Key Takeaways

  • Hobby = no profit motive. Business = profit motive.
  • Hobby income fully taxable; hobby expenses NOT deductible.
  • 3-of-5 rule: Profit 3 of 5 years = presumption of business.
  • Horse activities: 2-of-7 year rule.
  • IRS uses nine factors from Reg. §1.183-2 to determine profit motive.
  • Hobby income reported on Schedule 1, Other Income.
Last updated: January 2026

Hobby Loss Rules

Why This Matters for the Exam

Hobby loss rules create a significant tax trap. The exam tests the 3-of-5 rule, the nine factors, and the tax consequences.

Expect at least 2-3 questions on hobby losses.

Business vs. Hobby: Why It Matters

ClassificationIncomeExpensesSE Tax
BusinessSchedule CDeductibleYes
HobbySchedule 1NOT deductibleNo

The Hobby Trap

EffectResult
Report 100% of incomeFully taxable
Deduct 0% of expensesNo deduction whatsoever
Net effectGross receipts tax

The 3-of-5 Presumption (Safe Harbor)

RuleDescription
PresumptionProfit 3 of last 5 years = business
EffectBurden shifts to IRS to prove hobby
Horse activities2-of-7 years instead

Nine Factors (Reg. §1.183-2)

The IRS considers these factors if 3-of-5 is not met:

FactorQuestion
1. Manner of conductBusiness-like books and records?
2. ExpertiseKnowledge in the field?
3. Time and effortSubstantial time devoted?
4. Asset appreciationExpect assets to increase in value?
5. Prior successProfitable in similar activities before?
6. HistoryStart-up losses or sustained losses?
7. Occasional profitsAny profitable years?
8. Financial statusOther income to fund losses?
9. Personal pleasureInherently fun or recreational?

Factor Analysis

Indicates BusinessIndicates Hobby
Professional books/recordsSloppy or no records
Expert knowledgeNo relevant expertise
Full-time effortWeekends only
Assets appreciatingAssets depreciating
Prior business successNo prior business experience
Losses during start-up onlySustained large losses
Occasional profitable yearsNever profitable
Relies on this incomeHas "day job" funding losses
Activity is work-likeActivity is inherently fun

Reporting Hobby Income

ItemLocation
IncomeSchedule 1, Part I (Other Income)
ExpensesNowhere (not deductible)
SE TaxNot applicable

Hobby Example

ItemAmount
Hobby income$5,000
Hobby expenses$8,000
Taxable income from hobby$5,000
Deductible expenses$0
Net tax effect+$5,000 taxable income

Real-World Scenario

Scenario: Taxpayer breeds rare birds as a "business." They have lost money every year for 6 years. They have a full-time job as an accountant. They spend weekends on the activity and find it relaxing.

  • 3-of-5 test: Failed (no profits in 5 years).
  • Nine factors: Many indicate hobby (losses, other income, personal pleasure, part-time effort).
  • Likely classification: Hobby.
  • Tax result: All income taxable, no expenses deductible.

On the Exam

Expect 2-3 questions on hobby losses, typically:

  1. Presumption Questions: "What is the 3-of-5 rule?"
  2. Horse Activity Questions: "What is the rule for horse activities?"
  3. Consequence Questions: "What happens to hobby expenses?"
  4. Reporting Questions: "Where is hobby income reported?"

The key is to remember: 3-of-5 = presumption of business. Horses = 2-of-7. Hobby = income taxable, expenses NOT deductible. Report on Schedule 1.

Test Your Knowledge

Taxpayer: Stamp collecting earned $2,000, spent $3,500. Classified as hobby. Taxable income effect?

A
B
C
D
Test Your Knowledge

Which activity has a 2-of-7 profit presumption?

A
B
C
D
Test Your Knowledge

Where is hobby income reported?

A
B
C
D