Hobby Loss Rules: Section 183 and the Profit Motive
The nine factors, the three-of-five-years presumption, and what happens to expenses when the activity is a hobby
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
The hobby loss rules under section 183 deny business deductions for an activity not engaged in for profit. If the IRS treats an activity as a hobby, its income is taxable but its business expenses are not deductible; the deduction that once allowed them is permanently gone. A profit motive is judged on nine factors and a three-of-five-years presumption.
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Why do the rules exist?
Without them, anyone with a loss-making pastime — horses, photography, a boat chartered a few weekends a year — could deduct the losses against wages. Section 183 draws the line at intent: a business carried on to make a profit may deduct its losses (subject to the other limitations); an activity carried on for personal pleasure may not, even if it produces some income. The rule is not about whether the activity actually makes money — a genuine business can lose money for years — but about whether making money is the honest objective.
What are the nine factors?
| Factor | What the IRS looks for |
|---|---|
| Businesslike manner | Separate bank account, books and records, a business plan, changes in methods to improve profitability |
| Expertise | The taxpayer's own knowledge, or consultation with experts in the field |
| Time and effort | Substantial time spent, especially where the activity has no recreational appeal |
| Expectation that assets will appreciate | A land-based activity may be for profit even with operating losses if the land is expected to appreciate |
| Success in other activities | A history of turning unprofitable ventures into profitable ones |
| History of income or losses | Start-up losses are expected; losses continuing beyond the normal start-up period weigh against a profit motive unless explained (weather, market conditions) |
| Occasional profits | Even sporadic profits, or the opportunity for a substantial one, support a profit motive |
| Financial status | A taxpayer with substantial other income who can absorb the losses draws more scrutiny |
| Elements of personal pleasure | Enjoyment does not disqualify a business, but an activity that is primarily recreational and consistently loses money looks like a hobby |
No single factor decides. The IRS and courts weigh all nine, and the first — the businesslike manner — is the one the taxpayer controls most directly.
What is the three-of-five-years presumption?
An activity that shows a profit in at least three of the last five tax years (two of seven for horse breeding, training, showing, or racing) is presumed to be engaged in for profit, shifting the burden to the IRS. The presumption is rebuttable and it is not a safe harbor in the other direction: an activity that fails the test is not automatically a hobby — the nine factors still decide. A taxpayer can elect on Form 5213 to postpone the determination until the end of the fifth year of the activity (the seventh for horse activities) — filed within three years of the first year's return due date — which prevents the IRS from raising the issue during the start-up years but extends the statute of limitations for those years.
What happens if it is a hobby?
Income from the activity is reported on Schedule 1 (Form 1040), line 8j — taxable in full. Business-type expenses are not deductible: the pre-2018 rule allowed them as a miscellaneous itemized deduction, limited to the hobby's income and subject to the 2 percent-of-AGI floor, but that deduction was suspended for 2018 through 2025 and the 2025 legislation made the suspension permanent (IRC 67(h)). Expenses deductible without any profit motive — mortgage interest and property taxes on property the hobby uses — remain itemized deductions on Schedule A. The result is that a hobby with US$8,000 of income and US$12,000 of expenses produces US$8,000 of taxable income and no deduction — worse than break-even. Cost of goods sold is the exception: for a hobby that sells goods, the cost of the items sold reduces the gross income reported, because it is a reduction of income rather than a deduction.
What does reclassification cost?
If the IRS reclassifies a Schedule C business as a hobby on examination, the losses claimed are disallowed for the open years, income tax and interest are assessed, and the accuracy-related penalty may apply. A taxpayer with three years of US$20,000 losses offsetting wages faces roughly US$60,000 of added income plus the penalty. The activities most often examined: those with consistent losses, substantial other income, and recreational character — horses, boats, aircraft, collectibles, farms that are really country homes, and side businesses that never quite start.
How do you document a profit motive?
Run it like a business from day one: a separate account, real books, a written plan with projections, records of time spent, evidence of expertise sought, and — most persuasively — changes made in response to losses (a price increase, a dropped product line, a new market). Keep the records that show the activity is being managed toward profit, not merely enjoyed with receipts kept.
Worked example
A software engineer earning US$210,000 starts a photography business: US$14,000 of equipment (expensed), US$9,000 of revenue in year one, US$16,000 in year two, US$22,000 in year three — losses in the first two years, a small profit in the third. Factors in his favor: a separate business account and bookkeeping, a website and pricing structure, a mentorship with an established photographer, 600 documented hours a year, and a shift from portrait work to higher-margin commercial clients after year one's loss. Against: substantial other income and an activity with recreational appeal. The trajectory toward profit and the businesslike changes carry the analysis; the losses are deductible. His neighbor, who bought the same equipment, shot friends' weddings for cost, kept no books, and reported a loss each year for six years, is reclassified — the losses for the open years disallowed, the income taxable, and nothing deductible against it.
Frequently asked questions
What are the hobby loss rules?
Section 183's rules denying business deductions for an activity not engaged in for profit. A hobby's income is taxable and its expenses are not deductible; a business's losses are deductible subject to the other limitations.
What is the three-out-of-five-years test?
An activity profitable in three of the last five years (two of seven for horse activities) is presumed to be for profit. Failing the test does not make an activity a hobby — the nine factors still decide.
Can I deduct hobby expenses at all?
Not the business-type expenses. The miscellaneous itemized deduction for them was suspended in 2018 and the 2025 legislation made the suspension permanent. Cost of goods sold still reduces a hobby's reportable income, and expenses deductible anyway — such as mortgage interest and property taxes — stay on Schedule A.
How do I prove a profit motive?
Businesslike operation: separate accounts, books, a written plan, time records, expertise sought, and documented changes made in response to losses.
Official sources
The IRS states: “A business operates to make a profit. People engage in a hobby for sport or recreation, not to make a profit.” — Internal Revenue Service, Earning side income: Is it a hobby or a business?, https://www.irs.gov/newsroom/earning-side-income-is-it-a-hobby-or-a-business
The IRS states: “Use Schedule C (Form 1040) to report income or loss from a business you operated or a profession you practiced as a sole proprietor.” — Internal Revenue Service, About Schedule C (Form 1040), Profit or Loss from Business, https://www.irs.gov/forms-pubs/about-schedule-c-form-1040
Next step
Fairlight Accounting is a cross-border accounting and tax practice with a U.S. Tax Desk and a Canadian Tax Desk. Our U.S. Tax Desk handles profit-motive documentation for loss-year businesses, Form 5213 elections, and examination defense on section 183 reclassification. See pricing or book a call.
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