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The capital stack behind a business acquisition

Learn how business acquisition financing combines buyer equity, SBA or conventional debt, seller notes and working capital in a practical capital stack.

ScaleKit Financing7 min read

The capital stack behind a business acquisition

Quick answer

Business acquisition financing often combines buyer equity with senior debt and, where appropriate, a seller note or other subordinate capital. The stack must fund the full transaction—including fees and post-close working capital—while leaving enough normalized cash flow to service debt and operate the company.

Key takeaways

  • Build a complete sources-and-uses table before signing the LOI.
  • Size debt from normalized cash flow, not purchase price alone.
  • Preserve post-close working capital and a contingency reserve.
  • Align seller-note terms, liens and standby requirements with the senior lender.

Purchase price is not the full funding need

An acquisition budget includes more than the headline price. Legal and accounting fees, diligence, lender costs, working capital, inventory adjustments, lease deposits and transition expenses can materially increase cash required at closing.

Build a sources-and-uses schedule before the letter of intent becomes binding. If the model only funds the seller’s proceeds, the buyer may close with too little liquidity to make payroll, replenish inventory or absorb a slow first quarter.

UsesIllustrative amountWhy it matters
Purchase price$2,000,000Payment for acquired business
Fees and closing costs$100,000Legal, diligence and financing
Working capital reserve$200,000Post-close operating cushion
Total uses$2,300,000Amount all sources must cover

Understand each layer of the acquisition stack

Senior debt usually has first claim on collateral and cash flow. Buyer equity absorbs first loss and demonstrates commitment. A seller note can bridge valuation or reduce cash needed at closing, but its payment, lien position and standby terms must work with the senior lender.

Other layers can include conventional bank debt, SBA 7(a) financing, equipment financing, investor equity or rollover equity from the seller. More layers do not automatically improve a deal; each introduces negotiation, control rights and closing dependencies.

SourceRoleMain negotiation
Buyer equityFirst-loss capitalAmount, source and liquidity remaining
Senior / SBA debtPrimary leverageCash-flow support, collateral and term
Seller noteBridges price or alignmentStandby, subordination and payment
Rollover / investor equityReduces debt needOwnership, governance and exit rights

Where SBA 7(a) can fit

Official SBA guidance lists changes of ownership among eligible 7(a) uses. The program can be attractive for qualified acquisitions because it may support a broad transaction purpose, but borrower, business, structure and proceeds must satisfy SBA and lender requirements.

The lender evaluates buyer experience, seller financials, purchase agreement terms, valuation and projected debt service. SBA participation does not make an overvalued or undercapitalized deal bankable. It changes the lender’s risk structure, not the economics of the business.

Program reality — The SBA is not buying the business for you.

A participating lender makes the credit decision and funds the loan. The buyer still needs eligible equity, credible management and cash flow that supports repayment.

Size debt from normalized cash flow

Historical earnings require adjustment before they support debt. Normalize owner compensation, one-time expenses, related-party rent and nonrecurring revenue carefully. Add-backs should be documented and economically defensible, not used to manufacture coverage.

Model debt service after replacing the seller’s role, funding maintenance capital expenditures and paying market compensation. Then stress the model for customer loss, margin compression and a slower transition. Beyond ratios, focus on absolute cash remaining after all obligations.

  • Reconcile tax returns to profit-and-loss statements.
  • Identify customer, supplier and employee concentration.
  • Separate recurring add-backs from optimistic adjustments.
  • Include buyer salary and required management hires.
  • Model senior debt, seller payments and existing obligations together.

Protect financing flexibility in the LOI

A letter of intent should not lock the buyer into a closing date or capital structure that has not been tested. Financing and diligence contingencies, record access, exclusivity, working-capital targets and seller-note expectations should be addressed with legal counsel.

Avoid promising a specific lender structure before eligibility is confirmed. Changes in price allocation, ownership, lease terms or seller involvement can affect underwriting. Give the financing team the draft LOI early enough to flag structural issues.

  • Financing contingency and realistic closing window.
  • Working-capital peg and inventory treatment.
  • Seller financing, standby or subordination expectations.
  • Transition support and noncompete terms.
  • Access to complete financial, legal and operational records.

Build an acquisition-ready lender package

A strong package tells one coherent story: who the buyer is, what is being acquired, how price was determined, how the transaction is funded and why cash flow supports repayment. Inconsistent spreadsheets and unexplained add-backs create avoidable uncertainty.

Prepare buyer resumes and personal financial information alongside seller tax returns, interim financials, debt schedules, customer concentration, lease documents and a detailed purchase agreement. Include projections bridging historical operations to post-close management.

  • Signed or near-final LOI and sources-and-uses schedule.
  • Three years of seller financials and current results.
  • Quality-of-earnings diligence where appropriate.
  • Buyer resume, ownership and liquidity evidence.
  • Post-close operating plan and monthly forecast.
  • Seller note, rollover equity and transition explanation.

Illustrative acquisition capital stack

Assume total uses of $2.3 million: a $2 million purchase price, $100,000 of costs and $200,000 of working capital. An illustrative stack might include $1.75 million of senior debt, $350,000 of buyer equity and a $200,000 seller note. These figures are not a recommendation; they show how every use must match a documented source.

The real decision is whether normalized post-close cash flow can service all obligations while funding operations. If the model works only by eliminating reserves or counting uncertain add-backs, change the price, structure or target.

Illustrative only — $2.30M uses = $1.75M debt + $350K equity + $200K seller note

Actual equity, guarantees, seller-note treatment and eligibility depend on the transaction, lender and program requirements.

What business owners ask next.

Can an SBA loan buy a business?

SBA 7(a) guidance includes complete or partial changes of ownership among eligible uses, subject to program rules and lender underwriting.

How much down payment is needed?

There is no universal percentage for every transaction. Buyer equity depends on program, lender, borrower, cash flow, collateral and deal structure.

Can a seller note count toward the stack?

It can be part of the structure, but the senior lender may require subordination, standby or specific payment terms. Do not assume it will be treated like buyer cash.

What is debt-service coverage?

It compares cash available for debt service with required payments. Lenders define it differently, so review both the lender method and actual cash remaining.

Why include working capital?

The acquired business needs post-close cash for payroll, suppliers, inventory and volatility. Funding only the purchase price can leave it undercapitalized.

Built from primary guidance and operating logic.

This guide is educational and does not constitute legal, tax, accounting or lending advice. Program rules and provider terms can change. Scalekit Funding is not a lender; third-party providers determine approvals and terms.

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