How to Use an SBA Loan to Buy an Existing Business

You’ve found a business you want to buy. You’ve heard SBA loans can finance acquisitions, and you’re trying to figure out whether the numbers work and what the lender is going to need from you and from the deal itself.

Here’s what most buyers don’t realize: the lender isn’t just evaluating you. They’re evaluating the business too. Your personal credit, cash flow, and experience all matter. But so does the business’s revenue history, lease, valuation, and deal structure. That’s the part most buyers don’t find out about until they’re already deep in the process.

At Small Business Funding, we work with buyers using SBA financing to acquire existing businesses regularly. The deals that run smoothly are the ones where the buyer understood both sides of the underwriting before they signed anything.

Why SBA Financing Works Well for Business Acquisitions

If you’re asking whether you can buy a business with only 10% down, the answer for an established business with a revenue history is usually yes. That’s SBA financing’s most important advantage for acquisitions.

Conventional acquisition loans often require 20% to 30% in equity. They sometimes won’t finance goodwill, the intangible value of a business’s customer relationships, brand, and reputation. And they may come with balloon payments or shorter terms that increase your monthly debt service. SBA 7(a) is different. It can finance goodwill. It amortizes over 10 years with no balloon. And it covers the full acquisition in a single loan, including working capital and closing costs.

One other thing to know: if you’re buying a business, the SBA 504 program isn’t the right tool. The 504 is designed for fixed assets, commercial real estate and major equipment. Business acquisitions run through the SBA 7(a) program.

TIP: We help buyers confirm which SBA program fits their deal and that the acquisition structure qualifies before any lender conversations start.

What the Lender Actually Evaluates: You and the Business

This is the part most buyers miss. The lender doesn’t just look at you.

You’ll go through the standard SBA credit review: personal credit score, personal financial statements, business experience, cash flow from any businesses you currently own, and your personal financial strength to support the guarantee. You need to pass that review. But it’s only half of what the lender is analyzing.

The other half is the business you’re acquiring. Lenders want to see two to three years of business tax returns, a consistent or growing revenue trend, manageable customer concentration, and cash flow that can support the new debt service after the acquisition closes. Both sides have to qualify. Passing one doesn’t carry the other.

TIP: We analyze both sides of the deal before you go to a lender, so you know where you stand on each and whether there are issues to address before submitting.

Reading the Seller’s Financials: Add-Backs and Adjusted Cash Flow

Here’s what most buyers don’t realize until they’re sitting with a lender: small business tax returns often understate the real cash flow. Sellers run personal expenses through the business. They take owner compensation that’s higher than what they’d pay a replacement manager. They depreciate equipment. They pay for one-time legal or consulting fees that won’t recur.

Each of those is a potential add-back. When a lender adjusts for them, the normalized cash flow is often meaningfully higher than the bottom line on the return. That adjusted number is what lenders use to calculate the debt service coverage ratio on the new loan.

Before you negotiate a purchase price, have someone run the adjusted cash flow on the seller’s last three years of returns. That number tells you how much debt the business can actually service, which tells you how large an SBA loan the deal can support.

TIP: We review the seller’s financials and walk you through how lenders will calculate adjusted cash flow, so there are no surprises when the underwriter runs the numbers.

Business Valuation: How the Appraisal Shapes the Loan

The loan isn’t sized against the price you agreed to pay. It’s sized against what an independent appraiser says the business is worth.

If you and the seller agree on $800,000 and the appraisal comes in at $650,000, the lender will size the loan against $650,000. That leaves a $150,000 gap. You either renegotiate the purchase price, cover the gap with additional cash, or the deal doesn’t close.

Most buyers don’t think about this until the appraisal happens. The time to think about it is before the purchase agreement is signed. Appraisers look at industry earnings multiples, revenue consistency, asset base, customer concentration, and lease terms. A business with concentrated revenue or a short lease will appraise lower than one without those issues.

TIP: We help you assess whether a purchase price is in a realistic range before you commit to it, so you’re not renegotiating after the appraisal comes in lower than expected.

The Equity Injection and How Seller Financing Fits In

The standard equity injection for an established business acquisition is 10% of total project costs. That includes the purchase price, closing costs, and any working capital built into the deal.

Here’s a tool most buyers don’t know about: the seller standby note. If the seller agrees to carry a portion of the purchase price with no payments due for the first 24 months, that amount can count toward your equity injection under SBA rules. A buyer with 5% in cash and a seller willing to carry 5% on full standby can meet the full 10% threshold. For buyers who are short on liquid capital, this changes what deals are actually feasible.

The seller standby has to be structured correctly. It must be disclosed to the lender from the start, included in the purchase agreement, and clearly designated as a standby note with no payments during the deferral period. If it isn’t structured right, it won’t count.

TIP: We help structure seller standby notes correctly so they qualify toward the injection and make sure the lender sees the deal structure clearly from the beginning.

Asset Sale vs. Stock Sale: Why the Deal Structure Matters

SBA lenders strongly prefer asset sales. In an asset sale, you acquire the business’s specific assets: equipment, inventory, trade names, customer relationships, and goodwill. You don’t inherit the seller’s liabilities, pending lawsuits, or historical obligations. You start clean.

In a stock sale, you acquire the legal entity itself. That means everything inside it, including whatever liabilities aren’t visible on the surface. Most SBA lenders won’t do stock sales. The ones that do add scrutiny and conditions that make the process harder.

Sellers sometimes push for stock sales for tax reasons. If you’re on the receiving end of that conversation, understand what it means: you may significantly limit your lender options. If the deal can only work as a stock sale, find that out early. You’ll need a lender with specific experience and appetite for it.

TIP: We know which lenders are willing to finance stock sale acquisitions and what conditions they require, so if that’s the structure you’re working with, we route it correctly.

Lease and Key-Person: The Deal Factors Most Buyers Check Too Late

Most buyers find out about these at the worst possible moment: after they’ve signed a purchase agreement and told the seller they’re serious.

The commercial lease for the business location must be assignable to you as the new owner. If the landlord won’t assign the lease, or if the lease has fewer than 10 years of remaining term including renewal options, you have a lender problem. Lenders need to know the business has a stable, continued location. A short or non-assignable lease raises real questions about whether the business can keep operating after you take over.

Key-person risk is the other one. If the business runs on the seller’s personal relationships, if clients follow the seller personally, if the seller holds professional licenses that can’t be transferred, or if 40% of revenue comes from one customer who knows the seller, lenders see that as repayment risk. That doesn’t mean the deal can’t happen. But it means you need a credible plan for how you retain that revenue after the seller is gone. Sometimes that requires a meaningful consultation or employment period for the seller built into the deal.

TIP: We flag lease and key-person issues early in the process so you understand what you’re walking into before you’ve committed to the deal.

How to Position Yourself Before You Sign a Purchase Agreement

The most important timing principle in SBA acquisition financing: do your deal structure checks before you sign a purchase agreement or letter of intent. After you sign, you’re negotiating from a position of commitment. The seller knows you’re in.

Before you reach that point, here’s what to verify: get the seller’s last three years of tax returns and have adjusted cash flow calculated; review the lease and confirm it’s assignable with sufficient remaining term; assess whether the purchase price is likely to be in range for a supportable appraisal; confirm the business can be structured as an asset sale; and evaluate key-person and customer concentration risk honestly.

The lender you work with also matters for acquisitions. SBA acquisition financing is a specific subset of the SBA lender market. Not every SBA lender does it comfortably. Working with a broker who knows which lenders are actively doing acquisition deals, and what their specific requirements are, routes your deal correctly the first time.

TIP: We work with SBA acquisition lenders regularly and know which ones have the appetite and deal experience for the size and structure you’re working with.

Bottom Line

Buying a business with SBA financing is one of the most efficient paths to ownership available. Ten percent down, goodwill financeable, a single loan covering the full acquisition. The structure is genuinely favorable for buyers who are prepared.

But the process has moving parts that most buyers don’t know about until they’re in it. The business you’re acquiring is underwritten alongside you. The valuation caps the loan. The lease can kill the deal. The seller standby can make it possible.

Understanding both sides of the underwriting before you commit to a deal is what separates a smooth acquisition from a costly renegotiation. Small Business Funding works with buyers at every stage of this process, from confirming deal feasibility before you sign to closing with the right lender. If you’re looking at a business and want to know whether the financing can work, that’s exactly where we start.