Post-Merger Integration Planning Guide

Most M&A value destruction happens after the deal closes. Here's how to plan integration that actually captures intended value.

Start Before Close

Integration planning should begin during due diligence, not after signing. Key activities:

• Identify integration priorities
• Assess cultural compatibility
• Plan Day 1 requirements
• Establish integration governance

The First 100 Days

Day 1

• Communications to all stakeholders
• Leadership visibility
• Business continuity assurance

Days 2-30

• Integration team mobilisation
• Quick wins identification
• Detailed planning refinement

Days 31-100

• Major workstream execution
• Synergy capture initiation
• Progress tracking and adjustment

Common Pitfalls

Underestimating Culture

Technical integration is manageable. Cultural integration is where deals fail. Invest in understanding and bridging cultural differences.

Over-Promising Synergies

Be realistic about synergy timelines and certainty. Build contingency into plans.

Losing Key People

Identify critical talent early and have retention plans in place before close.

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