Integration Management Office (IMO) Post-Merger Integration Tools & Templates by Phase
The Integration Management Office M&A integration tools and completed templates on this page (in gold) help acquirers successfully manage integrations from the pre-close planning phase to the business as usual transition.
Pre-Close Planning. The IMO kickoff meeting brings executives, the IMO, and team leads together to discuss the integration approach, objectives, data-sharing rules, and the roles of the Integration Manager, Integration Management Office, and workstreams. After the meeting, the IMO completes its pre-close plan, oversees the development of the workstream plans, documents decision rights in a RACI matrix, sets the meeting cadence, and implements the reporting process.
Day 1 and Week 1. The IMO reviews Day 1 readiness to ensure every workstream has completed its required preparation and that the combined company can operate effectively on the morning of close. With readiness confirmed, the IMO implements its Day 1 plan by coordinating activities across workstreams, monitoring critical tasks, and keeping leadership informed of progress, open risks, and decisions requiring attention.
Day 8 Through Day 100. After the initial launch, the IMO follows its 100-day plan to drive the broader integration forward. The team tracks progress against milestones, manages risks and dependencies, expedites decision-making, and addresses issues that may slow progress. At 100 days, it conducts an integration team member survey to document insights about the transition.
| Phase | Deliverable/File | Summary |
|---|---|---|
| Pre-Close | IMO Charter and Tools | Defines the IMOs charter, key responsibilities, and the tools it uses to track and report integration progress |
| Pre-Close | Due Diligence Rules of Engagement | Spells out the antitrust-driven legal rules for pre-close conduct, including what data can be shared with Clean Team members and what topics can never be discussed |
| Pre-Close | Team Roles and Governance: 100-Day Integration | Defines the teams, roles, decision rights, operating cadence, and controls needed to maintain an integration's momentum from Pre-Close through integration complete at Day 100. |
| Pre-Close | The Role of Post-Merger Integration Manager | Defines the scope and responsibilities of the Post-Merger Integration Manager role, clarifying how it drives strategy alongside the Steering Committee and IMO |
| Pre-Close | Integration Management Office (IMO) Roles and Responsibilities | Explains the key roles within the Integration Management Office and the responsibilities each one has in planning, managing, and delivering a successful integration |
| Pre-Close | IMO Workstream Kickoff Meeting | Launches the IMO workstreams by covering deal background, objectives, end states, governance, and near-term meeting cadence |
| Pre-Close | M&A Integration Team Roles & Responsibilities | Maps out integration team structure, showing how workstreams, the Steering Committee, and the IMO fit together |
| Pre-Close | Integration Management Office (IMO) M&A Integration Kickoff Meeting | Covers what every integration lead should know before they begin developing their detailed plans |
| Pre-Close | M&A Integration Management Office Kickoff Meeting | Reviews deal value drivers, guiding principles, governance structure, timeline, and next steps for workstream teams |
| Pre-Close | M&A IMO Kickoff Meeting | Kicks off the IMO with key merger facts, phases, governance structure, data sharing rules, and the first 30-day milestones |
| Pre-Close | Pre-Close Integration Management Office (IMO) Merger Integration Plan | Starts 2 months prior to close and covers the IMO tasks leading up to close with risks and milestones identified |
| Pre-Close | Due Diligence Process for M&A Integration Planning | Explains the due diligence process for integration planning including objectives, definitions, data access, and request-lists |
| Pre-Close | Post-Merger Integration Meeting Schedule | Defines series of mandatory meetings on team member schedules so focus on integration is maintained |
| Pre-Close | Post-Merger Integration RACI Matrix | Assigns Responsible, Accountable, Consulting, and Included roles across the steering committee, IMO, functional teams, synergy owners, and accounting for major integration tasks |
| Pre-Close | The Phases in a 100-Day Post-Merger Integration | Provides a concise visual overview of a three-phase accelerated integration framework — Pre-Close Planning (Days -60 to 0), Day 1/Week 1 Execution (Days 1 to 7), and Integration Complete (Days 8 to 100) |
| Pre-Close | Pre-Close Data Sharing Rules | Establishes the rules and workflow for classifying and sharing sensitive deal data between Acquirer and Acquired Co ahead of close |
| Day 1 / Week 1 | Day 1 Integration Management Office (IMO) M&A Plan | Act as command center coordinating everything — running the war room, monitoring every workstream in real time, and resolving blockers |
| Day 1 / Week 1 | Integration Management Office M&A Day 1 Readiness | Confirms whether the integration is ready to be executed as one coordinated effort with governance active, the war room operational, escalation paths clear, risks visible, and cross-functional dependencies actively managed |
| Days 8-100 | M&A Integration Transition to Regular Operations | Explains how and when integration work streams formally exit the IMO and transition into steady state operations |
| Days 8-100 | 100-Day Integration Management Office Post-Merger Integration Plan | Guides the integration from execution to close-out, ensuring disciplined governance, accountability, and a successful transition to business-as-usual |
| Days 8-100 | Survey on Integration Teams | Evaluates the integration teams performance across planning, communication, decision making, stakeholder engagement, and culture |
| Days 8-100 | Post-Merger Integration End State Log | Tracks and ensures remaining tasks are completed after the integration teams disband |