Hobby Loss Rules Section 183

Overview: Navigating Hobby Loss Rules in 2026

The distinction between a hobby and a business is a critical one for taxpayers, particularly in the context of federal income tax. The Internal Revenue Service (IRS) scrutinizes activities that consistently generate losses, often reclassifying them as hobbies rather than legitimate businesses. This reclassification can have significant tax implications, primarily by limiting the deductibility of expenses. For the 2026 tax year, new restrictions introduced by the One Big Beautiful Bill Act (OBBBA) further heighten the importance of understanding and adhering to these rules, as hobby loss deductions are now limited to 90% of hobby income [1]. This guide provides a comprehensive overview of Section 183 of the Internal Revenue Code, commonly known as the Hobby Loss Rule, outlining its definition, eligibility criteria, claiming procedures, 2026 limits, common pitfalls, and relevant IRS code references.

What are Hobby Loss Rules (Section 183)?

Internal Revenue Code Section 183, titled "Activities not engaged in for profit," establishes the framework for distinguishing between activities undertaken for personal pleasure or recreation (hobbies) and those conducted with a genuine intent to generate profit (businesses). The core principle of Section 183 is that if an activity is not engaged in for profit, deductions attributable to that activity are generally limited. This means that while expenses related to a hobby can be deducted, they cannot exceed the income generated by that hobby, and they cannot be used to offset income from other sources [2].

The IRS defines an "activity not engaged in for profit" as any activity other than one for which deductions are allowable under Section 162 (trade or business expenses) or Section 212 (expenses for the production of income) [3]. The intent to make a profit is paramount, and the IRS does not rely on a taxpayer's self-declaration but rather evaluates a set of objective factors to determine this intent.

Who Qualifies: Distinguishing Between a Hobby and a Business

Determining whether an activity is a hobby or a business is crucial for tax purposes. The IRS employs a nine-factor test to assess a taxpayer's profit motive. No single factor is determinative; instead, the IRS considers all facts and circumstances, weighing each factor based on the specific situation [2]. Taxpayers should strive to meet as many of these factors as possible to support their claim of operating a business.

The Nine-Part IRS Test for Profit Motive:

• 1. The manner in which the taxpayer carries on the activity: Does the taxpayer conduct the activity in a businesslike manner, maintaining complete and accurate books and records? Do they operate similarly to other profitable businesses in the same field?
• 2. The expertise of the taxpayer or their advisors: Has the taxpayer, or their advisors, prepared for the activity by extensive study of its accepted business, economic, and scientific practices? Do they follow expert advice?
• 3. The time and effort expended by the taxpayer in carrying on the activity: Does the taxpayer spend significant personal time and effort on the activity, especially if it lacks personal or recreational aspects? Is it pursued full-time or part-time? Are qualified employees hired?
• 4. Expectation that assets used in the activity may appreciate in value: Does the taxpayer intend to profit from the appreciation of assets used in the activity, such as land?
• 5. The success of the taxpayer in carrying on other similar or dissimilar activities: Has the taxpayer previously converted unprofitable activities into profitable ones?
• 6. The taxpayer's history of income or losses with respect to the activity: Does the activity occasionally generate a small profit, or have there been substantial profits in some years?
• 7. The amount of occasional profits, if any: Are occasional profits substantial enough to indicate a profit motive, especially when compared to losses?
• 8. The financial status of the taxpayer: Does the taxpayer have substantial income from other sources that could offset losses from the activity, suggesting a lack of profit motive?
• 9. Elements of personal pleasure or recreation: Does the activity involve significant personal pleasure or recreational aspects, which might suggest it is not primarily for profit?

For an activity to be considered a business, the taxpayer must demonstrate a genuine intent to make a profit. This includes having a business plan, marketing efforts, and a willingness to adapt operations to improve profitability [1].

How to Claim Hobby Loss Deductions

If an activity is determined to be a hobby, taxpayers must report any income generated from it. Prior to 2026, hobby expenses were deductible as miscellaneous itemized deductions, subject to the 2% adjusted gross income (AGI) limitation. However, the Tax Cuts and Jobs Act (TCJA) of 2017 suspended miscellaneous itemized deductions for tax years 2018 through 2025. This meant that for these years, hobby expenses were generally not deductible, even up to the amount of hobby income.

For the 2026 tax year, the landscape changes again due to the One Big Beautiful Bill Act (OBBBA). While the TCJA's suspension of miscellaneous itemized deductions is set to expire, the OBBBA introduces a new limitation specifically for hobby losses. Taxpayers can now deduct hobby expenses only to the extent of 90% of their hobby income [1]. This means that 10% of hobby income will always be taxable, even if expenses exceed income. This new restriction makes proper business classification even more critical.

Hobby income should be reported on Schedule 1 (Form 1040), Line 8, "Other income" [2]. Deductible hobby expenses (up to 90% of hobby income for 2026) would typically be reported on Schedule A (Form 1040), Itemized Deductions, as miscellaneous itemized deductions not subject to the 2% AGI limit. However, given the new 90% limitation, taxpayers should consult with a tax professional to ensure correct reporting.

2026 Limits, Amounts, or Rates

The primary change for the 2026 tax year regarding hobby losses is the introduction of a 90% deduction limit under the One Big Beautiful Bill Act (OBBBA) [1]. This means that if an activity is classified as a hobby, taxpayers can only deduct 90% of their otherwise allowable hobby expenses, up to the amount of hobby income. The remaining 10% of hobby income will be subject to tax, regardless of the expenses incurred.

For example, if a taxpayer earns $1,000 from a hobby and incurs $1,200 in expenses, they can only deduct 90% of the hobby income, which is $900. The remaining $100 of hobby income will be taxable, and the $300 in excess expenses ($1,200 - $900) cannot be deducted or carried forward.

It is important to note that the general rules for what constitutes a deductible expense still apply. Expenses must be ordinary and necessary for the activity. The 90% limitation applies after determining the allowable expenses.

Common Mistakes That Cost Taxpayers Money

Taxpayers often make several common mistakes when dealing with hobby activities, leading to potential audits, penalties, and increased tax liabilities:

• 1. Failing to maintain adequate records: Without detailed and accurate records of income and expenses, it becomes challenging to prove a profit motive to the IRS. This is a fundamental requirement for any business activity [1].
• 2. Not operating in a businesslike manner: Treating an activity casually, without a formal business plan, separate bank accounts, or marketing efforts, can lead the IRS to classify it as a hobby [2].
• 3. Consistently reporting losses: While new businesses can incur losses, a consistent pattern of losses over several years without a credible plan for profitability is a red flag for the IRS. The presumption of profit motive (discussed below) is key here [3].
• 4. Misunderstanding the nine-factor test: Taxpayers may focus on only one or two factors, rather than addressing all nine factors the IRS considers when evaluating profit motive [2].
• 5. Ignoring the 2026 OBBBA changes: Failing to account for the new 90% deduction limit for hobby losses in 2026 can lead to incorrect tax calculations and underpayment of taxes [1].
• 6. Not seeking professional advice: The rules surrounding hobby losses can be complex. Consulting with a tax professional can help taxpayers correctly classify their activities and ensure compliance.

IRS Code Section Reference

The primary Internal Revenue Code section governing hobby losses is **Section 183: Activities not engaged in for profit** [3].

Additionally, taxpayers may refer to:

• Section 162: Trade or Business Expenses – Defines deductible business expenses.
• Section 212: Expenses for Production of Income – Allows deductions for expenses incurred in producing income.
• IRS Publication 535, Business Expenses – Provides guidance on what constitutes a business expense (though the last revision was for 2022, and taxpayers should refer to updated resources for 2026) [4].
• IRS Publication 334, Tax Guide for Small Business – Offers general information for self-employed individuals and small businesses [5].

Book a Consultation with Uncle Kam

Navigating the complexities of hobby loss rules, especially with the new 2026 OBBBA changes, requires expert guidance. Ensure your activities are correctly classified and optimize your tax strategy to avoid costly mistakes. Book a call with Uncle Kam's experienced tax strategists today to discuss your specific situation and develop a personalized plan. Visit https://unclekam.com/consultation/ to schedule your consultation.

References:

1. Avoid Hobby Loss Reclassification: Essential Strategies - Uncle Kam
2. Know the difference between a hobby and a business | Internal Revenue Service
3. 26 USC 183: Activities not engaged in for profit
4. Guide to business expense resources | Internal Revenue Service
5. Publication 334 (2025), Tax Guide for Small Business | Internal Revenue Service