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BlogM&A operations

Post-merger integration for professional services roll-ups

In an RIA, accounting, insurance or law roll-up, integration is operations work, and integration capacity, not capital, limits how many deals you can absorb.

The four phases, where integrations fail, and what to automate so the next deal runs like the last one.

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The four phases of an integration

PhaseOperations workDone when
Before closeOperational diligence: systems, data quality, client agreements, billing method, open work, vendor contracts, recordsAn integration budget and timeline based on the target's real data
Close to day 1Client communication, consents or new engagement letters where required, regulatory filings, day-1 service coverageEvery client contacted, every response tracked
Days 1 to 90Client record and document migration, billing conversion with a parallel run, access, paperwork for any account or carrier movesClients served from your systems; billing reconciled
Days 90 to 180Retire the acquired firm's systems, reconcile, close vendor contracts, archive records, measureOne stack; open exceptions at zero; the playbook updated
A phase plan that fits RIA, accounting, insurance and legal acquisitions. Industry specifics differ; the shape holds.

01Capacity

Deals close faster than operations can absorb them.

Each acquisition lands as hundreds of per-client tasks: a consent or engagement letter, paperwork signed, a record migrated, a bill checked. The same small team does it on top of normal work.

The usual way

Hire for every deal, or let integrations overlap and run two stacks for a year.

Caddi

Build the integration once in Automate. It runs the same way on the next deal, so capacity grows without a hire per acquisition.

02Failure modes

Integrations fail in the same five places.

Paperwork rejected, duplicate client records, billing that doesn't match the agreement, consents never recorded, documents lost with an old system. Each has the same control: one source of truth, a check before the action, an exception list a person clears.

The usual way

Spreadsheets per deal, rebuilt by whoever ran the last one.

Caddi

Paperwork prefilled from the CRM record and sent through DocuSign, records created from the acquired firm's export with probable duplicates held for review, and exception lists delivered to the person who clears them.

03Burnout

The integration runs on your team's evenings.

The acquired staff learn new systems while answering anxious clients; your operations team runs the migration on top of the day job. People leave mid-transition.

The usual way

Overtime, temps and a very long first 90 days.

Caddi

The repetitive steps run as automations, so people keep their attention on clients and the exceptions that need judgment. Govern shows every run across the firm.

Caddi

See how Caddi AI Agents can run every acquisition through the same integration playbook and absorb more deals without burning out your operations team

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Frequently asked questions

What is post-merger integration?

Post-merger integration (PMI) is the work of combining an acquired firm with the acquirer after the deal closes: clients, people, systems, data, processes, contracts and compliance. In professional services firms such as RIAs, law firms, accounting firms and insurance agencies, most of that work is operational: re-papering clients, migrating data, converting billing, and retiring the acquired firm's systems.

What are the phases of a post-merger integration?

A practical frame is four phases: before close (operational diligence and the integration plan), close to day 1 (client communication, consents and regulatory filings), days 1 to 90 (data, document, billing and system migration), and days 90 to 180 (retiring old systems, reconciling and measuring). Firms that skip the last phase often run two stacks for a year.

What is integration capacity?

Integration capacity is how many acquisitions an organization can absorb well at the same time. For serial acquirers it is usually set by the operations team, not by capital or deal flow: each deal brings a burst of repetitive work, such as paperwork, data migration and reconciliation, on top of the team's normal workload. Standardizing and automating that work is how acquirers raise capacity without adding headcount for every deal.

Why do post-merger integrations fail?

In professional services the recurring failures are operational: client paperwork returned with errors, duplicate client records after a data import, billing that does not match signed agreements, consents that were never recorded, documents lost when old systems are retired, and staff who burn out doing the transition on top of their day jobs. Each has a simple control: one source of truth, a check before every action, and an exception list a person clears.

What parts of post-merger integration can be automated?

The high-volume, rules-based steps: creating client records from the acquired firm's export, prefilling consent forms, new agreements and other paperwork from one record, sending them for e-signature and tracking status, filing signed documents, and producing exception lists for billing and data mismatches. Judgment calls stay with people: deal terms, consent strategy, fee decisions and client conversations.

What is on a post-merger integration checklist?

Before close: inventory the target's systems and exports, sample its client data, collect agreement templates, document billing and non-standard fees, list work in flight and vendor contracts, and map where records live. Close to day 1: agree consent strategy with counsel, send approved notices and track every response, file regulatory updates, publish day-1 coverage. Days 1 to 90: map data before importing, match to prevent duplicates, prefill paperwork from one record, run a parallel bill, move documents into your structure. Days 90 to 180: retire systems after archiving records, reconcile, close contracts by their notice dates, measure and update the playbook.

How do RIA, law, accounting and insurance integrations differ?

The shape is the same; the paperwork differs. RIAs collect advisory contract consents, update Form ADV and often repaper custodial accounts. Law firm mergers start with conflicts across both client lists. Accounting and tax roll-ups re-issue engagement letters and migrate practice management data. Insurance agency roll-ups handle book transfers, carrier appointments and agency management system migration.