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Post-Merger Integration Checklist

A checklist for post-merger integration execution.

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What's included

  • Immediate actions (Day 1)
  • First 30 days
  • First 100 days
  • First year
  • Ongoing optimization

Best used when

  • Executing post-merger integration
  • Tracking integration milestones
  • Managing workstream progress
  • Ensuring nothing falls through cracks

The template

Overview

INTEGRATION EXECUTION PHILOSOPHY

Making Integration Work

POST-MERGER INTEGRATION FUNDAMENTALS

EXECUTION PRINCIPLES:
☐ Speed matters - fast integration beats slow
☐ People first - they determine success
☐ Communicate constantly - silence breeds fear
☐ Quick wins build momentum
☐ Culture cannot be forced
☐ Track and measure progress

CRITICAL SUCCESS FACTORS:
☐ Day 1 flawless execution
☐ Key talent retention (90%+)
☐ Customer continuity
☐ Synergy realization
☐ Cultural integration
☐ Team morale maintained

COMMON EXECUTION FAILURES:
☐ Day 1 chaos (not ready)
☐ Communication vacuum
☐ Key people leave
☐ Customer confusion
☐ Systems disruption
☐ Culture clash ignored

INTEGRATION EXECUTION

Day 1 Comprehensive Checklist

═══════════════════════════════════════
DAY 1 EXECUTION CHECKLIST
═══════════════════════════════════════

PRE-CLOSE CONFIRMATION (T-0):
☐ Wire transfer confirmed
☐ Legal closing documents signed
☐ All conditions satisfied
☐ Deal officially closed
☐ "Go" message sent to teams

ANNOUNCEMENT SEQUENCE:
6:00 AM ET:
☐ Leadership team notification
☐ Board notification

8:00 AM ET:
☐ Joint leadership call
☐ Final message alignment

9:00 AM ET:
☐ Acquired company all-hands
☐ Acquirer company all-hands
☐ Combined leadership message

10:00 AM ET:
☐ Press release issued
☐ Website updates live
☐ Social media posts
☐ Investor notification

10:30 AM ET:
☐ Customer notification emails
☐ Partner notification emails
☐ Vendor notification emails

Throughout Day:
☐ Manager 1:1s with direct reports
☐ Q&A sessions by function
☐ Open door for questions
☐ HR support available

OPERATIONS (Day 1):
☐ Legal close confirmed
☐ Bank accounts transferred
☐ Payroll system updated
☐ Benefits continuation confirmed
☐ System access granted
☐ Email working
☐ Badge/building access active
☐ IT helpdesk ready

LEADERSHIP ACTIVITIES:
☐ Joint leadership meeting
☐ Integration team kickoff
☐ Manager briefings complete
☐ Q&A document distributed
☐ Escalation process active
☐ End-of-day debrief

First 30 Days Comprehensive Checklist

═══════════════════════════════════════
DAYS 1-30: STABILIZATION
═══════════════════════════════════════

WEEK 1 (Days 1-7):

PEOPLE PRIORITIES:
☐ Key retention conversations (all critical)
☐ Org structure communicated
☐ Reporting lines clarified
☐ All employees know their manager
☐ Open positions clarified
☐ Immediate concerns addressed

COMMUNICATION PRIORITIES:
☐ Daily FAQ updates
☐ Manager office hours
☐ Leadership visibility
☐ Rumor management
☐ Customer reassurance calls

OPERATIONS PRIORITIES:
☐ Critical process continuity
☐ Customer escalation path
☐ Support continuity
☐ Business as usual

WEEKS 2-4 (Days 8-30):

PEOPLE:
☐ All employee 1:1s completed
☐ Retention packages finalized
☐ Compensation alignment reviewed
☐ Benefits harmonization planned
☐ Performance continuity confirmed
☐ Role clarity achieved

OPERATIONS:
☐ Customer handoff plan activated
☐ Vendor notification complete
☐ Contract novation started
☐ System access normalized
☐ Process documentation started

CULTURE:
☐ Values alignment sessions held
☐ Cultural integration kickoff
☐ Quick wins identified and executed
☐ Team building initiated
☐ Combined team meetings started

30-DAY CHECKPOINT:
☐ Retention metrics reviewed
☐ Employee sentiment checked
☐ Customer health confirmed
☐ Integration progress assessed
☐ Adjust plan as needed

First 100 Days Comprehensive Checklist

═══════════════════════════════════════
DAYS 31-60: INTEGRATION
═══════════════════════════════════════

SYSTEMS & PROCESSES:
☐ Systems migration plan approved
☐ Process harmonization underway
☐ Tool consolidation started
☐ Data migration planned
☐ Reporting unified

ORGANIZATION:
☐ Org restructuring executed
☐ All roles defined
☐ Spans of control normalized
☐ Management layers optimized
☐ New hires onboarding

OPERATIONS:
☐ Customer transitions progressing
☐ Vendor relationships normalized
☐ Contracts novated
☐ Policies harmonized
☐ Compliance verified

60-DAY CHECKPOINT:
☐ Integration on track
☐ Synergies progressing
☐ Culture emerging
☐ Team stability confirmed

═══════════════════════════════════════
DAYS 61-100: OPTIMIZATION
═══════════════════════════════════════

SYNERGY REALIZATION:
☐ Revenue synergies activated
☐ Cross-sell programs launched
☐ Cost synergies tracking
☐ Headcount optimization
☐ Vendor savings captured
☐ Real estate consolidated

CULTURE INTEGRATION:
☐ Unified culture emerging
☐ Communication rhythm established
☐ Shared rituals active
☐ Combined team events
☐ Success stories shared

MEASUREMENT:
☐ Engagement survey conducted
☐ Customer satisfaction measured
☐ Synergy tracking live
☐ Integration scorecard updated

100-DAY CELEBRATION:
☐ Milestones recognized
☐ Team acknowledged
☐ Lessons captured
☐ Next phase planned

Integration Progress Tracker

Milestone Target Date Owner Status Completion Date Notes
Day 1 Complete
Week 1 Review
30-Day Review
60-Day Review
100-Day Complete
6-Month Review
Year 1 Review

Integration Health Scorecard

Dimension Score (1-10) Status Notes
Key talent retention 🟢🟡🔴
Customer continuity 🟢🟡🔴
Synergy realization 🟢🟡🔴
Cultural integration 🟢🟡🔴
System integration 🟢🟡🔴
OVERALL

Frequently asked questions

What is the Post-Merger Integration Checklist?

A checklist for post-merger integration execution.

Who is the Post-Merger Integration Checklist for?

It is built for CEOs and their teams working on M&A & Exit. The AI coach adapts it to your company, stage, and goals.

What's included in the Post-Merger Integration Checklist?

2 working sections: Overview; Day 1 Comprehensive Checklist.

How long does the Post-Merger Integration Checklist take to use?

It saves roughly 50+ hours versus building from scratch. Our AI coach can tailor the checklist to your situation in minutes, then hand you a step-by-step plan.

Is the Post-Merger Integration Checklist free?

Yes. You can read the full checklist and start getting coached through it for free. Sign in to save your tailored version and track your next steps.

How does the AI coach help with the Post-Merger Integration Checklist?

The coach teaches you the framework, asks a few questions about your business, tailors the checklist to you, and gives you measurable next steps to execute.