SBA SOP 50 10 8.1: what changed, and what buyers keep getting wrong

What changed, and which rules apply to your deal

SBA lending runs on the Standard Operating Procedure (SOP), the rulebook lenders underwrite 7(a) loans against. SOP 50 10 8.1 was published on September 25, 2026 and took effect on October 1, 2026. It replaces SOP 50 10 8, which took effect in June 2025, and it gathers the rules for buying a business into one place, Appendix 15, which overrides the rest of the SOP wherever the two conflict.

Which version your loan falls under depends on its dates, so ask your lender which SOP your file will be underwritten against, and get the answer in writing before you price a deal around seller financing. Broker summaries of the transition often contradict each other. The lender who underwrites your deal is the only source that binds.

Separately, SBA changed who can own an SBA-financed business. Since March 1, 2026, every owner and SBA-required guarantor must be a US citizen or US national whose principal residence is in the US. Green card holders, who qualified before, no longer do.

The four deal types, and why most buyers are an Initial Acquisition

Appendix 15 sorts every change of ownership into one of four types: Initial Acquisition, Business Expansion, Owner Buyout, and ESOP or cooperative. Each has its own equity, cash-flow and due diligence rules, and the lender records which type your deal is.

Initial Acquisition is the default. It's any deal that makes someone the new majority or largest owner who wasn't already an owner, or who has worked at the business for less than 24 months. A first-time buyer purchasing a business from a retiring owner is almost always an Initial Acquisition, and it carries the strictest rules.

Cash flow, equity and valuation: the numbers that moved

Debt service coverage for an Initial Acquisition must be at least 1.25x, up from the 1.15x floor in SOP 50 10 8. The lender tests it on the last fiscal year, or the average of the last two, using historical or adjusted figures. Strong projections won't carry a deal that misses on its actual history. Owner Buyouts are also held to 1.25x, and Business Expansions to 1.15x.

The 10% minimum equity injection for an Initial Acquisition can't be reduced or waived. It's measured against total project cost, meaning the price plus closing costs and any working capital in the loan. Lenders can still waive it for Business Expansions and Owner Buyouts when the business has enough liquidity to keep operating.

The business valuation now caps the deal's debt. It has to support the business purchase price, which excludes any real estate. Anything paid above the valuation must be equity, and all of the debt used to buy the business, including any seller note that isn't on full standby, can't exceed it.

At a business purchase price of $3 million or more, an Initial Acquisition or Business Expansion also needs a Quality of Earnings report. The $3 million is measured before your equity or any seller note, so the financing structure can't bring a deal under it. The report must be prepared for the lender, not by or for the seller, and it has to include a cash proof that reconciles bank statements to the income statement and tax returns. If you commission your own QoE early, the lender can have one of its vendors review it rather than ordering a new one. The lender then tests coverage on the QoE's earnings and cuts the loan if they don't support the price.

Seller notes, the seller's transition and earn-outs

The seller-note rule itself didn't change. As under SOP 50 10 8, a seller note counts toward your equity only if it's on full standby, with no principal or interest payments for the whole term of the SBA loan, and it can cover at most half of the required injection. That half is shared with the other limited sources, such as other standby debt and minority investors who hold less than 20%. So a 90/5/5 structure still works only if the seller agrees to wait the full loan term for any payment on their 5%.

What did change is the seller's role after closing. The seller can now consult for the business for up to 24 months in total, including extensions, up from 12. They still can't stay on as an owner, officer or employee. Seller earn-outs remain prohibited. Buyer rebates tied to the business's performance are allowed, but any rebate has to go toward paying down the SBA loan, and a working capital true-up in the purchase agreement doesn't count as one.

A seller note can now be refinanced once it has been in place and current for 36 months. Under SOP 50 10 8 it was 24 months, and the note couldn't have been on standby. If your plan depends on refinancing the seller out early, check it against the 36-month rule.

Change-of-ownership loans still can't amortize over more than 10 years, except for special-purpose property. Real estate bought in the same deal goes either in a separate loan or into a blended, weighted-average term.

How this connects to numanknows' buy-signal scorecard

The scorecard on every numanknows listing runs the SBA math the way a lender would, against a fixed 1.25x DSCR floor: a baseline case at your resolved equity percentage with standard rate and term assumptions, plus stress cases for a 2-point rate increase, a 20% haircut to disclosed cash flow, and a revenue decline that reflects how fixed costs hit cash flow. A listing grades Strong only if the baseline and every computable stress case clear the floor.

Each scorecard also includes an SBA 7(a) eligibility pre-check built on these rules. It flags business types SBA excludes, loans that would exceed the $5 million limit, and capital that can't cover the 10% injection, and it notes when a franchise directory check or a QoE report applies. It never changes the grade.

When a listing hasn't disclosed the numbers a criterion needs, the scorecard shows insufficient data rather than silently passing. Use it as the pre-screen, not the underwriting: its inputs (your equity percentage, the assumed rate) are estimates until a real lender confirms them (see the lender pre-qualification guide), but a listing that can't clear the stress cases on disclosed numbers is one you can pass on in minutes.