Manual Underwriting for FHA Loans in 2026: When It Is Required and How to Build the File

FHA manual underwriting is required when the automated underwriting system returns a refer or when the borrower's circumstances cannot be evaluated accurately by AUS. Understanding the specific DTI caps, compensating factor requirements, and tradeline standards for manual FHA is essential for any originator working with credit-challenged clients.

When FHA Manual Underwriting Is Required

• ✦DU or LP returns a refer/ineligible finding on an FHA loan
• ✦FICO below 620: most lenders have overlays preventing AUS submission below this threshold
• ✦Derogatory credit with insufficient independent tradeline history
• ✦Authorized user accounts constitute the primary credit profile
• ✦Any FHA file flagged by the lender for manual review based on risk factors

FHA Manual DTI Caps

Standard manual underwrite DTI limits are 31% housing ratio and 43% total DTI. With one acceptable compensating factor, limits expand to 37% housing and 47% total. With two acceptable compensating factors, limits expand to 40% housing and 50% total. Acceptable compensating factors include verified liquid reserves of three or more months PITI, no discretionary debt, minimal payment increase compared to current housing expense, documented additional income not reflected in qualifying income, and verified residual income meeting VA guidelines.

Tradeline Requirements for Manual FHA

Minimum three tradelines with 12-month history in the borrower's own name. No late payments in the prior 12 months. All collections and judgments must be addressed through payoff or an active payment plan. Medical collections are generally excluded from this analysis. If the borrower does not have three independent tradelines, non-traditional credit covering rent, utilities, cell phone, and insurance can supplement the file.

Building a Strong Manual File

Every derogatory event needs a letter of explanation with a clear timeline and supporting documentation. Evidence of compensating factors should be assembled at the time of application: bank statements for reserves, payoff statements, rental verification documentation. Employment gaps of more than one month require written explanation. The underwriter reads the narrative of the file; a well-organized manual submission with clear explanations for every adverse item closes significantly faster than a disorganized one.