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There is no single credit score used by every lender. A score is produced when a particular scoring model evaluates information in a particular credit report at a particular time. Differences between scores can therefore be normal: the model, report data, calculation date, or loan product may differ.

How a credit scoring model works

A credit score is a numerical estimate of credit behavior, such as the likelihood of repaying a loan on time. The Consumer Financial Protection Bureau (CFPB) explains that companies use a mathematical formula, called a scoring model, to turn credit-report information into a score. A score is an output of that calculation—not a complete picture of your finances or a lender’s final decision.

Credit reports contain information about accounts and payment history, balances, applications, and certain negative events. A scoring model evaluates selected details in that report according to its own formula. The formulas are proprietary, so public descriptions can explain broad factors but cannot reproduce every lender’s calculation. CFPB: What is a credit score?

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Why your scores can be different

Two scores can differ without either being wrong. Before comparing them, check what each score represents:

  • Model and version: FICO and VantageScore are separate scoring-model brands, and each may have multiple versions. Different versions can assess the same report differently. FICO is not another name for all credit scores. CFPB: What is a FICO score?
  • Credit bureau report: The information held by one reporting company may not be identical to another’s. An account, balance, or correction may appear in one report but not another.
  • Calculation date: Report information can change as balances and payments are updated, so scores generated on different dates may not use the same snapshot.
  • Loan product: A lender may select a model suited to the type of credit being considered. Certain FICO versions are used in mortgage lending, for example.
  • Consumer-facing versus lender score: A score shown by a consumer service is not necessarily the model, version, or bureau data a lender uses.

When comparing scores, note the model and version, the bureau report used, the date generated, and whether the score is relevant to the product you plan to apply for. A score range can also vary by company; many scores fall within 300 to 850, but that range is not universal. CFPB: Understand your credit score.

What information commonly affects a score

Models may evaluate payment history, debt and account balances, credit use relative to available limits, account age and type, new applications, and negative report information such as collections, foreclosure, or bankruptcy. The influence of each factor depends on the model and version. Paying on time and managing debt are common priorities, but no public factor list is a guaranteed formula for every score.

FICO’s published factor overview

myFICO describes these general-population weights for FICO Scores:

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Factor myFICO overview
Payment history 35%
Amounts owed 30%
Length of credit history 15%
New credit 10%
Credit mix 10%

These figures are myFICO’s broad overview, not guaranteed weights for an individual or every FICO version. myFICO says the importance of categories can vary with a person’s credit profile and the information in the report. Other scoring models may differ. myFICO: How are FICO Scores Calculated?

How lenders use a score

A score can inform a credit decision, but it does not necessarily decide the application by itself. A lender may also consider other information provided with the application. The score’s meaning depends on the model and product, so a number from a credit-monitoring service cannot by itself confirm what a lender will see or whether you will qualify.

What to do if a credit application is denied

If a denial is based on a consumer report, use the notice to identify the reporting company and the reasons the creditor gave. The notice generally includes the score used and key factors where applicable, and explains your right to obtain a free report from that company within 60 days.

  1. Read the adverse-action notice. Identify the principal reasons for the decision and the reporting company named in the notice. If the creditor relied on a report, follow the notice’s instructions to request your free report within 60 days.
  2. Compare the report with your records. Check account status, balances, payment history, and any negative information for errors or incomplete details.
  3. Check the score factors. Use the factors identified in the notice or score information to understand what the model highlighted. They describe factors considered; they do not necessarily mean the report contains an error.
  4. Dispute inaccurate or incomplete information. You can dispute it with the reporting company and the company that supplied the information (the furnisher). Keep copies of your report and supporting records.

A creditor must give specific principal reasons for adverse action. The CFPB says that using a complex algorithm, including artificial intelligence or machine learning, does not excuse a creditor from providing an adequate explanation. Under Regulation B, the stated reasons must accurately describe factors actually considered or scored. CFPB Circular 2022-03 and Regulation B, 12 CFR § 1002.9.

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For more on the denial notice and next steps, see the CFPB’s guide: What can I do if my credit application was denied because of my credit report?

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How to check your reports

You are entitled to one free report every 12 months from each nationwide reporting company through AnnualCreditReport.com. The CFPB’s consumer-reporting page also describes a temporary offer of up to six additional Equifax reports during each 12-month period through December 2026; check the page for current availability and terms. You can dispute information you believe is inaccurate or incomplete. CFPB: Consumer reporting companies.

Checking a report does not mean your score must change. The useful first step is to confirm that the underlying information is accurate, then consider the model’s stated factors.

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