How to Finance the Purchase of an Existing Business: The Real-World Guide

Acquiring an established business is one of the most compelling ways to enter business ownership. You get immediate cash flow, an existing customer base, trained employees, and operational systems that took years to build. The alternative — starting from scratch — means zero revenue, zero customers, and zero proof of concept on day one.

But financing an acquisition is a distinct skill set from running one. The deals that fall apart usually don't collapse because the business isn't good enough. They collapse because the financing wasn't structured correctly from the start.

Understanding What You're Actually Buying

Lenders underwrite business acquisitions differently than they underwrite startups. The focus is almost entirely on the target business's historical cash flow and your ability to service the debt after taking ownership. A business that generated $200,000 in seller's discretionary earnings on $1.2M in revenue is a financeable deal. A business where 60% of revenue comes from two customers is a concentration risk that needs to be addressed before a lender will touch it.

Due diligence isn't just about confirming the numbers — it's about understanding which numbers will change post-acquisition and why. If the business's value depends entirely on the seller's personal relationships, you have a transition problem that no loan structure can fix.

The Financing Toolkit

SBA 7(a) is the primary financing vehicle for business acquisitions. It allows buyers to finance up to 90% of the purchase price, requires a minimum 10% down payment, and provides terms up to 10 years on business acquisitions. The program exists precisely because conventional banks won't touch goodwill-heavy acquisitions — there's no hard collateral for them to fall back on.

Seller financing is the second tool in the kit. When a seller carries a portion of the purchase price — typically 10 to 30% on a subordinated note — it reduces the required SBA loan amount, demonstrates seller confidence in the business, and often enables deals that wouldn't otherwise qualify. Most SBA lenders view seller notes favorably because they keep the seller financially invested in a successful transition.

How Deals Get Structured

A standard SBA acquisition: buyer puts down 10%, SBA 7(a) covers 90%. The seller receives full purchase price at closing.

A modified structure: buyer puts down 5%, seller carries 10% on a standby note, SBA covers 85%. The buyer's cash requirement drops by half. The seller's note typically has a two-year standby period where no payments are made.

On larger deals, SBA loans max out at $5M. Deals above that threshold require either conventional financing, mezzanine debt, or equity partners — structures that come with different terms and different risk profiles.

What Kills Acquisition Deals

Unrealistic projections are the most common deal-killer. Lenders run their own cash flow analysis. If your projections assume 20% revenue growth in year one for a business that's grown 3% annually for five years, the underwriter will use the 3% number — not yours.

Insufficient working capital is second. The SBA loan covers the acquisition price. You still need operating cash to handle the transition period, fund inventory, cover payroll, and absorb any dips in revenue while customers adjust to new ownership.

Poor seller cooperation during due diligence is third. If a seller is slow with financials, vague about customer relationships, or resistant to a transition period, those are signals the business has problems that aren't in the books.