Mortgage lenders use credit scores to help assess repayment risk, determine whether an application fits a loan program, and set loan pricing. A FICO score matters, but it does not decide approval by itself: lenders also assess the credit report, income, debts, assets, savings, and ability to repay. The score model and version can vary, so the score you see in a consumer app may not be the one used for your mortgage.
What happens when a mortgage lender checks your credit?
The lender obtains credit information from reporting companies and uses it to assess your application. A credit score is calculated from data in a credit report; it is not the report itself. Differences or errors among bureau files can therefore affect the score a lender sees and may influence eligibility or pricing. The Consumer Financial Protection Bureau (CFPB) says most mortgage lenders use FICO scores, and lenders commonly review reports from Equifax, Experian, and TransUnion. For rate decisions, they often use the middle score among the scores they receive—not necessarily the highest one. CFPB: Does my credit score affect my ability to get a mortgage loan or the mortgage rate I pay?
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FICO is a credit-score brand, not a single score used in every situation. It offers multiple versions, and different models may assess report information differently. A consumer-facing score may therefore differ from a mortgage score calculated with a lender’s model and bureau data. CFPB: What is a credit score?
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How a FICO score affects approval and mortgage pricing
It helps estimate risk
A score gives the lender one way to estimate the likelihood that a borrower will repay as agreed. Higher scores generally correspond to better rate offers, but there is no score that guarantees approval or a particular interest rate. Loan type, lender standards, credit-report details, and the rest of the application all matter. CFPB guidance on mortgage scores and rates
It is one part of a repayment assessment
For covered dwelling-secured loans, federal ability-to-repay rules require a reasonable, good-faith assessment that the borrower can repay. The assessment includes income or assets, debt obligations, and debt-to-income ratio or residual income. The rule does not set one universal DTI limit or credit-score cutoff for all mortgages. 12 CFR 1026.43
Which score model might a mortgage lender use?
The model can depend on the loan program and how the loan will be underwritten or delivered. For loans sold to Fannie Mae or Freddie Mac, policy is changing: as of September 9, 2026, FHFA says all lenders approved by those enterprises may use VantageScore 4.0 for eligible loans without prior written approval. Classic FICO remains an option. This is not a requirement that every lender use VantageScore, nor does it mean all mortgage types or government programs follow the same model rules. FHFA’s September 9, 2026 policy announcement
Fannie Mae delivery rules
Fannie Mae’s current guidance allows VantageScore 4.0 only for eligible loans assessed through its automated underwriting path, Desktop Underwriter. The lender must request the score from all three bureaus and use the same model for all borrowers on a loan. Manually underwritten loans continue to use Classic FICO under that guide. FICO Score 10T has been approved by FHFA but is not yet available for Fannie Mae loan deliveries. Fannie Mae credit score requirements
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Is there a minimum FICO score for a mortgage?
There is no all-purpose approval score. CFPB consumer guidance says some loans may require a minimum score of 620, but requirements vary. It describes the following broad patterns—not lender rules or guaranteed rate quotes:
| Score range | General pattern in CFPB guidance |
|---|---|
| Below 620 | Borrowers typically have trouble qualifying. |
| 620–680 | Borrowers often have the fewest choices and may have difficulty, depending on loan type and lender. |
| 680–740 | Borrowers generally pay somewhat higher rates. |
| Mid-to-high 700s or above | Borrowers generally receive the lowest rates and have the broadest choices. |
CFPB’s bands are broad consumer guidance, not formal cutoffs; it does not state a publication year for this guidance. A lender’s requirements and the full application determine the outcome. CFPB: Credit scores and your mortgage
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How loan type changes the comparison
FHA loans can allow lower scores than most conventional loans, according to the CFPB, but a lower score threshold alone does not establish that an FHA loan is the better deal. Compare actual offers, including mortgage insurance and total loan costs, alongside rates and eligibility. CFPB: FHA loans
When comparing options, ask about the applicable score model and lender cutoff, whether automated or manual underwriting applies, and how the lender evaluates income, assets, debts, and other factors. Also compare down payment, mortgage insurance, fees, interest rate, and total cost; a score-model option does not remove the other underwriting and pricing considerations.
Quick Recap
What you can do before and during a mortgage application
- Review your credit reports. Check the reports a lender may review and dispute errors well before applying. Correcting inaccurate data can matter because scores are calculated from report information. CFPB guidance on mortgage scores
- Ask the lender what it will use. Confirm the loan program, score model and version, bureau data, and whether the application will go through automated or manual underwriting. This is especially relevant while VantageScore 4.0 is becoming available for eligible enterprise loans.
- Avoid unnecessary new credit. A new credit-card or auto-loan application can lower scores, so avoid unnecessary applications shortly before or during the mortgage process. CFPB: How does shopping for a mortgage affect my credit score?
- Shop mortgage lenders in a focused period. CFPB says multiple mortgage credit checks within a 45-day window are recorded as one inquiry. This window is stated in guidance last reviewed August 28, 2026. CFPB mortgage-shopping guidance
- Compare complete offers. Evaluate the rate, fees, mortgage insurance, down payment, and total cost—not just a score threshold or advertised rate.
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