SBA loan to buy a business: how much of your own money the down payment really takes

What the 10% is a percentage of

SBA's rulebook asks for an equity injection of at least 10% on a change of ownership, and nearly every buyer prices that against the asking price. It is measured against total project cost: the purchase price, plus closing costs and fees, plus the working capital the business needs to keep trading from the day it is yours. Add a licence transfer, the lender's valuation fee and a payroll run or two before the first big receivable lands, and the base is larger than the listing — so the cash is larger too.

The injection also has to be money that is genuinely yours to put in. Funds borrowed against the business you are buying do not count; that rule exists precisely to stop a deal from financing its own down payment. Which other sources qualify is the lender's call against the standard operating procedure, and they will want to see the money in an account before closing rather than described in a plan. The full list of rules that shape the deal sits in the SBA 7(a) entry — this page is about the one question those rules answer badly: how much of it has to be yours.

Can you buy a small business with no money down?

Not under 7(a) as it is written, and the phrase usually describes something narrower than it promises — a structure where less of the cash is yours, not one where none of it is. The legitimate lever is the seller. A seller note on full standby — no principal or interest paid during the standby period — can count toward the required injection, but for no more than 50% of it. The other half is yours.

So the answerable version of the question is "how low can my own cash go", and the answer is half of the injection requirement rather than nothing. What is sold as no-money-down is either a different instrument entirely, or the same deal with the cash moved somewhere less visible — and your personal guarantee is still sitting behind it either way.

The seller note that counts, and the one that doesn't

Two notes with the same face value do opposite things to your file. One is silent for its standby period: it counts toward the injection and leaves debt service alone. The other pays from month one: ordinary financing that adds to the payments the business has to cover, making the ratio below harder rather than easier.

The distinction is decided in the purchase agreement, not at the bank, which is why standby terms belong in the negotiation about price. "The seller will carry part of it" is not a fact a lender can use. Whether interest accrues during standby or is forgiven, when payments start, and what the note is secured by all change the real price and the real cash — and all of them are cheaper to settle before anyone has fallen in love with the deal.

What else has to be true before any money moves

These are the rules a change-of-ownership loan is underwritten against. Two of them changed on 1 October 2026, so guidance written earlier — including a good deal of what a search will return — quotes the previous edition.

The valuation is the one that surprises people. You agree a price with the seller; a third party the lender hires says what the business is worth; the loan cannot be written above that number. When the valuation lands under the agreed price, the gap becomes your cash, a lower price, or a standby note — and it arrives late, after the letter of intent is signed and the goodwill is spent.

Global coverage is the other one. Buyers reasonably assume the business carries the loan, and it does; but the test is run across your whole balance sheet, which means paying down personal debt can do more for your file than finding another dollar of down payment. The arithmetic of the ratio itself, including the market wage a lender subtracts for whoever runs the business, is in DSCR.

Where the cash actually goes

The injection is one line of five, and the last two are the ones first-time buyers leave out of the plan entirely.

A buyer who meets the injection exactly and keeps nothing back has financed the purchase and not the ownership. The lender will not stop you: the reserve is not their requirement, which is exactly why it is the easiest line to delete and the most expensive one to be without.

Before the arithmetic means anything

Every number above is computed on earnings somebody believes. Coverage runs on normalised SDE, and the gap between the seller's version of profit and the version that survives documents is where financing quietly fails — a ratio built on add-backs nobody can evidence is not a ratio. That is work to do before the lender's file opens: the documents to request first, then the diligence checklist.

One procedural question is worth asking your lender in the first conversation, because the answer is not in your control: which edition of the rulebook will govern your file. It is the one in force when the loan receives its SBA number, not the one in force when you signed the letter of intent — and the two editions do not ask for the same coverage.

None of this is a lender's decision, and none of it is advice to buy. It is the arithmetic a lender will run, early enough that you can still change the terms it runs on.

1. Price the injection off total project cost, not the asking price

   Write down the price, the closing costs and fees, and the working capital the business needs in the first months. The injection is measured against that total, so a plan built on the listing price understates the cash before anything else goes wrong.

2. Ask the lender which edition of the rulebook will govern your file

   It is set by the date the loan gets its SBA number, not by your letter of intent. The coverage floor differs between editions, so the answer decides which ratio your deal has to clear.

3. Settle the seller note's standby terms while price is still open

   Whether the note is silent during standby, when payments begin, and whether interest accrues decide whether it counts toward your injection or just adds to debt service. All three are negotiation, and all three get harder after the purchase agreement is drafted.

4. Run coverage on documented earnings, with a wage for yourself in it

   Use the earnings the documents support, subtract what it costs to replace the owner's labour, and compare the result to the loan payments. A ratio that only clears on the seller's adjusted figure is a ratio that clears nowhere.

5. Keep a reserve outside the deal, and decide its size before closing

   Nobody in the transaction will ask you for it. Decide what you keep back while you can still structure the loan around it, rather than discovering the number in the first slow quarter of ownership.

Questions buyers ask

How much is the down payment on an SBA loan to buy a business?

At least 10% of total project cost as an equity injection — total project cost being the purchase price plus closing costs, fees and the working capital the business needs after the sale, not the asking price alone. Up to 50% of that requirement can be met with a seller note on full standby, so the cash that must be genuinely yours can fall to half of the requirement, but not to nothing.

Can you buy a small business with no money down using an SBA loan?

No. The injection cannot be borrowed against the business being purchased, and a standby seller note can cover no more than half of it. Structures advertised as no money down either sit outside 7(a) or move the same cash somewhere less visible, with your personal guarantee still behind the loan.

What are the requirements for an SBA loan to buy a business?

An equity injection of at least 10% of total project cost; debt-service coverage of at least 1.25 on a standard 7(a) change of ownership under SOP 50 10 8.1, in force since 1 October 2026; at least 1.0 on a global basis including your personal obligations; an independent business valuation above $250,000 — and change-of-ownership loan proceeds cannot exceed the valuation; and, where the business purchase price is $3,000,000 or greater, an independent quality of earnings review. Since 1 October 2026, 7(a) Small may not be used for any change of ownership, so a small purchase is underwritten as a standard 7(a).

Does a seller note count as my down payment?

Only on full standby, and only up to half of the required injection. Full standby means no principal or interest paid to the seller during the standby period. A note that pays from the first month is ordinary financing: it adds to the debt the business must service and makes the coverage test harder rather than filling your injection.

Why does my own debt matter if the business pays the loan?

Because the lender also tests coverage on a global basis — the business and your personal obligations together — at a floor of 1.0. A car loan, a mortgage and a student balance all sit in that arithmetic, which is why reducing personal debt sometimes does more for a file than adding cash to the down payment.

Sources

• SBA — SOP 50 10 8, Lender and Development Company Loan Programs (effective 1 June 2025)
• SBA — SOP 50 10 8.1, Appendix 15: 7(a) Changes of Ownership (effective 1 October 2026)
• SBA — Information Notice 5000-880695, Issuance of SOP 50 10 8.1 (issued 14 August 2026)

Read next

• Due diligence checklist for buying a small business
• What documents to ask a seller for — and what each one has to prove
• What a Quality of Earnings report looks like — and what it costs
• SBA 7(a) loan (business acquisition)
• Debt Service Coverage Ratio (DSCR)
• Seller note (seller financing)
• pricing.html

Have the documents already? A DealLoupe pre-screen reads what the seller gave you and reports the red flags, the evidence gaps and the questions to ask — before you spend anything on due diligence. See what it costs →

Last updated: 2026-10-19. Educational information, not financial or legal advice — and not a substitute for a CPA, an attorney or a formal Quality-of-Earnings review.