Answers / Risk & Compliance

What is the sanctions '50 percent rule', and why does it make ownership analysis critical?

An advanced Risk & Compliance question — expect it in final rounds and case-heavy interviews (IB, PE, Big-4 Transaction Services).

THE SHORT ANSWER

Under OFAC's 50 percent rule (and similar EU guidance), an entity is itself treated as blocked/sanctioned if it is owned 50% or more, directly or indirectly, by one or more sanctioned persons — even if that entity is not itself named on the list. Crucially, ownership aggregates: if two separate SDNs each own 30%, together they own 60%, so the entity is blocked though neither alone hits 50%. It makes ownership analysis critical because screening names against the list isn't enough — you must trace beneficial ownership to determine whether listed persons control 50%+ in aggregate through chains and multiple holders. The practical challenge is opaque structures and the fact that the entity itself looks 'clean' on a name screen. Note EU rules emphasize 'control' as well as ownership thresholds. Getting this wrong means inadvertently dealing with a blocked party — a strict-liability sanctions breach.

WHAT INTERVIEWERS LISTEN FOR

  • ✓≥50% ownership by sanctioned persons makes an entity blocked, even if unlisted
  • ✓Ownership aggregates across multiple sanctioned holders
  • ✓Name-screening alone is insufficient — trace beneficial ownership
  • ✓EU also emphasizes control; breaches are strict-liability

COMMON MISTAKES

  • ✗Relying on name screening only
  • ✗Not aggregating multiple sanctioned owners
  • ✗Assuming an unlisted entity is automatically safe

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