How to Finance Buying Out a Sibling's Share of an Inherited Business

The Core Problem With Inherited Business Co-Ownership

When two or more siblings inherit a business, the arrangement rarely stays stable for long. One sibling wants to run the business; another wants their money. One wants to expand; another wants to sell. One is working 60-hour weeks; another is collecting distributions without contributing.

The financing question usually arrives after the relationship has already become strained. That's the wrong sequence. The mechanics of a buyout are easier to negotiate when both parties are still on good terms.

The fastest path to agreement is almost always a structured buyout rather than a third-party sale. A sale to an outsider triggers capital gains taxes, broker fees (typically 8-12% of sale price for smaller businesses), and disruption to employees and customers. A sibling buyout keeps the business intact and can be structured to minimize tax impact while giving the exiting sibling a fair exit at a reasonable pace.

Three structures dominate sibling buyout financing: an SBA 7(a) loan, a sibling-held promissory note, and an earn-out structure. Most complex situations end up with a combination of two or three. The right choice depends on the business's cash flow, the exiting sibling's liquidity needs, and whether the estate has cleared probate.

Option 1: SBA 7(a) Loan

SBA 7(a) financing is available for sibling buyouts when the acquiring sibling is purchasing the business outright (not just the exiting sibling's share, in most lender interpretations) and will operate the business full-time.

Eligibility considerations specific to inherited business buyouts:

The main limitation is debt service. The business must generate enough cash flow to cover SBA loan payments plus operating costs and owner compensation. For a $500,000 buyout at 10-year SBA terms, monthly payments run approximately $5,600 (at Prime + 2.25%, variable). Verify current Prime rate at federalreserve.gov.

SBA financing makes the most sense when the business has strong documented earnings and the acquiring sibling has relevant experience. If the business is profitable but cash flow is marginal for debt service, a sibling-held note structure often works better.

For a full comparison of SBA and conventional acquisition financing, see SBA 7(a) vs. Conventional Financing for Intra-Family Business Sales.

Option 2: Sibling-Held Promissory Note

In a sibling-held note structure, the exiting sibling accepts monthly payments over time rather than a lump sum at closing. This is the most flexible and frequently used structure for family business buyouts, for a simple reason: there's no bank underwriting.

A typical sibling note structure: - Principal: Agreed fair market value of the exiting sibling's share - Interest rate: IRS Applicable Federal Rate (AFR) minimum (below-AFR rates trigger gift tax); current AFR rates published monthly at irs.gov - Term: 5-15 years depending on business cash flow - Collateral: Business assets, personal guarantee from the acquiring sibling - Default provisions: Clearly specified in the note agreement

The primary risk for the exiting sibling is unsecured credit exposure to their own sibling. If the business fails, payments stop. Mitigation options include life insurance on the acquiring sibling (covers the note if they die), a first lien on business assets, and a personal guarantee.

For the acquiring sibling, the benefit is no bank qualification and no equity injection requirement. The structure is entirely between the parties. The business pays for the buyout over time, which preserves cash and avoids debt-service stress in early years.

Using an attorney to draft the promissory note is not optional. A handshake deal between siblings is not legally enforceable at the detail level required. Disputes over payment timing, default remedies, and collateral are common without a properly drafted note agreement.

Option 3: Earn-Out Structure

An earn-out ties the exiting sibling's payments directly to business performance. Instead of fixed monthly payments, the exiting sibling receives a percentage of revenue or profit over a defined period.

Earn-out structures make sense when: - The business has irregular or uncertain cash flow - The exiting sibling doesn't want to risk default on a fixed note - The parties disagree on current business value but agree on how to measure future performance

A simple earn-out formula: exiting sibling receives 15% of net profit annually for 8 years, capped at the agreed buyout price. If the business earns $200,000 in net profit in year one, the exiting sibling receives $30,000.

The main challenge with earn-outs is defining "net profit" in a way both parties accept. The acquiring sibling controls the P&L and could theoretically run up expenses to reduce reported profit. A well-drafted earn-out agreement defines exactly which expenses are included, which are excluded, requires annual CPA-reviewed financials, and includes anti-manipulation provisions.

Earn-outs are also common as a hybrid component: a partial lump sum at closing (funded by an SBA loan or savings), with the balance paid via earn-out. This reduces the exiting sibling's credit risk while giving the acquiring sibling manageable initial debt service.

Valuation: The Foundation of Any Buyout

Every buyout structure starts with an agreed business value. For siblings, this is frequently the hardest negotiation. Both parties have an interest in the number moving in opposite directions.

The most defensible approach is a third-party business appraisal by a Certified Business Appraiser (CBA) or Certified Valuation Analyst (CVA). Cost typically runs $3,000-$8,000. Both parties agree to accept the appraised value before the appraisal is commissioned; this prevents post-appraisal disputes.

Common valuation methods for small businesses:

For most inherited small businesses (retail, service, restaurant, trades), the SDE multiple is the standard. SDE = net income + owner compensation + add-backs. A business with $150,000 SDE selling at 3x is worth $450,000. The exiting sibling's 50% share would be $225,000.

Valuation multiples quoted by the exiting sibling's attorney are almost always higher than those from a neutral appraiser. The $3,000-$8,000 cost of an independent appraisal is cheap compared to months of legal fees disputing a number neither party chose.

A Representative Sibling Buyout

Two siblings inherited a $900,000 restaurant equipment supply business in Ohio. One sibling had managed the business for six years; the other lived out of state and wanted to exit. Probate closed 11 months after the parents' death.

They engaged a CVA who appraised the business at $840,000. The operating sibling purchased the 50% stake ($420,000) using a sibling-held promissory note at 4.5% interest (mid-term AFR at time of closing), with a 10-year term and a first lien on business assets as collateral. Monthly payments: $4,340/month, beginning 60 days after closing.

No bank was involved. An attorney drafted the note and the security agreement for $2,200. The exiting sibling received a personal guarantee from the operating sibling.

The notable issue: the exiting sibling initially insisted on a 3-year payoff, which would have required $12,700/month. The business had $180,000 in annual SDE ($15,000/month). A 3-year note would have left no cash for owner compensation. Extending to 10 years made the deal viable without putting the business at risk.

How We Researched This

This guide draws on SBA Standard Operating Procedures (SOP 50 10 7.1) governing related-party acquisitions, IRS guidance on the Applicable Federal Rate (published monthly at irs.gov/applicable-federal-rates), and standard business valuation methodology as defined by the American Society of Appraisers and the National Association of Certified Valuators and Analysts (NACVA). Business broker fee ranges reference published data from the International Business Brokers Association (IBBA). Earn-out structure guidance reflects standard practice in small business acquisition transactions documented in publicly available M&A resources.

*Figures referenced are as of early 2026. Verify current rates and program requirements at sba.gov and irs.gov.*

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