Clause guide

Material Adverse Change (MAC)

How material adverse change allocates risk, which wording controls, and what to verify in the signed agreement.

High attentionM&A Diligence
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  • Which business, financial, or legal effects meet the stated threshold?
  • Which industry, economy, force-majeure, pandemic, or disproportionate-effect exceptions apply?
  • Which closing, termination, notice, cure, and burden-of-proof provisions interact?
Next move

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Overview

What this clause actually does

A material-adverse-change provision allocates the risk of serious deterioration between signing and closing or during another contractual period. Its definition, exclusions, disproportionate-effect carvebacks, measurement horizon, burden of proof, and relationship to closing conditions control its reach. It may provide an exit right in some circumstances, but it is not necessarily the only off-ramp; ordinary closing conditions, covenants, termination rights, and other remedies may also apply.

Why it matters

Why people get burned by this clause

Material adverse change can change economics, timing, control, or remedies. Its effect turns on the signed wording, related sections, transaction facts, and applicable law; a market label or isolated sentence does not settle the result.

Red flags

What should make you slow down

  • The document does not clearly answer: Which business, financial, or legal effects meet the stated threshold?
  • The document does not clearly answer: Which industry, economy, force-majeure, pandemic, or disproportionate-effect exceptions apply?
  • The document does not clearly answer: Which closing, termination, notice, cure, and burden-of-proof provisions interact?
Where it appears

Where you usually see it

  • Asset purchase agreements
  • Stock purchase agreements
  • Letters of intent
Inkvex review

What the platform checks in the live contract

  • Which business, financial, or legal effects meet the stated threshold?
  • Which industry, economy, force-majeure, pandemic, or disproportionate-effect exceptions apply?
  • Which closing, termination, notice, cure, and burden-of-proof provisions interact?
Review questions

What to test against your deal

  • Confirm in the document: Which business, financial, or legal effects meet the stated threshold?
  • Confirm in the document: Which industry, economy, force-majeure, pandemic, or disproportionate-effect exceptions apply?
  • Confirm in the document: Which closing, termination, notice, cure, and burden-of-proof provisions interact?
Related reading

Articles that go deeper

12 Acquisition Contract Clauses SMB Buyers Must Check
The 12 APA and deal-document clauses that can change price, closing certainty, and post-close recovery in an SMB acquisition.
FAQ

Common questions about this clause

What controls the effect of material adverse change?

The signed wording, definitions, exceptions, related provisions, governing law, and the transaction facts. Review the clause in that full context rather than relying on a general benchmark.

What should I verify in material adverse change?

Which business, financial, or legal effects meet the stated threshold? Which industry, economy, force-majeure, pandemic, or disproportionate-effect exceptions apply? Which closing, termination, notice, cure, and burden-of-proof provisions interact?

The bottom line

Treat material adverse change as a document-specific allocation of risk. Identify the trigger, scope, exceptions, procedure, and consequence, then verify consequential legal conclusions for the governing jurisdiction.

Use the clause in context

See how this clause behaves in the real contract.

The clause library gives you a starting point. Document analysis can surface relevant language, show related sections, and organize risk signals and follow-up questions for review against the source file.

Surfaces relevant clause language with document context
Flags one-sided language, not just keywords
Organizes issues and follow-up questions for review
Links back to glossary, pricing, and workflow pages when you need more context
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