Know exactly what to verify before acquiring an SEO, PPC, or full-service digital agency — from contract durability to key-man dependency and platform risk.
Acquiring a digital marketing agency in the $1M–$5M revenue range requires diligence well beyond reviewing tax returns. Because agency value is tied to intangibles — client relationships, team expertise, and recurring retainer revenue — buyers must verify what looks stable on paper is actually contractually and operationally durable. A single client departure, a founder-held relationship, or an unassignable contract can materially erode the business you just bought. This checklist covers the five most critical due diligence domains: revenue quality, client contracts, team and key-man risk, technology and platform dependency, and financial verification. Use it alongside your M&A attorney and CPA before signing a letter of intent or releasing any escrow.
Assess whether reported revenue is recurring, diversified, and sustainable post-close without the seller's involvement.
Request a client-by-client revenue breakdown for the past 36 months showing retainer vs. project income.
Retainer revenue is predictable and commands higher multiples; project revenue is volatile and can disappear post-close.
Red flag: More than 40% of revenue comes from one-time project work with no retainer component.
Calculate the percentage of revenue attributable to the top one, three, and five clients.
Concentration in a handful of clients creates existential churn risk if any relationship is founder-dependent.
Red flag: A single client exceeds 20% of total revenue or top three clients exceed 50%.
Verify monthly recurring revenue (MRR) by reconciling invoices and bank deposits for the trailing 12 months.
Sellers may overstate retainer revenue by including auto-renewed short-term contracts or one-time setup fees.
Red flag: Stated MRR does not reconcile to actual deposits within a 5% tolerance.
Review average client tenure and annualized churn rate across the full client base.
Long-tenured clients signal sticky relationships; high churn signals service delivery or relationship problems.
Red flag: Annual gross revenue churn exceeds 20% or average client tenure is under 18 months.
Verify that client agreements are written, assignable, current, and structured to survive a change of ownership.
Obtain and review all active client contracts, master service agreements, and statements of work.
Verbal or handshake agreements are unenforceable and may not survive a change-of-control event.
Red flag: More than 25% of active clients operate without a signed written agreement.
Confirm each contract contains an assignment clause permitting transfer to a new owner without client consent.
Contracts requiring client consent to assign give clients an exit opportunity triggered by the sale.
Red flag: Key contracts require client approval for assignment, creating churn risk at closing.
Review cancellation notice periods, auto-renewal terms, and any performance-based exit clauses.
Short notice periods (30 days or less) allow clients to leave quickly after ownership changes.
Red flag: Majority of contracts allow cancellation with 30 days or less notice and no penalty.
Check whether any contracts contain change-of-control provisions that void or renegotiate terms at acquisition.
Change-of-control clauses can allow clients to renegotiate pricing or exit immediately post-close.
Red flag: Any top-five client contract includes a change-of-control termination right.
Identify which individuals hold critical client relationships or operational knowledge and assess transition risk.
Map each active client relationship to the specific employee or founder who manages day-to-day communication.
Agencies where the founder owns all client relationships are nearly impossible to transition cleanly.
Red flag: The seller personally manages more than 50% of active client relationships without documented handoff plans.
Review all employee offer letters, non-solicitation agreements, and non-compete clauses for key staff.
Without enforceable agreements, key account managers can leave post-close and take clients with them.
Red flag: Senior account managers or specialists lack non-solicitation agreements or signed employment contracts.
Interview department heads and senior team members to assess retention risk and satisfaction levels.
High-performing digital specialists are in demand and may exit if the acquisition feels uncertain.
Red flag: Multiple key employees express intent to leave or are already interviewing elsewhere.
Evaluate whether documented SOPs exist for all core service delivery functions.
Undocumented processes live in people's heads, creating single points of failure when employees depart.
Red flag: No written SOPs exist for campaign setup, client reporting, or account management workflows.
Assess exposure to third-party platforms, vendor lock-in, and the durability of any proprietary tools or IP.
Identify the percentage of client revenue dependent on Google Ads, Meta, or any single ad platform.
Algorithm changes or policy violations can immediately impair results and trigger client churn.
Red flag: More than 60% of client engagements are single-platform dependent with no diversification strategy.
Review all software, SaaS tool, and platform subscriptions for transferability and change-of-ownership terms.
Some agency-tier platform licenses are non-transferable or require re-credentialing under a new owner.
Red flag: Agency platform partnerships (e.g., Google Partner status) cannot be transferred and require re-qualification.
Verify ownership of any proprietary reporting dashboards, campaign frameworks, or client-facing IP.
Proprietary tools that differentiate service delivery must be fully owned, not licensed from a third party.
Red flag: Proprietary tools were built by a contractor with no IP assignment agreement transferring ownership to the agency.
Assess whether any client ad accounts or analytics properties are owned by the agency rather than the client.
Agency-owned ad accounts are a liability — clients can dispute ownership and demand transfer at any time.
Red flag: The agency retains ownership of client Google Ads or Meta Business Manager accounts.
Confirm that reported earnings are accurate, normalized, and genuinely transferable to a new owner.
Obtain three years of accrual-based financial statements and reconcile to tax returns and bank statements.
Cash-basis or inconsistent financials make it impossible to accurately assess true profitability.
Red flag: Financials are cash-basis only, unreviewed by a CPA, or show material discrepancies versus tax returns.
Reconstruct EBITDA by identifying and verifying all seller add-backs including compensation, perks, and one-time items.
Overstated add-backs inflate SDE and result in buyers overpaying for normalized earnings.
Red flag: Add-backs exceed 25% of reported EBITDA or include recurring expenses misclassified as one-time.
Review accounts receivable aging and identify any clients with outstanding balances over 60 days.
Aged receivables in agencies often signal client dissatisfaction or disputed invoices that will not collect.
Red flag: More than 15% of outstanding receivables are over 60 days past due.
Analyze payroll and contractor costs as a percentage of revenue over the trailing three years.
Rising labor costs as a revenue percentage compress margins and may signal retention or pricing problems.
Red flag: Labor costs have increased more than 5 percentage points as a share of revenue over three years.
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Most digital marketing agencies with $500K–$2M in EBITDA sell at 3x to 5.5x EBITDA. Agencies with high retainer concentration, diversified client bases, vertical specialization, and a tenured team in place command the upper end of that range. Agencies with project-heavy revenue, high client concentration, or founder-dependent relationships typically close at 3x to 3.5x. Earnouts tied to client retention are common in deals where revenue quality is uncertain.
Start by reconciling the seller's stated monthly recurring revenue to actual bank deposits and invoices over the trailing 12 months. Then review each retainer contract for assignment clauses, cancellation notice periods, and change-of-control provisions. Finally, request client renewal history and churn data. Revenue that is not backed by written, assignable contracts with at least 60-day cancellation notice should be treated as at-risk in your valuation model.
SBA 7(a) loans are commonly used to finance digital agency acquisitions and are well-suited to this asset class. Most lenders will require 10–20% equity injection from the buyer, clean financials for the trailing three years, and evidence of recurring revenue. Because agencies are intangible-heavy businesses, some SBA lenders require a partial seller note or rollover equity to bridge any collateral shortfall. Expect total deal structures to combine SBA debt, a seller note of 5–15%, and occasionally a performance-based earnout.
The most common and costly mistake is failing to independently verify client relationship ownership before close. Many buyers accept the seller's characterization of relationships as 'team-managed' only to discover post-close that clients stay out of loyalty to the founder personally. Conduct reference calls with at least three to five active clients, confirm that account managers have direct relationships, and structure a meaningful portion of purchase price as an earnout tied to 12-month client revenue retention to protect against this risk.
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