IRC Section 469, which governs the treatment of passive losses, applies to individual taxpayers, estates and trusts. Closely-held C corporations and personal service corporations are also subject to the passive loss rules in an attempt to prevent taxpayers from creating these entities solely to avoid the passive loss rules (
see Q 
8695).
1  
  Planning Point: Even though the passive activity rules do not apply to grantor trusts, partnerships, and S corporations directly, they do apply to the owners of these entities (i.e., they are applied at the individual level, rather than the entity level).
2  
  The passive loss rules apply to S corporations and partnerships indirectly, because income and losses flow through the entity to apply at the individual taxpayer level (e.g., to the S corporation’s shareholders or partnership’s partners). 
See Q 
8967 and Q 
8930 for a detailed discussion of the pass-through rules applicable to S corporations and partnerships, respectively.  
  
  1.  IRC § 469(a)(2).  
2.  Temp. Treas. Reg. § 1.469-1T(b); IRS Pub. 925.