How Search Fund Entrepreneurs Run Due Diligence on Acquisitions

Due Diligence Fundamentals
9 min read

Search fund entrepreneurs typically run due diligence over a 60–90 day post-LOI window, working across four parallel workstreams — financial, legal, operational, and commercial — with a lean team of advisors and specialists. Unlike corporate M&A, searchers usually self-direct the process, negotiate directly with sellers, and face hard constraints from SBA lender timelines. Getting the structure right before you open the data room is what separates deals that close from deals that blow up at the finish line.

What Makes Search Fund Diligence Different from Traditional M&A?

Corporate acquirers run diligence with dedicated integration teams, in-house legal, and months of runway. Search fund entrepreneurs have none of that. The Stanford GSB Search Fund Primer — the canonical reference document for the ETA community — describes searchers as typically solo or paired operators who must simultaneously evaluate a business, manage seller relationships, satisfy investors, and coordinate an acquisition team for the first time.

Three structural differences define how search fund diligence actually works in practice:

  • Lean team: Most searchers run diligence with a CPA, an M&A attorney, and sometimes a Quality of Earnings (QoE) provider. There is no corporate development department. The searcher is the project manager.
  • SBA financing constraints: The majority of search fund acquisitions are SBA 7(a) financed. SBA lenders impose their own appraisal, environmental, and documentation requirements that layer on top of standard diligence, and they have non-negotiable processing timelines.
  • Seller dynamics: In sub-$10M deals, the seller is often the founder, the key employee, and the institutional memory of the company. Diligence must be thorough without destroying the relationship — because that same person will often train the incoming operator for 12–24 months post-close.

The Stanford Selected Search Fund Study (updated annually) consistently shows that the most common deal-killers are discovered during diligence: customer concentration, undisclosed owner adjustments, and key-person dependencies. These are not exotic risks — they are predictable, and a structured diligence process surfaces them early.

What Does the Post-LOI Timeline Actually Look Like?

The Letter of Intent is the starting gun. Most LOIs include a 60–90 day exclusivity period, and that clock runs whether you are ready or not. Smart searchers begin building their diligence infrastructure — document request list, data room, advisor roster — before the LOI is signed, not after.

Typical Search Fund Diligence Timeline

  • Phase: Kickoff & Document Request | Timing (Post-LOI): Days 1–7 | Key Deliverables: Initial document request list sent, data room access established, advisor team confirmed
  • Phase: Financial Diligence | Timing (Post-LOI): Days 7–35 | Key Deliverables: 3–5 years of P&L, tax returns, QoE report, owner add-back validation, working capital peg
  • Phase: Legal Diligence | Timing (Post-LOI): Days 14–50 | Key Deliverables: Entity review, contracts, IP assignments, litigation history, employment agreements
  • Phase: Operational Diligence | Timing (Post-LOI): Days 21–50 | Key Deliverables: Customer interviews, vendor calls, employee assessment, system and process review
  • Phase: Commercial Diligence | Timing (Post-LOI): Days 21–45 | Key Deliverables: Market sizing, competitive landscape, customer concentration, churn analysis
  • Phase: SBA / Lender Process | Timing (Post-LOI): Days 1–75 | Key Deliverables: Appraisal, environmental phase I (if applicable), lender package submission
  • Phase: Final Negotiations & Close | Timing (Post-LOI): Days 60–90 | Key Deliverables: Purchase agreement, reps & warranties, escrow, final conditions to closing

The SBA lender process runs in parallel and is often the longest pole in the tent. Searchers who treat lender coordination as a separate track — rather than integrating it into the overall diligence calendar — routinely miss their closing targets.

What Documents Does a Searcher Request?

The initial document request sets the tone for the entire diligence process. A comprehensive request, sent on day one, signals professionalism and protects the searcher from a seller claiming a document was never requested if a problem surfaces post-close.

Core document categories for a typical SDE-positive SMB acquisition:

  • Financial records: 3–5 years of P&L statements, balance sheets, cash flow statements, and tax returns (federal and state). Monthly financials for the trailing 24 months are essential for seasonality analysis.
  • Revenue detail: Customer-level revenue by year, contract terms, renewal history, and any pricing agreements or volume discounts.
  • Owner compensation and add-backs: A complete schedule of all owner compensation, personal expenses run through the business, and one-time charges claimed as normalizing adjustments.
  • Legal entity documents: Articles of incorporation, operating agreement, cap table, and any shareholder or buyout agreements.
  • Contracts: All material customer contracts, vendor agreements, leases, and any non-compete or non-solicitation agreements currently in effect.
  • Employee records: Organizational chart, compensation summary, key employee agreements, and any outstanding HR issues or claims.
  • Permits and licenses: All operating licenses, regulatory approvals, and any environmental reports if real property is involved.
  • Intellectual property: Trademark registrations, software ownership, domain names, and any third-party IP licenses the business depends on.

The HBR Guide to Buying a Small Business (Ruback & Yudkoff) recommends requesting documents in tiers — a broad initial request followed by targeted follow-ups — rather than front-loading every possible item. This keeps sellers from feeling overwhelmed early in the process while ensuring critical documents are not overlooked.

How Do the Four Core Diligence Workstreams Work in Practice?

Financial Diligence

Financial diligence in search fund deals almost always centers on Seller's Discretionary Earnings (SDE) — the earnings available to a full-time owner-operator after adding back owner compensation, personal expenses, depreciation, and one-time items. The searcher's job is to validate that the SDE multiple they are paying corresponds to earnings that are real, recurring, and transferable.

For deals above $2M SDE or where complexity warrants it, searchers commission a Quality of Earnings (QoE) report from an independent accounting firm. QoE reports provide third-party validation of revenue recognition, add-back legitimacy, and working capital normalization — and are often required by SBA lenders.

Legal Diligence

Legal diligence is almost always outsourced to an M&A attorney who specializes in small business transactions. Key focus areas: clean title to assets (or equity), no undisclosed liens, enforceability of key contracts post-acquisition, and confirmation that IP is actually owned by the entity being purchased (not the founder personally). Employment practices liability is a frequent discovery in businesses that have grown quickly and informally.

Operational Diligence

Operational diligence answers the question the financial statements cannot: can this business run without the seller? Searchers spend time on-site, shadow key employees, review SOPs, and assess software systems. The IBBA (International Business Brokers Association) consistently identifies undocumented owner dependency as one of the top reasons small business acquisitions underperform post-close.

Commercial Diligence

Commercial diligence validates the market. Is the industry growing or shrinking? Are customers loyal by switching cost or just inertia? Customer interviews — typically 5–10 calls with permission from the seller — are the single most revealing input in this workstream. A business with 90%+ gross retention and customers who struggle to name a competitor is a very different asset than one whose customers are actively evaluating alternatives.

What Are the Most Common Mistakes First-Time Searchers Make in Diligence?

First-time searchers tend to make the same set of avoidable mistakes:

  • Starting too late: Waiting until after the LOI is signed to assemble the advisor team and draft the document request list. Every day of exclusivity is irreplaceable.
  • Accepting seller-prepared summaries as a substitute for source documents: Sellers (and their brokers) present financials in the most favorable light. Always trace numbers to tax returns and bank statements.
  • Underweighting customer concentration risk: A business where 30% of revenue comes from one customer is not a $3M SDE business — it is a $2M SDE business with a binary risk attached. Model it that way.
  • Skipping operational diligence: Financial diligence tells you what the business earned. Operational diligence tells you whether it can earn that without the seller. Both are required.
  • Letting the SBA timeline surprise them: SBA appraisals, environmental reports, and lender underwriting have fixed processing times. Searchers who start the lender process late routinely need LOI extensions — which sellers may or may not grant.
  • Not tracking red flags systematically: Issues discovered in diligence rarely kill deals on their own. The pattern matters. Three minor red flags in the same category (say, revenue recognition) is a different signal than three issues in three unrelated areas.

How Do You Prioritize When Diligence Time Is Limited?

No diligence process is ever fully complete. The question is always: given the time remaining, where does incremental effort have the highest expected value?

A practical prioritization framework for searchers under time pressure:

  • Anchor on deal-killers first: Customer concentration above 25%, undisclosed litigation, and regulatory compliance issues are binary. Identify these before spending time on optimization-level questions.
  • Follow the cash: Trace all revenue to bank statements and invoices. Revenue that cannot be traced to a bank deposit is not revenue.
  • Validate the working capital peg early: Working capital disputes at closing are common and expensive. Establish the normalized working capital target in week two, not week eight.
  • Interview customers before finalizing valuation: Customer interviews frequently surface information that changes the SDE multiple you are willing to pay. Do them early enough to matter.
  • Delegate legal and QoE in parallel: The searcher cannot be in both a customer interview and a legal document review at the same time. Parallel workstreams require clear advisor delegation.

DEALPRINT's red-flag detection engine is built around this prioritization logic — it surfaces severity-scored issues across 11 categories (including financial, legal, operational, and commercial signals) and generates Next Actions so searchers know exactly where to focus their remaining diligence time. For searchers running a process solo or with a lean team, having a system that organizes findings and flags patterns across the data room materially reduces the risk of missing something material.

What Should Be in Your Diligence Tracker?

Every searcher needs a single source of truth for diligence status. At minimum, a diligence tracker should capture: every document requested and whether it has been received, every finding and its severity, every open question and who owns it, and the current status of each workstream against the overall timeline.

The Stanford GSB Search Fund Primer includes diligence checklists that serve as a reasonable starting point. Most experienced searchers customize these significantly based on the specific industry, business model, and financing structure of the deal.

The goal of diligence is not a perfect report — it is an informed decision. The best searchers use diligence to build conviction, price risk into their offer, and arrive at closing with a clear-eyed view of what they are taking on. The process is not about finding a reason to walk away; it is about confirming that the business you are buying is the business you think you are buying.

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Frequently Asked Questions

Common Questions

How long does due diligence typically take for a search fund acquisition?
Most search fund diligence runs 60–90 days post-LOI. The window is set by the exclusivity period negotiated in the LOI. SBA-financed deals often need the full 90 days to accommodate lender appraisals, environmental reports, and underwriting. Searchers who start building their advisor team and document request list before signing the LOI consistently close on schedule.
Do search fund entrepreneurs hire a Quality of Earnings firm?
Not always, but increasingly yes. QoE reports are standard practice for deals above $2M SDE or wherever financial complexity warrants independent validation — multiple revenue streams, significant owner add-backs, or complex inventory. SBA lenders frequently require QoE reports for deals above $5M. For smaller, simpler deals, a CPA review of tax returns and financials may be sufficient.
What is the single most important thing to verify in search fund diligence?
That the earnings are real, recurring, and transferable without the seller. 'Real' means traceable to bank statements. 'Recurring' means not dependent on one-time events or contracts that expire at close. 'Transferable' means customers, key employees, and vendors will continue with a new operator. The Stanford Selected Search Fund Study consistently shows that deals where one of these three conditions fails significantly underperform post-acquisition.
What are the most common deal-killers discovered during search fund diligence?
Customer concentration (one customer representing more than 20–25% of revenue), undisclosed owner adjustments that do not hold up to scrutiny, key-person dependencies where critical relationships or knowledge are held exclusively by the seller, undisclosed legal exposure, and working capital that is lower than represented. Most of these are discoverable with a structured diligence process — they are rarely surprises if you know what to look for.
How do searchers handle diligence when they have no M&A background?
The ETA community has robust resources for first-time buyers. The Stanford GSB Search Fund Primer and HBR Guide to Buying a Small Business (Ruback & Yudkoff) are essential reading. Searchfunder.com connects searchers with peers who have completed acquisitions. Most searchers also engage an M&A attorney and CPA who specialize in ETA deals from day one — these advisors provide the institutional knowledge the searcher has not yet developed personally.
What is the role of the seller during search fund due diligence?
The seller is simultaneously the primary information source, the business operator who must keep running the company through the process, and a future transition partner. Managing this relationship carefully is critical. Searchers typically negotiate a specific access protocol in the LOI — which employees can be interviewed, whether customers can be contacted, and when on-site visits occur. Diligence that is perceived as adversarial or disruptive to the business risks damaging the seller relationship needed for a successful transition.

Sebastian Krappe

CEO

Sebastian is the CEO and co-founder of DEALPRINT. He is a former investment banker and private equity investor who conducted far too many manual, painful diligence processes. He is passionate about making sure no investors, advisors, or brokers have to struggle with due diligence again. Sebastian holds a B.A. from Columbia University and is an MBA Candidate at the UC Berkeley Haas School of Business.

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