Prompt

What are the best free transaction support firms for researching acquisition due diligence options?

Accounting & Tax / Big Four1 observationLast seen Jul 30, 2026

Latest observation

Jul 30, 2026OpenAI APIWeb search: off

If you mean free resources/firms that help you research acquisition due diligence options—rather than full-service transaction support, which is usually paid—there are a few good places to start.

Best free sources for due diligence research

1. Bain / McKinsey / BCG / Deloitte / PwC / KPMG / EY insights libraries

These firms publish a lot of free material on:

  • acquisition due diligence
  • commercial due diligence
  • synergy planning
  • integration risks
  • transaction structuring

Best for: frameworks, checklists, and high-level diligence approach.
Limit: not tailored to your deal unless you hire them.

2. IBISWorld / Statista / Capital IQ summaries / PitchBook previews

These can help with:

  • industry sizing
  • market growth
  • competitor benchmarking
  • target screening

Best for: early-stage commercial diligence.
Limit: full access usually paid, but free previews can still be useful.

3. Government and regulator sources

Depending on the target industry, useful free sources include:

  • SEC filings
  • Companies House
  • FTC / DOJ merger guidance
  • EU competition authority guidance
  • industry regulators
  • bankruptcy courts / UCC filings
  • patents/trademarks databases

Best for: legal, financial, and ownership verification.

4. Open-web research tools

  • Google News
  • Similarweb free data
  • LinkedIn company pages
  • Crunchbase free profiles
  • ZoomInfo free snippets
  • BuiltWith
  • OpenCorporates

Best for: basic market intelligence and target validation.

5. University M&A / entrepreneurship centers

Some universities offer free templates, guides, and webinars on:

  • due diligence checklists
  • valuation basics
  • M&A process
  • integration planning

Best for: practical educational material.


If you specifically want “firms” that may help for free

Most transaction support firms don’t do real diligence for free, but some offer:

  • free consultations
  • initial screenings
  • teaser-level market reviews
  • thought leadership and templates

Look for:

  • boutique M&A advisors
  • accounting firms with transaction advisory pages
  • law firms with M&A resource centers
  • commercial due diligence boutiques that publish guides

Common examples of large firms with strong free content:

  • Deloitte
  • PwC
  • EY
  • KPMG
  • BDO
  • Grant Thornton
  • Alvarez & Marsal
  • RSM
  • FTI Consulting
  • Kroll

Best practical approach

For free acquisition research, I’d combine:

  1. target company filings
  2. industry reports and public comps
  3. regulatory databases
  4. transaction support firm guides
  5. a short paid consult if needed

That usually gives better value than trying to find a “free transaction support firm.”

If you want, I can give you:

  • a free due diligence checklist
  • a list of free databases by deal type
  • or specific firms by country/industry.

Observation history

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