For SBA lenders
Short answer
Lenders must conduct thorough due diligence at application, including comprehensive ownership and management inquiries, review of tax returns for related parties, and affirmative borrower certifications on SBA Form 1919.
Undisclosed affiliation that leads to a borrower exceeding SBA size standards is a serious eligibility issue that can result in a guaranty denial. Lenders must actively investigate potential affiliations during underwriting by reviewing organizational charts, tax returns, management agreements, and obtaining explicit certifications from borrowers about all related entities.
A lender is underwriting a $1M 7(a) loan. The borrower certifies no affiliations on Form 1919. The lender also reviews the borrower's prior tax returns for common ownership, scrutinizes the business plan for shared resources, and questions any potential common management. This proactive due diligence helps uncover any undisclosed affiliates before closing, preventing a future guaranty denial.
SOP 50 10 - Lender and Development Company Loan Programs
13 CFR Part 121 - Small Business Size Regulations
SBA Form 1919 - Borrower Information Form
Affiliation and Lending Criteria for SBA Business Loan Programs - Final Rule
Last checked 2026-06-14. Official sources control — verify before relying on any rule for a live deal.
Last reviewed 2026-06-14 · SBA sources checked through 2026-06-14. DealRoom analysis of public SBA 7(a) lending records (FY2020–present). Grounded in the current SBA rulebook; verify against the official sources above before relying on it for a live deal. Not legal, tax, or financial advice, and not an approval decision.
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