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National Law Review
National Law Review
5/11/2026
In Liberty Global, the Tenth Circuit Leaves Taxpayers with an Opinion with Unresolved Questions

In Liberty Global, the Tenth Circuit Leaves Taxpayers with an Opinion with Unresolved Questions

Short summary

Tenth Circuit ruled in Liberty Global v. United States that the economic substance doctrine applies to tax transactions designed to exploit code loopholes, denying a $2.4B deduction and imposing 40% penalties, though the decision provides limited guidance for future cases.

  • Tenth Circuit upheld denial of $2.4B tax deduction and 40% penalty in 'Project Soy' transaction
  • Confirmed economic substance doctrine applies even to transactions mechanically compliant with tax code
  • Left unresolved how broadly the doctrine applies, creating continued uncertainty for taxpayers

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