How to Finance a Business Purchase: SBA Loans, Seller Financing, and Everything In Between

Buying a business is one of the most significant financial decisions you'll ever make. And unlike buying a house, where the financing path is relatively predictable, business acquisitions involve multiple funding structures that can be layered, negotiated, and customized. Understanding your options before you make an offer puts you in a far stronger negotiating position — and helps you avoid overpaying or understructuring a deal that could haunt you for years.

This guide breaks down the most common financing methods for business buyers, with real numbers, realistic expectations, and the tradeoffs you need to understand. Whether you're looking at a $150,000 service business or a $3 million manufacturing company, the core principles apply.

Start Here: How Lenders Think About Business Acquisitions

Before diving into specific loan types, you need to understand what every lender is evaluating: debt service coverage ratio (DSCR). Lenders want to see that the business generates enough cash flow to cover the loan payments with room to spare. Most conventional and SBA lenders require a minimum DSCR of 1.25, meaning the business earns $1.25 for every $1.00 of annual debt service. Some require 1.35 or higher.

This is why the purchase price and the business's Seller's Discretionary Earnings (SDE) or EBITDA are so closely linked in deal structuring. If a business generates $200,000 in SDE and you're trying to finance $1.5 million at current interest rates, the math simply won't pencil for most lenders — no matter how good the business looks on paper. A good broker will help you identify the maximum financeable purchase price before you fall in love with a number that won't work.

SBA 7(a) Loans: The Workhorse of Business Acquisition Financing

The SBA 7(a) loan program is the most widely used financing tool for buying a business in the United States, and for good reason. It offers terms that conventional bank lending simply doesn't match: loan amounts up to $5 million, repayment periods up to 10 years for business acquisitions (and up to 25 years when real estate is included), and down payments as low as 10% in many cases.

As of mid-2025, SBA 7(a) interest rates are variable, typically calculated as the Prime Rate plus 2.75% to 3.75%, depending on loan size and term. With Prime currently around 7.5%, you're looking at effective rates in the 10.25%–11.25% range for most business-only acquisitions. That's higher than it was in 2021, but these are still historically manageable rates when the deal is structured properly.

What You Need to Qualify for an SBA 7(a) Loan

• Down payment: Typically 10%–20% of the purchase price, coming from your own liquid funds (not borrowed).
• Credit score: Most SBA lenders want a personal credit score of 680+, though some preferred lenders will work with scores in the 650s with strong compensating factors.
• Industry experience: You don't need to have owned a business before, but demonstrable experience in the same or adjacent industry significantly improves approval odds.
• Business cash flow: The business must show at least 2–3 years of tax returns demonstrating sufficient SDE to cover debt service at the proposed loan amount.
• Collateral: The SBA requires lenders to take available collateral, which may include business assets and personal real estate, but a lack of collateral alone won't kill a deal if cash flow is strong.

One critical detail many buyers miss: the SBA requires that sellers who receive 10% or more of the purchase price in seller financing must subordinate that note to the SBA loan and place it on standby for the first 24 months of the loan. This affects how you structure negotiations with the seller.

SBA 504 Loans: When Real Estate Is Part of the Deal

If the business you're buying includes the real property — a building, warehouse, or commercial space — the SBA 504 program may be worth exploring alongside or instead of the 7(a). The 504 is structured as a two-part loan: a conventional lender funds roughly 50% of the project, a Certified Development Company (CDC) provides 40% backed by the SBA, and the buyer brings 10% down.

The 504 program offers fixed interest rates on the CDC portion (currently in the 6%–7% range for 20-year terms), which provides long-term cost certainty that the variable-rate 7(a) doesn't. However, 504 loans are limited to transactions where the primary purpose is acquiring fixed assets — real estate and heavy equipment. If you're buying a service business with minimal physical assets, the 7(a) is the right tool.

Seller Financing: More Common Than You Think

In a significant percentage of small business sales — industry estimates range from 60% to 80% of transactions under $1 million — the seller carries some portion of the financing. This isn't a sign the business can't get bank financing; it's often a deliberate deal structure that benefits both parties.

Seller financing typically covers 10%–30% of the purchase price, carries interest rates between 5%–8%, and is repaid over 3–7 years. For example, on a $500,000 business purchase, a seller might carry a $75,000 note at 6% over 5 years — payments of roughly $1,450 per month that come out of the business's cash flow.

Why Sellers Offer Financing

• It makes the business easier to sell by expanding the buyer pool.
• Sellers often receive a higher total purchase price when they offer financing terms.
• Interest income on the seller note is often more attractive than reinvesting the lump sum at current savings rates.
• It demonstrates the seller's confidence that the business will continue to perform post-sale — a meaningful signal to buyers.

Negotiating Seller Financing: Key Terms to Discuss

Interest rate, repayment term, balloon payment provisions, prepayment penalties, and what happens in case of default should all be negotiated and documented in a formal promissory note secured against business assets where possible. If you're combining seller financing with an SBA loan, the SBA's standby requirement (noted above) must be disclosed to your lender upfront.

Conventional Bank Loans and Credit Unions

Conventional business acquisition loans — those not backed by the SBA — are harder to qualify for, generally require 20%–30% down, carry shorter repayment terms (5–7 years is common), and are typically reserved for buyers with strong existing banking relationships or very clean, asset-heavy businesses. They can move faster than SBA loans, which typically take 45–90 days to close, but the stricter terms mean higher monthly payments.

Community banks and credit unions are often more flexible than large national banks for small business acquisitions in the $250,000–$1 million range. If you have an established relationship with a local institution, it's worth having that conversation early in your search — before you're under contract.

Rollover for Business Startups (ROBS): Using Retirement Funds

A ROBS arrangement allows you to use funds from a 401(k) or IRA to buy a business without paying early withdrawal penalties or income taxes on the distribution. The mechanics involve establishing a new C-corporation, creating a 401(k) plan within it, rolling your existing retirement funds into the new plan, and having the plan purchase stock in the corporation — which then uses those funds to acquire the business.

ROBS is legal when structured correctly, but it requires a specialized ERISA attorney or provider and ongoing compliance. Setup costs typically run $5,000–$10,000, with annual administration fees of $1,500–$2,500. The IRS scrutinizes these arrangements, so cutting corners is not an option. That said, for buyers with substantial retirement savings and limited liquid capital, ROBS can be the difference between doing a deal and sitting on the sidelines.

Equity Partners and Outside Investors

Bringing in an equity partner — a silent investor, a private equity contact, or even a family member — is an option some buyers use to bridge a gap in their down payment or increase their purchasing power. The tradeoff is real: you're giving up a percentage of ownership and future profits in exchange for capital today. If the business generates $200,000 annually and your partner owns 30%, that's $60,000 per year leaving your pocket.

This structure works best when the business is large enough that shared ownership still leaves both parties well-compensated, or when the buyer brings operational expertise that genuinely justifies a larger equity stake relative to capital contributed. Document everything with a formal operating agreement regardless of how well you know your co-investor.

Earn-Outs: Performance-Based Deferred Payments

An earn-out is a deferred component of the purchase price paid to the seller based on the business hitting specific performance targets post-sale. For example, a buyer might agree to pay $800,000 upfront with an additional $150,000 paid over two years if the business maintains revenue above $1.2 million annually.

Earn-outs are most common in deals where the buyer and seller disagree on valuation — often when the seller believes future growth justifies a higher price than current cash flow supports. They shift risk to the seller and can make deals happen that wouldn't otherwise close. However, earn-out disputes are also among the most common sources of post-closing litigation, so the metrics, measurement periods, and payment triggers must be drafted with precision.

Putting It All Together: How Deals Are Actually Structured

Most business acquisitions under $5 million use a combination of financing sources rather than a single funding method. A realistic example for a $750,000 business purchase might look like this:

• Buyer down payment: $75,000 (10%)
• SBA 7(a) loan: $600,000 (80%)
• Seller note (on standby): $75,000 (10%)

At a blended interest rate of approximately 10.5% on the SBA portion and 6% on the seller note, total annual debt service on this structure would be approximately $95,000–$100,000. For this to work, the business needs to generate at least $118,000–$125,000 in SDE annually — and ideally closer to $150,000 or more to leave the new owner with meaningful take-home income after debt service.

Working through these numbers before you make an offer — not after — is what separates buyers who close deals from buyers who waste months in due diligence on transactions that were never financeable.

Next Steps: Working with a Broker Who Understands Financing

A business broker who understands deal financing isn't just finding you a listing — they're helping you structure a transaction that actually closes. Barrett Henry and the buythe.biz network work with buyers across the country to match them with businesses that fit their financial profile, connect them with SBA-approved lenders, and structure offers that sellers accept and banks approve. If you're serious about buying a business, start the conversation before you start the search.