The deal closes and the clock starts. A slice's retention history is the seller's number; your number won't exist until every acquired policy has gone through at least one renewal under your ownership — which is exactly 90 days of work. The integration playbook is the difference between arriving at day 90 with the retention you underwrote and arriving with a hole. It's not complicated, but it is unforgiving: the failures are almost all preventable, and almost all happen in the first week.
§ 01 · The three phasesPre-close to stabilization.
| Phase | Window | Focus |
|---|---|---|
| Pre-close readiness | T-14 to 0 | Five parallel workstreams, all complete by day 0 |
| Close & cutover | Day 0–7 | Execute, fund, activate records, communicate, import |
| Early wins | Day 7–28 | Outreach, introductions, renewal readiness, cleanup |
| Renewal execution | Day 28–56 | Process renewals, proactive contact, monitor retention |
| Stabilization | Day 56–90 | Finish the cycle, calculate retention, finalize holdback |
Integration runs in three phases. Pre-close readiness (T-14 to 0) stages everything so nothing has to be invented after close. Close and cutover (day 0–7) executes the transfer. Post-close retention execution (day 7–90) splits into three sub-phases: early wins (day 7–28: customer outreach, producer and seller introductions, renewal readiness, management-system cleanup), renewal execution (day 28–56: process renewals, proactive customer contact, premium-retention monitoring, cross-sell), and stabilization (day 56–90: complete the first renewal cycle, calculate final retention, finalize the holdback, plan growth). Throughout, weekly retention monitoring tracks renewals by date, a rolling 30-day retention rate, churn patterns by carrier and line and customer size, premium growth (renewals at original versus declining premium), and top-account retention weighted disproportionately. The holdback that this retention number releases was set during the bolt-on structure.
§ 02 · Five workstreams, one deadlineDay-0 readiness.
Five pre-close workstreams run in parallel — data preparation, carrier paperwork, client communication, the service-team briefing, and the producer/seller transition briefing — and the gate is absolute: all five must complete by day 0, with no slippage into the post-close period. A workstream that lands late doesn't delay integration; it becomes early churn, because the customer experiences the gap directly.
The pre-close phase runs five workstreams simultaneously: data preparation (operations and IT, weeks 1–2), carrier paperwork (compliance and carrier relations, weeks 1–2), client communication (customer relations and marketing, weeks 1–2), the service-team briefing (week 2), and the producer/seller transition briefing (weeks 1–2). The completion gate is day-0 readiness — all five done by close, with no slippage, because anything unfinished at close is experienced by the customer as a service gap. Day 0 itself is a critical path: execute the purchase agreement, fund the payment, activate the customer records in your management system, send the client communication, confirm the seller is no longer servicing, and begin the data import. Day 1 completes the import, submits the carrier change-of-agent forms, runs a follow-up call with the seller, and briefs the service team. Days 2–7 monitor the imports for errors, chase the carriers on change-of-agent, begin customer outreach, and prepare for the first renewals. The carrier paperwork that anchors this is the change-of-control work in carrier-appointment acquisitions.
§ 03 · Three failure modesAnd their fixes.
Three failure modes account for most preventable early churn. Slow data import means customers can't be serviced because their policies aren't in the system yet — an immediate churn risk — and the fix is to plan the import logistics carefully, import in batches if needed, and keep the seller's data as a reference during the early post-close window. Weak customer communication means customers don't hear from anyone for two weeks, call the old agency, and get lost in the gap — and the fix is a strong day-0 communication plus week-1 follow-up calls. An unprepared service team means mistakes on renewals, customer frustration, and preventable churn — and the fix is heavy pre-close service-team training with the right expertise assigned to the book. All three failures share a root cause: a workstream that wasn't ready at day 0. That's why the readiness gate is the whole game — get the five workstreams done before close and the three failure modes simply don't fire.
§ 04 · The two things that decide itDay-0 comms and the first renewal.
Two moments carry disproportionate weight. The first is day-0 client communication — the single most important post-close action. Customers who learn about the transition immediately keep their trust; customers who learn two weeks later have already started to erode it, and some have already called the old agency. The communication vehicle (email, mail, phone, or a combination), the timing, and the messaging are all planned pre-close, not improvised. The second is the first renewal cycle, which is the real retention test: by day 90, every acquired policy has been through at least one renewal, and the data shows the actual retention number — not the seller's claimed number. All ninety days of activity funnel toward getting every renewal through that cycle cleanly. Hit both — immediate communication and a clean first renewal — and the slice delivers the retention the valuation assumed, which is the only number that ever really mattered. The verified retention input that the valuation rested on came out of slice due diligence.
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Terminology on this shelf
- The three phases
- Pre-close readiness (T-14 to 0), close and cutover (day 0–7), and post-close retention execution (day 7–90).
- Five pre-close workstreams
- Data prep, carrier paperwork, client communication, service-team briefing, producer/seller transition — all done by day 0.
- Day-0 readiness gate
- The rule that no workstream slips past close — a late workstream becomes early churn.
- The three failure modes
- Slow data import, weak communication, and an unprepared service team — all preventable.
- Day-0 communication
- The most important post-close action — immediate notice preserves trust; a two-week delay erodes it.
- First renewal cycle
- The real retention test — by day 90 every policy has renewed once and the true number shows.