Individual Loss Limitation Rules

REG coverage of at-risk rules, passive-loss limits, suspended losses, hobby losses, and related disallowances.

This chapter explains why an economic loss does not always become a current tax deduction. REG expects candidates to separate the loss-limitation layers and determine whether the loss is deductible now, suspended, or permanently disallowed.

In This Chapter

How to Use This Chapter

  • Read this chapter when you can compute a loss but are unsure whether the taxpayer may use it.
  • Focus on the order of the limitation rules and what facts move an activity into or out of passive treatment.
  • Return here whenever a REG question involves basis, at-risk amount, participation, and disposition in the same scenario.

In this section

Revised on Friday, April 24, 2026