MLO Credit Help

Not all credit scores are created equal — and the score a borrower sees on their credit card app or Credit Karma is almost certainly not the score a mortgage lender will use. Understanding which scoring models apply to mortgage lending is foundational knowledge for every MLO.

Which FICO Models Are Used in Mortgage Lending?

As of 2025, most conventional and government loans still use the classic FICO models ordered from each bureau:

• Equifax: FICO Score 5 (Beacon 5.0)
• Experian: FICO Score 2 (Experian/Fair Isaac Risk Model v2)
• TransUnion: FICO Score 4 (FICO Risk Score 04)

These are older, mortgage-specific FICO versions — not the FICO 8 or FICO 9 models consumers typically see. Fannie Mae and Freddie Mac have announced a transition to FICO 10T and VantageScore 4.0 for future use, but classic FICO models remain the industry standard for most lenders today.

The Middle Score Rule

For a single borrower, the qualifying credit score is the middle score of the three bureau scores. If one bureau does not generate a score, the lower of the remaining two is used. For loans with multiple borrowers, the qualifying score is the lowest middle score among all borrowers — a critical detail when co-borrowers have disparate credit histories.

Score Range Minimums by Program

Why Consumer Scores Don't Match

Consumer-facing credit monitoring services (Credit Karma, Experian app, Capital One CreditWise) display FICO 8, FICO 9, or VantageScore models. These weigh certain factors — such as medical collections and paid collections — very differently from the mortgage FICO models. A borrower with a 680 on Credit Karma may have a 640 mortgage FICO or vice versa. Always pull a tri-merge mortgage credit report before quoting a client their qualifying score.

The tri-merge credit report is one of the most information-dense documents in a mortgage file. MLOs who know how to read it thoroughly — rather than just noting the score — are far better equipped to identify problems before they surface in underwriting and to explain the file accurately to both borrowers and underwriters.

Key Sections to Review

• Personal Information: Verify name, address history, Social Security Number, and date of birth. Address discrepancies can sometimes indicate mixed files or identity issues that need to be resolved before closing.
• Public Records: Includes bankruptcies, judgments, and tax liens. Each has program-specific waiting periods and documentation requirements. A clear public records section is required for most loan programs.
• Collections: Review all collections for balance, creditor type (medical vs. non-medical), and open/closed status. FHA and conventional treat medical collections differently from other types — know the rules for each program.
• Tradelines: Review each open and closed account for payment history, high credit, current balance, and credit limit. Late payment history (30/60/90/120-day lates) is reported by month and year — identify the most recent derogatory event, as recency matters more than frequency for many scoring models.
• Inquiries: Hard inquiries from mortgage lenders in the 90–120 days before closing may require letters of explanation. Multiple recent inquiries from auto dealers or credit cards may signal new debt the borrower has not disclosed.

Score Factor Codes

Each bureau score comes with 4–5 "reason codes" that explain what is most negatively affecting the score. These are among the most underutilized tools in mortgage credit analysis. Reading the reason codes tells you exactly what to address to move the score — rather than guessing.

Common reason codes include:

• High utilization on revolving accounts (most common and most improvable)
• Derogatory public records or collections
• Lack of account diversity or thin file
• Too many recent inquiries
• Short account history
• High proportion of balances to credit limits

Duplicate Accounts & Mixed Files

Duplicate tradelines — the same debt reported multiple times under different account numbers — artificially inflate the debt-to-income ratio and can suppress the score. Identify and flag these for the underwriter. Mixed files (accounts belonging to a different person appearing on the report, often due to similar names or SSNs) require formal dispute resolution and can cause significant delays if not addressed at intake.

Inaccurate credit is a serious and common issue. According to the FTC, a significant percentage of consumers have errors on at least one of their credit reports. For mortgage borrowers, those errors can mean the difference between qualifying and not qualifying. MLOs must understand both when to encourage disputes and what complications disputes create during the mortgage process.

Types of Credit Inaccuracies

• Accounts that don't belong to the borrower (mixed file or identity theft)
• Incorrect late payment history (payments reported late that were actually on time)
• Paid collections still showing a balance
• Discharged bankruptcy debts still showing as active balances
• Accounts exceeding the 7-year reporting limit (10 years for bankruptcy)
• Outdated personal information that may be tied to an incorrect file
• Duplicate tradelines from the same creditor under different account numbers

The Dispute Problem for Mortgage Applicants

Here is a critical point every MLO must understand: when a tradeline is under active dispute, it is often excluded from the credit score calculation. This means the score may be artificially inflated while the dispute is pending. Fannie Mae's Desktop Underwriter (DU) specifically checks for disputed tradelines and may issue an "ineligible" finding or a requirement to remove the dispute before the loan can be approved.

For FHA loans, an active dispute on a derogatory tradeline with a balance over $1,000 (or a disputed collection) may require the dispute to be removed before FHA will allow AUS approval — even if removing the dispute causes the score to drop.

Fannie Mae's Five DU Codes for Inaccurate Credit

When inaccurate credit exists that cannot or should not be disputed (e.g., timing issues mid-transaction), Fannie Mae's Desktop Originator/Underwriter allows the MLO to use specific credit codes to submit the file with a notation explaining the inaccuracy:

• Code EX: Account not the borrower's (mixed file)
• Code EC: Account included in bankruptcy
• Code BK: Derogatory occurred as a result of a documented extenuating circumstance
• Code IC: Account being paid by a business
• Code FC: Account associated with a prior foreclosure

Using these codes correctly allows DU to recalculate the risk assessment with the corrected context and may change the AUS recommendation.

When to Dispute vs. When to Wait

• Dispute before application: If the borrower is not yet in the mortgage process and has verifiable errors, disputing through the bureaus (or via the creditor directly) is the right move. Give the dispute 30–45 days to resolve before pulling mortgage credit.
• Do not start new disputes during an active mortgage: Active disputes create AUS complications. If a dispute is already in progress when the file goes to underwriting, it may need to be removed — which can take 30+ days and may require a new credit report.
• Rapid Rescore: For verified inaccuracies that need to be corrected quickly, a rapid rescore through your credit reporting vendor can update a bureau within 3–5 business days — a much faster option than waiting for the standard dispute process during an active loan.

Collections, charge-offs, and judgments are among the most common derogatory items MLOs encounter. Each program treats them differently — and in many cases, paying off a collection can help or hurt the credit score depending on the circumstances. Understanding the rules by program type is essential.

Collections — Program Rules

The Danger of Paying Off Old Collections

Counterintuitively, paying off a collection account can sometimes lower the credit score in the short term. When a collection is paid, the account is updated to "paid collection," but the derogatory history (late payments, collection status) remains on the report and may be "re-aged" — appearing as a more recent event to the scoring model. This is a well-documented phenomenon with older FICO models. Before advising a borrower to pay a collection, consider using a rapid rescore simulation tool to model the score impact.

Charge-Offs

A charge-off occurs when a creditor writes off a debt as uncollectible — typically after 180 days of non-payment. The account remains on the credit report and continues to affect the score. For mortgage purposes:

• Charge-offs do not automatically require payoff under conventional guidelines
• FHA and USDA may require payoff or a satisfactory explanation depending on the balance and age
• Even if payoff isn't required, the underwriter may condition on a letter of explanation

Judgments

Unpaid civil judgments are a more serious issue. Under most programs, an outstanding judgment must be paid in full or on an established payment plan before closing. Judgments may also appear as liens against the property — which would need to be cleared at or before settlement regardless of program requirements. Check for judgments in both the credit report and a title search. Do not assume the credit report captures all outstanding judgments.

Bankruptcy, foreclosure, short sale, and deed-in-lieu are major derogatory events that impose mandatory waiting periods before a borrower can qualify for a new mortgage. These periods vary by event type and by loan program. Understanding the timelines — and the exceptions — is a core MLO competency.

Waiting Periods by Event & Program

Extenuating Circumstances

Most programs allow reduced waiting periods if the derogatory event was caused by documented extenuating circumstances — typically defined as a non-recurring event beyond the borrower's control that significantly reduced their income or increased their obligations (e.g., serious illness, death of a wage earner, natural disaster). Divorce and financial mismanagement generally do not qualify as extenuating circumstances under conventional guidelines. Documentation requirements are substantial and must be reviewed with the underwriter before relying on a shortened waiting period.

Bankruptcy Still Open (Chapter 13)

A borrower in an active Chapter 13 repayment plan may be eligible for a new mortgage under certain programs — including FHA and VA — provided they have made 12 months of on-time plan payments and have written permission from the bankruptcy trustee. The trustee letter must be in the file before submitting to underwriting. This is one of the most misunderstood areas in mortgage credit — many MLOs incorrectly turn these borrowers away.

Confirming Discharge Dates

The waiting period begins from the discharge date (for Chapter 7) or dismissal/discharge date (for Chapter 13) — not from the filing date. These dates can differ by months or years. Always obtain the full bankruptcy documentation — including the discharge order — rather than relying on what the borrower remembers. PACER (Public Access to Court Electronic Records) is a searchable federal court database that can confirm bankruptcy filing and discharge dates.

Automated Underwriting Systems (AUS) — primarily Fannie Mae's Desktop Underwriter (DU) and Freddie Mac's Loan Product Advisor (LPA) — generate specific findings that guide the underwriting process. Credit-related findings are among the most common and can range from simple documentation conditions to findings that require additional action before a loan can proceed.

Common AUS Credit-Related Messages

• Disputed Tradeline Warning: DU will flag accounts coded as disputed on the credit report. If the disputed accounts are derogatory and have a balance, the loan may be ineligible until the dispute is removed. The MLO must resolve the dispute or use the appropriate DU credit code to explain the inaccuracy.
• Credit Report Expiration: Mortgage credit reports are valid for 120 days (4 months) for most programs. If the file approaches or exceeds this window, a new credit report and new AUS run may be required — and a new score could change the eligibility determination.
• Collections or Public Records: DU may issue a message noting outstanding collections or public records and require documentation or payoff. Review the specific language carefully — "may require" is different from "must." Underwriter interpretation matters.
• Thin File / Insufficient Credit History: Borrowers with fewer than 3 open tradelines or a short credit history may receive a "refer with caution" finding from DU. FHA and VA both allow manual underwriting for these borrowers with appropriate compensating factors.
• Refer with Caution: This finding means the AUS was unable to approve the file and is referring it to manual underwriting. This is not a decline — but it requires an underwriter to manually evaluate the file against program guidelines, and the documentation bar is higher.

Manual Underwriting vs. AUS Approval

FHA and VA both permit manual underwriting for files that receive a "Refer" from AUS. Manual underwriting requires stronger compensating factors — such as a longer payment history, larger down payment, significant cash reserves, or documented extenuating circumstances. If a file receives a Refer, evaluate whether the borrower has compensating factors before abandoning the path forward.

Running Multiple AUS Scenarios

If a file does not receive an AUS approval on the first run, consider:

• Running DU and LPA — sometimes one system approves where the other refers
• Adjusting the loan amount, LTV, or down payment to test the impact on findings
• Removing a co-borrower whose credit is dragging the file (if income allows qualification without them)
• Re-running after a rapid rescore if the credit score was the primary barrier

Many borrowers are closer to qualifying than they realize — and targeted credit improvement strategies can move a file from declined to approved in weeks rather than months, when the right levers are pulled. The key is identifying the specific factors suppressing the score and addressing those first.

1. Read the Score Factor Codes First
   Before recommending any action, identify the top 4–5 reason codes on each bureau score. These codes tell you exactly what the model is penalizing. Addressing anything other than the top reason codes produces minimal score improvement. Let the codes guide the strategy.
2. Pay Down Revolving Credit Card Balances
   Credit utilization — the ratio of balance to credit limit on revolving accounts — is the most responsive factor in the scoring model. Getting utilization below 30% per card (and below 10% overall) can produce significant score gains quickly. This is almost always the highest-impact action when utilization is identified as a reason code.
3. Use Rapid Rescore to Model Changes
   Before a borrower takes any action (paying a balance, paying a collection, opening a new account), use a rapid rescore simulation to model the predicted score impact. Most credit vendors offer a "what-if" simulation tool. This prevents taking an action that unintentionally lowers the score.
4. Do Not Open New Accounts or Incur New Debt
   New credit inquiries temporarily reduce scores. A new account opening — even a positive one — introduces a new account with $0 history, which can reduce the average age of accounts and temporarily suppress the score. Instruct borrowers to make no new credit applications from pre-approval through closing.
5. Become an Authorized User on a Strong Account
   If a borrower has a thin file or low average account age, being added as an authorized user on a family member's long-standing, low-utilization credit card can boost the score relatively quickly. The primary cardholder's account history is added to the borrower's file.
6. Address Reported Late Payments With Goodwill Letters
   For borrowers with isolated late payment incidents — particularly on otherwise strong accounts — a goodwill letter to the creditor requesting removal of the late payment notation can sometimes work, especially for long-standing customers with a strong payment history before and after the incident. Results are not guaranteed, but the effort costs nothing.
7. Resolve Verified Inaccuracies Via Rapid Rescore
   If the credit report contains verifiable errors (wrong balance, incorrect late payment, account that isn't the borrower's), correcting them via a rapid rescore is the fastest path to an updated score during an active mortgage process. Obtain documentation from the creditor and submit to your credit vendor — corrections typically reflect in 3–5 business days.
8. Refer Complex Cases to a HUD-Approved Counselor
   For borrowers with multiple derogatory items, thin files, or situations that require a longer-term credit rehabilitation plan, refer them to a HUD-approved housing counselor. These counselors provide free or low-cost credit guidance in the context of homeownership goals — and can work with the borrower over 3–6 months to prepare them for a stronger application.

Below are key resources and reference tools for MLOs working credit-challenged files. Bookmark these for quick access when scenarios require deeper analysis or escalated documentation.

Credit Report & Scoring

• AnnualCreditReport.com — The official free bureau report source (Equifax, Experian, TransUnion). Useful for pre-application review before pulling a mortgage tri-merge. Now provides weekly free access.
• MyFICO.com — Allows consumers to purchase FICO scores in the specific mortgage versions (FICO 2, 4, 5) — useful for borrowers who want to see the actual mortgage score before applying.
• PACER (pacer.uscourts.gov) — Federal court records for confirming bankruptcy filing dates, discharge dates, and case status.
• CreditXpert What-If Simulator — Available through most mortgage credit vendors. Models score changes before actions are taken. Essential for rapid rescore planning. Ask your credit vendor about access.

Agency Guidelines

• FHA Handbook 4000.1 (Section II.A.4.a) — Credit history, derogatory credit, collections, and disputed tradeline rules for FHA loans.
• Fannie Mae Selling Guide (B3-5) — Credit score requirements, tradeline requirements, and dispute handling for conventional loans. Includes DU message guidance.
• Freddie Mac Seller/Servicer Guide (Chapter 5201) — Freddie Mac credit eligibility, collections, judgments, and LPA findings guidance.
• VA Lenders Handbook (Chapter 4) — Credit history and derogatory credit standards for VA loans, including manual underwriting compensating factors.
• USDA HB-1-3555 (Chapter 10) — Credit requirements and manual underwriting standards for USDA Rural Development loans.

Client Talking Points

• "The score you see on Credit Karma is not the score I use for a mortgage — let me pull the actual mortgage report so we're working with the right numbers."
• "Paying off a collection isn't always the answer. Before you do anything, let's model the impact so we know exactly what will happen to your score."
• "A bankruptcy doesn't automatically mean you can't buy a home. Depending on when it was discharged and what program you use, you may be closer than you think."
• "Don't open any new credit, finance anything, or even apply for a store card until after we close — any new inquiry or account can affect your file."
• "If your score needs some work, we can make a plan. Many of my clients have gone from not qualifying to closing in 60–90 days with the right targeted steps."

HUD-Approved Counseling for Credit Prep

For borrowers who need extended credit rehabilitation guidance — especially those with multiple derogatories, thin files, or complex financial histories — refer them to a HUD-approved housing counseling agency. Counselors can work with borrowers over 3–12 months to build a plan that bridges the gap between their current situation and mortgage readiness. Find agencies at hud.gov/findacounselor.