Reverse due diligence — when the seller vets the buyer.

For a buyer, the most useful thing about reverse due diligence is knowing it's coming — because the modern agency deal almost never closes all-cash below the upper-middle market. Earnouts, rollover equity, seller financing, and retention bonuses put a meaningful slice of the seller's proceeds in the buyer's hands for years, so the seller is rationally underwriting the buyer's ability to pay and to run the book well. A buyer who walks in ready to be vetted wins; one who treats the seller's questions as an insult loses deals to acquirers who came prepared.

§ 01 · Four investigation areasWhat sellers vet.

Sellers investigate four areas. Proof of funds tests whether the buyer can actually pay. Integration track record tests how prior acquisitions held together. Earnout performance history tests whether the buyer's prior earnouts actually paid out — directly relevant when the seller's own proceeds depend on one. And post-close stewardship tests how the buyer ran the agencies it bought, because the independent-agency community is small and word about a bad acquirer travels. Three structural drivers pushed this into the mainstream: deferred deal structures (20%–40% of economics arriving over 2–5 years), expanded buyer universes (PE platforms, family offices, first-time individuals, out-of-market consolidators all bidding), and circulating post-close horror stories. The carrier-approval process the seller also watches is in carrier change-of-control approval.

§ 02 · Committed vs. contingentThe proof-of-funds distinction.

The committed-versus-contingent distinction is the heart of proof of funds, and a buyer should walk in able to evidence it cleanly. Committed capital — money the buyer already controls — can be shown with a capital-account statement, a custodian letter, a bank confirmation, or a private-equity general-partner closing commitment, and it makes the closing probability high. Contingent capital — identified but not yet secured, like a debt facility the buyer intends to draw or an equity raise still in process — isn't disqualifying, but it changes the seller's read on closing probability and timeline risk, which the seller will price into their choice between buyers. For a buyer, the lesson is to know which kind of capital backs the offer and to present it proactively, because a seller weighing two comparable offers will favor the one whose funding is demonstrably committed over the one whose funding is still coming together.

§ 03 · Integration and earnout signalsThe track-record read.

The track-record areas carry specific signal bands a buyer should expect to be measured against. On integration, sellers look at staff retention at 12 and 24 months (under 85% at month 24 is a signal of a rough integrator) and carrier retention at 12 months, especially on the top-5 carriers whose contingency programs often don't transfer cleanly. On earnout performance, an 85%–100% payout history signals an operating model consistent with the structure the buyer offers, while a 40%–60% payout history signals a pattern — aggressive targets, operating decisions that erode achievability, or disputes with prior sellers. The earnout-period operational flags sellers watch for are concrete: consolidating back-office, renaming the agency, reassigning carrier relationships, or changing commission structures during the earnout window — each shifts earnout outcomes in the buyer's favor and against the seller. And a threshold matters: a buyer with 10+ deals can produce a meaningful earnout-payout track record, while a buyer on their first or second deal can't, so a seller should price that uncertainty (converting an earnout to an escrow release, or reducing the earnout proportion). A buyer who knows these bands can either present a strong record or proactively address a thin one.

§ 04 · References and the 48-hour edgeWhat wins the deal.

Two final signals decide how a buyer is read. On references, seller references (3–5 prior sellers, with names, roles, contact, and permission to speak freely) beat customer references, because they answer the question that matters — what was this buyer like to sell to and be acquired by — and a neutral-to-positive reference with a specific, honest caveat reads as more credible than an unreservedly enthusiastic one, which looks cherry-picked. On readiness, the single sharpest signal is response time: a prepared buyer responds to a reverse-diligence packet in 48 hours, while an unprepared one takes two weeks to assemble it per deal — and that 48-hour readiness is a competitive advantage that wins deals at better terms, because it signals an organized, serious, repeat acquirer. The takeaway for a buyer is to treat reverse diligence as a deliverable to prepare in advance, not a request to react to: a standing packet (committed-capital evidence, integration metrics, earnout history, seller references) turns the seller's vetting from a hurdle into a differentiator. The integration data this packet draws on is in AMS integration diligence.

◆