Key takeaways
- Under 13 CFR 120.160(a), holders of at least a 20 percent ownership interest generally must guarantee the loan, and the guaranty is unlimited rather than capped at the guarantor's share.
- Ownership held through another entity still counts toward the 20 percent line, and lenders also require spouses to sign where their combined ownership reaches it.
- Under SOP 50 10 version 8.1, effective October 1, 2026, a selling owner who keeps less than 20 percent in an Owner Buyout partial change must guarantee the full loan amount for at least 2 years after final disbursement.
- Under version 8.1, when a change of ownership loan is not fully secured the lender must take available equity in personal real estate of co-borrowers, 20 percent owners and required guarantors, but need not take real estate with less than 25 percent equity.
- Rebuild the debt coverage ratio with a real owner salary and verified numbers before signing, because that ratio measures how likely the guaranty is to be called.
A personal guaranty is an individual's unlimited promise to repay the business's SBA loan if the business does not, required of every owner of 20 percent or more.
What is the SBA personal guaranty?
A personal guaranty is a promise, signed by an individual, to repay the business's loan if the business does not. Under 13 CFR 120.160(a), holders of at least a 20 percent ownership interest in the borrower generally must guarantee an SBA loan. The guaranty is unlimited: it is not capped at the guarantor's share of the business, and it is not released when the guarantor sells their shares unless the lender agrees.
That single sentence is the most consequential thing in an SBA acquisition, and the one buyers most often read past. The loan is made to the business. The guaranty makes it the buyer's debt too, secured by the buyer's personal balance sheet, for the life of the loan.
Who has to sign?
Every owner of 20 percent or more of the borrowing entity, and of any operating company the loan funds. Ownership is measured under the affiliation rules, so an owner who holds their stake through another entity is still counted. Lenders also require a guaranty from a spouse where the spouses together reach the 20 percent line, and from any owner the lender considers necessary to the credit whatever their percentage.
A seller who keeps a stake can fall under the same rule. SOP 50 10 version 8.1, effective October 1, 2026, lets a seller keep a stake only in a partial buyout or in a sale to an ESOP or cooperative. In a partial buyout, an individual who has worked in the business for fewer than 24 months may take less than half the equity and may not become the largest owner, unless the loan meets the stricter credit standards of an Initial Acquisition. A selling owner who keeps less than 20 percent must guarantee the full loan amount for at least 2 years after final disbursement. In a purchase by an outside buyer the seller cannot stay on as an owner or employee and may consult for no more than 24 months. That is one reason a small retained stake offered to close a price gap is rarely as simple as it looks.
What does the guaranty actually expose?
Everything the guarantor owns that the law does not exempt. If the business defaults and the lender liquidates the business's collateral and is still short, the lender can pursue the guarantors personally for the shortfall. In practice lenders work with borrowers who communicate and pay what they can; the guaranty is the last step in a process, not the first. But it is a real obligation, recorded, and it follows the guarantor.
The related question is the lien on a home. Every SBA acquisition loan follows the change of ownership rules in Appendix 15 of SOP 50 10 version 8.1, whichever 7(a) delivery method the lender uses, and under those rules, when business assets do not fully secure it, the lender must take available equity in personal real estate, including a residence, owned by co-borrowers, owners of 20 percent or more, and required guarantors. The lien may be limited to the shortfall, and real estate with less than 25 percent equity need not be pledged. A lien is not a foreclosure. It is a recorded interest that matters in a default and complicates a refinance or sale of the home before then.
Separately, 13 CFR 120.160(c) requires hazard insurance on all collateral for 7(a) loans above 500 thousand dollars, which the borrower pays for and which the lender will require before funding.
How does the guaranty change the buyer's decision?
It means the debt coverage check is a personal question, not a business one. A purchase that only covers its debt in the best year, with every add-back accepted, is a purchase where the guarantor is the coverage. The business behind this site that was financed with a 7(a) loan carried that guaranty for years, and the operating discipline it enforced was not optional. Every month's cash view was a month closer to the guaranty not being called.
Buyers with a spouse should have that conversation before the letter of intent, not at the closing table where the lender hands the spouse a document. A guaranty signed under time pressure by someone who did not choose the business is a strain on the household that the business will then have to carry.
Can the guaranty be limited or avoided?
Limited guaranties exist for owners below the threshold in some circumstances, and the lender decides. The 20 percent rule itself is regulation, not lender policy, and no structuring of the purchase entity removes it for a real owner. Spreading ownership across family members to keep each below 20 percent is exactly the pattern the affiliation and identity-of-interest rules exist to catch, and a lender who sees it will treat it as a reason to decline rather than a reason to waive.
How is the guaranty released?
When the loan is repaid, or when the lender agrees to release it, which normally happens only if the guarantor's stake is bought out and the remaining owners and the credit support the change. A buyer planning to bring in a partner later, or to sell a stake, should ask the lender how a guaranty release works under its policy before closing, because the answer shapes what the business can do in year 3.
What should a buyer do about the guaranty this week?
Read 13 CFR 120.160 in full, which takes 5 minutes. List every person who will own 20 percent or more, including through entities, and confirm each is prepared to sign. Rebuild the coverage ratio with a real owner salary and the seller's numbers verified, because that ratio is the guaranty's probability of being called. Then read the financing guide for where the guaranty sits in the whole structure.
Questions people ask next
Is the guaranty limited to my share of the business?
No. The guaranty required of a 20 percent or greater owner is unlimited, which means the guarantor is liable for the whole shortfall, not a percentage of it.
Will the lender take my house?
A lien on a home may be required on larger loans where business collateral falls short. A lien is a recorded interest that matters in a default and complicates a refinance. Foreclosure on a residence is rare and follows a collapse in payment and communication, not a missed month.
Does my spouse have to sign?
Where the spouses together own 20 percent or more, lenders require both to guarantee. That conversation belongs before the letter of intent, not at the closing table.
When is the guaranty released?
When the loan is repaid, or when the lender agrees to release it, usually only if the guarantor's stake is bought out and the remaining owners support the credit. Ask the lender how its release policy works before closing.
Sources
- 13 CFR 120.160, loan conditions (personal guarantees, hazard insurance) Primary source. Read 2026-09-08.
- SBA SOP 50 10, Lender and Development Company Loan Programs (versions 8 and 8.1) Primary source. Read 2026-09-08.
Program rules on this page were checked against 13 CFR 120.160, eCFR current as of 2026-09-22; SOP 50 10 version 8.1 with Technical Policy Updates, published 2026-09-25, effective 2026-10-01 on 2026-10-05 and are current through 2026-12-21. Confirm the version that governs your application with the lender.
About the author
Dr. Matty Herrera
Dr. Matty Herrera is the founder of Official Business Doctor. He writes and teaches from direct experience buying a business with cash, financing one with an SBA 7(a) loan, founding one, operating two locations with five retained employees, improving the operation, and later exiting at more than twice his equity.