12.1 Hobby vs. Business (Profit Motive)
Key Takeaways
- IRC §183 governs activities not engaged in for profit.
- IRS uses 9-Factor Test to distinguish business from hobby.
- Post-TCJA (Tax Year 2025): hobby expenses = 0% deductible (TCJA's §67(g) suspension was made permanent by OBBBA).
- Hobby income: fully taxable, no SE tax.
- Presumption: profit in 3 of 5 years (2 of 7 for horses).
- Form 5213: postpone hobby determination.
Why This Matters for the Exam
Hobby loss is a classic audit trigger. Know the 9-factor test and the post-TCJA trap (0% deductions).
Exam Note: For the July 2026 – February 2027 testing window, you are tested on §183 rules as of December 31, 2025 (Tax Year 2025). The One Big Beautiful Bill Act (OBBBA, signed July 4, 2025) made the TCJA suspension of miscellaneous itemized deductions permanent — hobby expenses remain non-deductible.
Expect at least 3-4 questions on hobby vs. business.
The Core Distinction
| Feature | Trade or Business (§162) | Hobby (§183) |
|---|---|---|
| Primary goal | Profit | Recreation |
| Loss treatment | Deductible (subject to limits) | 0% (disallowed) |
| Income reporting | Schedule C / K-1 | Schedule 1, Line 8j |
| SE Tax | Yes (on net profit) | No |
The 9-Factor Test (Treas. Reg. 1.183-2)
| Factor | Business Indicator |
|---|---|
| 1. Manner of conduct | Professional books, budgets, analysis |
| 2. Expertise | Consults advisors, studies market |
| 3. Time and effort | Significant hours invested |
| 4. Asset appreciation | Land value offsets operating losses |
| 5. Success in other activities | Track record of turning businesses around |
| 6. History of income/losses | Startup losses normal, 15 years = problem |
| 7. Occasional profits | Potential for significant wins |
| 8. Financial status | Not using losses to offset high salary |
| 9. Personal pleasure | Emphasizes drudgery, not fun |
The 3-out-of-5 Presumption
| Activity | Presumption |
|---|---|
| General | Profit in 3 of last 5 years |
| Horses | Profit in 2 of last 7 years |
| Effect | Shifts burden of proof to IRS |
Form 5213
| Purpose | Description |
|---|---|
| Postpone determination | Delay hobby classification |
| Period | Until first 5 (or 7) years complete |
| Benefit | Buy time to turn profit |
The Tax Year 2025 Trap (Post-OBBBA)
| Rule | Effect |
|---|---|
| Hobby income | Fully taxable |
| Hobby expenses | 0% deductible (TCJA, made permanent by OBBBA) |
| Result | Taxed on gross income |
Real-World Scenario (2025)
Scenario: Executive sells $1,000 artwork in 2025 but spends $5,000 on supplies. IRS determines hobby.
- Income: $1,000 (taxable).
- Deductions: $0 (TCJA, now permanent under OBBBA).
- Result: Taxed on full $1,000.
On the Exam
Expect 3-4 questions on hobby, typically:
- 9-Factor Questions: "What is strongest business indicator?"
- Presumption Questions: "How many profit years for horses?"
- TCJA/OBBBA Questions: "Hobby expenses deductible?"
The key is to remember: 9 factors, no single decisive. 3 of 5 (2 of 7 horses). TCJA = 0% deductions (made permanent by OBBBA). Hobby income fully taxable, no SE tax.
Executive: $1,000 art sales, $5,000 supplies. IRS says hobby. Tax effect?
Strongest business indicator under 9-factor test?
Horse breeding presumption requires profit in how many years?