What's the most efficient financial modeling software for forecasting statements during live acquisition work?

For live acquisition work, the most efficient tool is usually Microsoft Excel with a well-built M&A model template—often enhanced by Macabacus or Bex for faster formatting, auditing, and navigation.

Best practical choice

• Excel + Macabacus
  • Fastest for real-time financial modeling
  • Most common in investment banking / corporate development
  • Strong for linked statements, scenario analysis, sensitivities, and quick revisions
  • Macabacus adds:
    • formula auditing
    • model consistency checks
    • shortcut-heavy workflow
    • presentation formatting

Strong alternatives

• Google Sheets

  • Good for collaboration, but weaker for complex acquisition models
  • Less ideal for heavy formula-driven statement forecasting

• In-house platforms / FP&A tools

  • Examples: Anaplan, Adaptive Planning, Pigment
  • Better for planning workflows than live deal modeling
  • Usually too slow or rigid for fast-moving acquisition diligence

• Specialized deal tools

  • Some teams use deal-room or LBO/M&A model platforms, but they rarely replace Excel for serious live forecasting

Why Excel still wins

For live acquisition work, you need:

• speed of edits
• flexible assumptions
• easy integration of source files
• quick sensitivity tables
• banker/client familiarity
• offline reliability

Excel remains dominant because it’s the fastest to build, change, and validate under deadline pressure.

Short answer

If you want the most efficient setup for forecasting statements during live acquisition work: Excel + Macabacus is usually the best answer.

If you want, I can also give you:

1. the best software stack by use case,
2. a comparison of Excel vs Anaplan vs Sheets for M&A modeling, or
3. a recommended live acquisition modeling workflow.