any given moment, and they don't match. Your Credit Karma score might say 730. Your Discover app says 750. Your mortgage lender pulls a 710. They're not all wrong, they're different scoring models, calculating from different data, weighted differently. Knowing which score matters for which decision matters more than the raw number.

The two big scoring models: FICO and VantageScore

Two competing companies sell scoring models to lenders:

• FICO (Fair Isaac Corporation): the dominant scoring system. Used in ~90% of lending decisions for credit cards, auto loans, mortgages, etc.
• VantageScore: launched in 2006 as a joint venture by Experian, TransUnion, and Equifax to compete with FICO. Used by some lenders, especially for prescreened offers and credit-monitoring services.

Both produce scores on the 300-850 range. Most consumers' FICO and VantageScore differ by 10-60 points on any given bureau.

Multiple FICO versions

FICO doesn't have a single score; it has dozens of versions tuned for different lending purposes. The most common:

• FICO 8: the most-used base model. Most credit-card lenders use FICO 8.
• FICO 9: small refinements (medical debt weighted less, paid collections ignored).
• FICO 10 and FICO 10T: most recent (2020). Includes "trended data" (your balance pattern over time).
• FICO Auto Score (versions 8-10): tailored for auto-loan lenders. Slightly different weighting.
• FICO Bankcard Score (versions 8-10): tailored for credit-card lenders.
• FICO Mortgage Score (versions 2, 4, 5): mortgages still use these older models. Significant scoring differences from FICO 8.

Critical for mortgage shoppers: lenders pull FICO 2, 4, or 5 depending on the bureau (FICO 2 from Experian, FICO 5 from Equifax, FICO 4 from TransUnion). These older scores weight medical collections, late payments, and account-age differently than FICO 8.

Different scores from different bureaus

Each of the three credit bureaus (Experian, TransUnion, Equifax) maintains its own credit file on you. The data differs because some lenders only report to certain bureaus. Even with the same scoring model, your score can vary 10-30 points across bureaus.

Some examples of bureau-specific data:

• Some smaller credit unions report to only one bureau.
• Some accounts get reported with different open dates or balances.
• Disputes and corrections happen at one bureau but not others until updated.
• Hard inquiries from a particular pull only show at the bureau pulled.

Which score does each lender use

Credit cards

Most issuers use FICO 8 or FICO Bankcard Score 8. Specific bureau varies:

• Chase: usually Experian, sometimes Equifax.
• Amex: usually Experian.
• Capital One: pulls all three.
• Citi: usually Equifax or Experian.
• Discover: Experian.
• Bank of America: Experian or TransUnion.

Mortgages

Mortgage lenders are required by law (Fannie Mae / Freddie Mac guidelines) to use older FICO models:

• FICO Score 2 from Experian.
• FICO Score 4 from TransUnion.
• FICO Score 5 from Equifax.

They take the middle of the three scores. Notably, these older models weight medical collections more heavily and ignore some refinements in newer models.

Some mortgage lenders are starting to use FICO 10T (the newest model with trended data), but adoption is gradual.

Auto loans

Auto lenders typically use FICO Auto Score 8, 9, or 10. These weight auto-payment history more heavily than the base model.

Apartment rentals

Most landlords use VantageScore 3.0 or 4.0 from one or multiple bureaus. Some use a flat "ResidentScore" from Experian RentBureau that's closer to FICO.

Employment background checks

For jobs that include credit checks, most use a non-FICO custom report. The score itself is not typically reported; the report is reviewed for late payments, judgments, etc.

Free monitoring tools, which score they show

Credit Karma

Free, shows VantageScore 3.0 from two bureaus (TransUnion and Equifax). Real-time monitoring with alerts.

Caveat: Credit Karma's VantageScores tend to run higher than FICO. Don't take a 740 VantageScore as "definitely 740 FICO."

Experian.com (free FICO 8)

Free FICO 8 score from Experian. Most actionable score for most credit-card decisions.

Bank and issuer apps

Most major banks/issuers offer a free FICO score in their app:

• Discover: free FICO 8 from Experian.
• Chase Credit Journey: VantageScore 3.0 from Experian.
• Amex MyCredit Guide: FICO 8 from Experian.
• Capital One CreditWise: VantageScore 3.0 from TransUnion.
• Bank of America: FICO 8 from TransUnion.
• Citi: FICO 8 from Equifax.

Mix and match to monitor multiple bureaus.

myFICO.com

Paid subscription ($20-40/month) that shows all FICO versions including mortgage scores from all 3 bureaus. Worth it only if you're actively shopping for a mortgage and want precise visibility into the scores lenders will pull.

annualcreditreport.com

Federally mandated free credit reports from all three bureaus (no scores attached). Critical for checking that your bureau data is correct. Free weekly access since 2020.

Why your scores differ even on the same bureau

Same bureau data, different score: comes down to model weighting differences.

Utilization treatment

VantageScore 3.0 is more sensitive to high utilization than FICO 8. A single card maxed out can hit VantageScore harder.

Recent inquiry treatment

FICO 8 deduplicates auto/mortgage inquiries within a 45-day window. VantageScore 3.0 uses 14 days. Different windows = different scores during rate-shopping periods.

Trended data (FICO 10T)

FICO 10T weights your balance trend over the last 24 months. If you've been paying down, you score higher. If you've been growing balances, you score lower. Older models don't consider trends.

New credit treatment

FICO 8 weights new credit (recent applications) at 10%. VantageScore 3.0 emphasizes it slightly more.

Strategy implications

For credit-card applications

Use Discover's free FICO 8 from Experian as your baseline. Most card issuers pull a similar score from the same bureau. Credit Karma's VantageScore is directionally useful but inflated.

For mortgages

Subscribe to myFICO temporarily (1-3 months) before applying for a mortgage. See your real FICO 2/4/5 scores. Address any gaps (medical collections, late payments) before the lender pulls.

For monitoring

Set up free score tracking from at least 3 sources covering all 3 bureaus. Monitor monthly. Sudden drops indicate either an error to dispute or a fraudulent account opened in your name.

For disputes

Dispute errors at the bureau where the error appears, not all three. Bureaus correct independently.

Recap

• FICO is the dominant scoring system; VantageScore is the secondary one (used by Credit Karma and some lenders).
• Multiple FICO versions exist. Most credit-card lenders use FICO 8. Mortgage lenders use older FICO 2/4/5.
• Each bureau (Experian, TransUnion, Equifax) maintains independent data. Same scoring model produces different scores on each.
• Credit Karma shows VantageScore, directionally useful but tends to run higher than FICO.
• For credit-card decisions, monitor FICO 8 free via Discover, Amex MyCredit Guide, etc.
• For mortgages, briefly subscribe to myFICO to see the FICO 2/4/5 scores lenders will actually pull.
• Disputes go to the specific bureau showing the error, not all three.