What This Guide Covers
- The FHA compensating factor framework: which factors expand DTI limits and by how much
- VA residual income as a compensating factor: how it is calculated by region and family size
- What documentation an underwriter actually needs to count each factor
- The difference between a listed compensating factor and a documented compensating factor
FHA Manual Underwriting DTI Limits and Compensating Factors
When an FHA loan goes to manual underwriting, the default DTI limits are 31% front-end (housing expense) and 43% back-end (total debt). Compensating factors allow these limits to expand, but only if each factor is documented, not just mentioned.
With one qualifying compensating factor, the limits expand to 37/47. With two, they expand to 40/50. There is no further expansion above 50% back-end DTI regardless of how many factors are present.
The five compensating factors that count for FHA manual underwriting:
1. Verified cash reserves of at least 3 months of PITI (12 months for 2-4 unit properties) 2. Minimal payment shock: new housing payment does not exceed current rent or mortgage by more than 5% (or is equal to or less) 3. No discretionary debt: all installment debt is being paid off, no revolving balances 4. Additional income not used in qualifying: documented income that the borrower has but that was not counted 5. Residual income: borrower's income after all monthly obligations meets the VA residual income guidelines for their region and family size
For VA manual underwriting, the framework uses residual income as the primary analysis. The VA publishes regional income thresholds by family size. A veteran in California whose residual income (income after all obligations) exceeds the regional threshold has a strong compensating factor that supports manual approval.
Required Documentation
- ✓Bank statements for all accounts used to document cash reserves (2 months minimum)
- ✓Landlord letter and 12 months cancelled rent checks (for payment shock factor)
- ✓Documentation of income not used in qualifying (if additional income factor)
- ✓VA residual income calculation worksheet with supporting documentation
- ✓Letter of explanation for each derogatory item in the credit history
- ✓Employment verification confirming two-year history and continuance
What Most Lenders Get Wrong
- 1.Listing compensating factors in the submission without documentation. Underwriters cannot approve a factor that is claimed but not evidenced in the file.
- 2.Using payment shock as a factor when the borrower's current housing cost is $0 (living with family). No current housing cost means no payment shock comparison is possible.
- 3.Confusing VA residual income as a factor for FHA files. Residual income is a formal FHA compensating factor, but the VA table amounts are used as the benchmark regardless of loan type.
- 4.Submitting a manual underwriting file without a narrative. A well-written loan officer narrative that explains each compensating factor and summarizes the file story is not required, but it dramatically reduces conditions and decision time.
Building the Compensating Factor Package as a Former Underwriter
When I was reviewing manual underwriting files from the other side of the desk, I saw two types of submissions. The first was a file with conditions written in the margins: missing documentation, unclear income, unsubstantiated claims. The second was a file that told its story before I asked a single question.
The second type of file had a coversheet explaining the borrower's situation, a clear compensating factor analysis with evidence, a letter of explanation for every derogatory item, and complete documentation that anticipated every question I would have asked. Those files moved faster and approved at a higher rate.
Building a manual underwriting compensating factor package means assembling the documentation for each factor you plan to claim, writing a loan officer narrative that presents the case clearly, and ordering the file the way the underwriter needs to read it. A borrower who needs two compensating factors to hit the 40/50 DTI expansion should have both factors fully documented before the file is submitted, not assembled in response to conditions.
The Loan Officer Narrative: Why It Matters on Manual Files
A loan officer narrative is not required for automated underwriting submissions. For manual underwriting, it is not technically required either, but it is one of the highest-leverage tools available for getting a file approved.
An effective manual underwriting narrative covers the borrower's background and employment history in plain language, explains any derogatory items in the credit history with context and documentation, identifies and documents each compensating factor being claimed, and summarizes why the loan is a sound credit decision despite the characteristics that triggered manual review.
Underwriters who receive a well-organized narrative spend less time building their own file story and more time confirming the one presented. Conditions are reduced because the narrative anticipates them. Approval timelines are shorter because the underwriter does not need to send conditions to gather information the narrative already provided.
For Bakersfield borrowers who have been declined elsewhere, many of those denials came from files submitted without a narrative. The loan may have been approvable, but the underwriter had no guidance on how to credit the compensating factors. Dan writes detailed loan narratives for every manual underwriting submission.
Conventional Manual Underwriting vs FHA Manual Underwriting
Manual underwriting is most commonly discussed in the FHA context, but conventional loans can also go to manual underwriting when the automated system (Desktop Underwriter or Loan Prospector) returns a Refer or Caution decision.
Fannie Mae's manual underwriting guidelines are generally more restrictive than FHA's for high-DTI files. Conventional manual underwriting does not have the same formal compensating factor structure that allows expansion above 45% DTI. The underwriter has more discretion, which cuts both ways: a very strong file can sometimes get approved above standard limits, but there is no formula that guarantees it the way FHA's 37/47 and 40/50 expansion tiers do.
For most high-DTI borrowers in manual underwriting situations, FHA is the more predictable path. If the borrower has two strong compensating factors, the 40/50 FHA limit gives a clear target. Conventional manual approval above 45% is possible but less certain.
Manual underwriting approvals are built, not given. The underwriter works from what is in front of them. My job is to make sure the file in front of them answers every question before it is asked. Having spent years as the reviewer, I know exactly what that looks like from the other side of the desk.
Does your file need manual underwriting? Dan structures the compensating factor case correctly.
Call Dan at (661) 342-9381. He will review your specific situation and documentation in a free call.