Acquisition Finance In Plain-English for Business Owners
Buying another business is one of the most reliable ways to grow. Yet, for many business owners, the vocabulary related to acquisition finance can feel like learning a foreign language. This guide breaks down the most common loan structures and funding tools used in mergers and acquisitions so you can walk into the process with confidence.
GWP Waterman is a business lending brokerage and equity partner introduction service based in Miami, Florida. We do not lend directly; we connect businesses with the right funding sources. This article is for informational purposes only and does not constitute financial or legal advice.
How Acquisition Finance Typically Works
Most business acquisitions aren’t funded with a single check. They’re financed through a combination of sources layered into what’s called a “capital stack” — building blocks where each layer has a different level of risk, cost, and claim on the business.
Senior debt sits at the top. This is the primary loan, usually from a bank or SBA-backed lender, and it gets repaid first. Because it carries the least risk for the lender, it comes with the lowest interest rate, typically tied to the prime rate plus a spread based on creditworthiness.
Subordinated debt ranks behind senior debt in repayment priority. If the business runs into trouble, the senior lender gets paid first. That added risk means higher interest rates — often several percentage points above senior debt. Borrowers use it to bridge the gap between what a senior lender will provide and the total purchase price.
Mezzanine finance blends features of debt and equity. A mezzanine lender provides capital that functions as a loan, but the agreement often includes equity warrants (sometimes called “equity kickers”). These afford the lender the right to convert a portion of the debt into an ownership stake under certain conditions. This gives the lender upside if the company performs well. Mezzanine financing (often abbreviated to “mezz” in deal-speak) is common in deals between roughly $2 million and $50 million.
Seller financing rounds out many deals. The seller agrees to receive part of the purchase price over time rather than all at closing, which reduces upfront capital requirements and can help the buyer secure other financing.
“Most business acquisitions aren’t funded with a single check.”
The Role of SBA 7(a) Loans in Small Business M&A
For small and mid-sized acquisitions in the US, the SBA 7(a) loan program is often the most attractive option. It provides a government-backed guarantee to lenders, reducing their risk and giving borrowers access to terms they might not get through conventional financing.
The program caps loans at $5 million with repayment terms up to ten years for business acquisitions, or 25 years when commercial real estate is included. Interest rates are negotiated but capped by SBA guidelines, generally running 7–10%. The program also permits seller financing to meet equity injection requirements under certain conditions, adding flexibility for both buyers and sellers.
Notably, when an existing business acquires a company with the same six-digit NAICS industry code in the same geographic area, the SBA treats it as a business expansion and may waive the standard 10% equity injection requirement.
When SBA 7(a) Loans Aren’t Available
Despite its advantages, there are several situations where the 7(a) program isn’t an option.
Deals exceeding $5 million. The program’s loan cap means larger acquisitions must be financed through conventional commercial loans, mezzanine structures, private equity, or a combination.
Non-U.S. citizen ownership. Recent policy changes have dramatically tightened citizenship requirements. As of early 2025, eligibility was restricted to businesses with 100% beneficial ownership by U.S. citizens, nationals, or lawful permanent residents. Beginning March 1, 2026, even green card holders are excluded, with the program requiring 100% ownership by U.S. citizens or nationals only. Any non-qualifying ownership stake, no matter how small, can disqualify an otherwise eligible business.
Affiliation and size standard issues. When a business owner already controls companies in the same three-digit NAICS subsector, the SBA may count those businesses as affiliates. If the combined revenue or headcount exceeds SBA size standards, the acquiring company may no longer qualify as a “small business” and loses access to the program.
Where GWP Waterman Fits In
At GWP Waterman, we shop the market to find the best SBA lenders for our clients.
When SBA-backed financing isn’t available — whether due to deal size, ownership structure, or credit profile — we turn to alternative capital sources. In those cases, we connect business owners and project managers with reputable non-SBA lenders and/or equity investors.
Whether you’re acquiring a competitor, merging with a complementary business, or financing a management buyout, the right capital structure makes all the difference. Contact GWP Waterman via our contact form or call (305) 613-1498 to discuss your acquisition financing needs.
