Chapter 7B — Net Operating Losses, Sourcing, and Casualty/Theft Losses

Federal Net Operating Losses (NOLs)

  • Definition: An excess of allowable deductions over gross income in a taxable year for federal income-tax purposes.
  • Carry-forward rule
    • NOLs generated after 2017 can be carried forward indefinitely.
    • Usage cap: may offset up to 80%80\% of taxable income (TI) in any future year.
    • Formula illustration
      Taxable Income after NOL=max⁡0, TI<em>pre-NOL−0.80×NOL</em>CF\text{Taxable Income after NOL} = \max{0,\ \text{TI}<em>{\text{pre-NOL}} - 0.80 \times \text{NOL}</em>{\text{CF}}}
  • No geographic sourcing limit—one consolidated federal return covers all U.S. income and losses.
  • Planning note: Because of the 80%80\% ceiling, very large NOLs often take multiple years to fully absorb.

California Net Operating Losses & Non-Conformity

  • Conformity difference: CA rejects the federal 80%80\% cap. A CA NOL can offset 100%100\% of CA-taxable income when allowed.
  • Suspension rule (budget measure):
    • Applies to businesses with net income > 1,000,0001,000,000.
    • CA NOLs incurred in tax years 2020-2026 are suspended and cannot be used until after 1 January 2027.
    • Suspended NOLs still retain their original carry-forward life; the “clock” stops during the suspension.
  • Practical example
    • 2024 CA NOL of $500,000\$500,000 → first year it can offset income is 2027.
    • Federally, that same $500,000\$500,000 could offset 80%80\% of 2025 federal TI, creating a mismatch in state vs. federal taxable income and deferred-tax accounting items.
  • Ethical/administrative angle: Tax preparers must clearly disclose NOL suspension impacts to clients to avoid unexpected CA tax bills.

Multistate Sourcing Rules (California Focus)

  • Federal return: worldwide U.S. income—no sourcing segregation.
  • California return for non-residents or part-year residents:
    • Only the California-source share of income and losses is reported.
    • Therefore, only the California-source portion of an NOL may be carried forward.
    • Example:
    • Amazon operates in all 50 states and shows a nationwide NOL of $10 000,000\$10\,000,000.
    • CA apportionment factor = 15%15\%.
    • CA NOL available to carry forward = 15%×$10 000,000=$1 500,00015\% \times \$10\,000,000 = \$1\,500,000.
  • Significance: Multistate taxpayers maintain two NOL schedules—one federal, one CA—often with different magnitudes and utilization dates.

Casualty & Theft Losses

  • Federal rule (post-2017 TCJA): Deduction permitted only for losses attributable to a federally declared disaster area.
  • California rule: Personal casualty and theft deductions allowed state-wide, regardless of federal disaster declaration.
  • Computational mechanics remain identical between jurisdictions (loss amount, insurance reimbursement reduction, 10%10\% AGI floor, etc.).
  • Implication: A taxpayer outside a federal disaster zone can still deduct a qualifying casualty loss on the CA return even though it is disallowed federally, generating another state-to-federal difference.

Integrated Example Scenario

  1. 2024 wildfire destroys inventory for a California-only sole proprietorship. Loss = $300,000\$300,000; no insurance. Business also posts operating loss = $800,000\$800,000.
  2. Federal:
    • Casualty deduction denied (no federal disaster area).
    • NOL created = $800,000\$800,000 → can offset 80%80\% of future TI.
  3. California:
    • Casualty deduction allowed: additional $300,000\$300,000 loss.
    • Total CA NOL = $1,100,000\$1,100,000; however, if net income ever exceeds $1M\$1M in suspension years, utilization delayed until 2027.
  4. Result: Deferred-tax asset arises for CA purposes; careful schedule tracking required.

Key Takeaways & Exam Tips

  • Memorize the 80%80\% federal limitation vs. CA’s no limitation but potential suspension.
  • Know the dates: CA suspension through 1 Jan 2027 for businesses with >$1M\$1M net income.
  • Understand sourcing: Only CA-source NOL can be carried forward for non-residents/part-year residents.
  • Casualty/theft: “Federally declared disaster” is the operative phrase for federal deductibility; CA is broader.
  • Expect exam questions that contrast federal vs. CA treatment in the same year, creating book-tax differences and requiring separate carry-forward schedules.

Quick Reference Formulas

  • Federal NOL usage ceiling: Deductible NOL<em>current year=0.80×TI</em>pre-NOL\text{Deductible NOL}<em>{\text{current year}} = 0.80 \times \text{TI}</em>{\text{pre-NOL}}
  • CA NOL usage (when permitted): Deductible NOL<em>CA=min⁡NOL</em>CF, TICA\text{Deductible NOL}<em>{\text{CA}} = \min{\text{NOL}</em>{\text{CF}},\ \text{TI}_{\text{CA}}}
  • CA-apportioned NOL: CA NOL=Total NOL×CA Apportionment Factor\text{CA NOL} = \text{Total NOL} \times \text{CA Apportionment Factor}