SBA Equity Injection Requirements: Down Payment, Seller Debt & Source of Funds
Equity injection is one of the most document-sensitive parts of an SBA closing: source of funds, seller notes, standby debt, and lender conditions all need to match.
Last reviewed: May 26, 2026 by the BizLeaseCheck Editorial Team
General information, not legal or financial advice.
Overview
SBA equity injection requirements can change by program, transaction type, borrower history, lender credit policy, and the current SOP 50 10 version. Treat any fixed percentage as a current-version item to verify before relying on it.
For borrowers, the practical review is whether the down payment is documented, the money source is acceptable, seller debt is on standby if required, and every standby or subordinate creditor agreement matches the loan approval.
Topics to check
SBA states that SOP 50 10 contains origination policies and procedures for 7(a) and 504 loans.
Because equity-injection rules can be version-specific, cite the current SOP 50 10 as of 2026 and verify exact percentage or standby rules before paid promotion.
SBA SOP 50 10 landing pageSBA Form 155 is the Standby Creditor’s Agreement. SBA states that the lender may use Form 155 or its own standby agreement form.
The form’s purpose is to formalize that the standby creditor subordinates lien rights and takes no action against the borrower or collateral without the SBA lender’s consent.
SBA Form 155 — Standby Creditor’s AgreementBorrowers should expect the lender to require documentation showing where the injection money came from and whether it is borrowed, gifted, seller-financed, or already in the business.
Exact acceptable documentation depends on the active SOP, lender policy, and transaction type, so avoid relying on a generic checklist alone.
SBA SOP 50 10 landing pageSBA Form 413 is used to assess the financial situation of applicants for several SBA programs, including 7(a) and 504 loans.
The lender may compare the personal financial statement, bank records, tax documents, and closing statement to verify the injection source.
SBA Form 413 — Personal Financial StatementIf injection funds come from another loan, ask whether the lender permits it, whether repayment is on standby, and whether collateral or personal guarantees conflict with SBA lender rights.
A subordinate creditor document may affect cash flow, lien priority, and default rights even if the SBA loan closes.
SBA Form 155 — Standby Creditor’s AgreementKey takeaways
- Do not state a fixed SBA injection percentage without checking the current SOP and transaction type.
- Seller notes may need standby treatment and subordination.
- Source-of-funds documentation should be collected before closing pressure starts.
- Form 413 may be used to support personal financial review.
- Borrowed injection funds can create separate collateral and default issues.
Official resources
Legal-review notes
Guide confidence marker: Needs lawyer verification.
- Verify current SOP 50 10 equity-injection percentages, standby-debt treatment, and seller-note rules before paid promotion.
- Have counsel review borrowed injection, seller financing, gift, or affiliate-source structures.
Frequently asked questions
What equity injection percentage does SBA require?
It depends on the current SOP 50 10, program, transaction type, and lender approval. Treat exact percentages as version-specific and verify them before relying on them.
Can seller financing count toward SBA equity injection?
Sometimes, but seller debt may need to be on standby or subordinated. Review Form 155 or the lender’s standby agreement and the current SOP requirements.
What documents prove my SBA equity injection?
Common proof may include bank statements, transfer records, closing statements, loan or gift documents, tax records, and personal financial statements, depending on lender requirements.