Untangling passive activity rules for business and rentals

Passive activity rules are a perennial source of confusion for taxpayers and a recurring planning opportunity for tax professionals. While the concept may seem straightforward, determining whether an activity is passive or nonpassive often requires careful consideration of the facts, the taxpayer’s level of involvement and how the activity is reported.

At the heart of these rules is a deceptively simple question: Can losses from an activity offset other income, or are they limited until future years? The answer can have significant tax consequences. 

Understanding passive vs. nonpassive activities 

Under §469 of the Internal Revenue Code, passive activities generally include trades or businesses in which the taxpayer does not materially participate, as well as most rental activities. The key limitation: passive losses can only offset passive income. They cannot be used to reduce wages, portfolio income or most business income reported on Schedule C, Profit or Loss From Business, or K-1s from active businesses.

Nonpassive activities, on the other hand, allow losses to flow through currently and offset other income, subject to basis, at-risk and other limitations. This distinction is critical. Misclassifying an activity can lead to disallowed losses, amended returns or unwelcome IRS correspondence.

Material participation: the deciding factor

For non-rental trades or businesses, material participation is the linchpin. The IRS provides seven tests for material participation, and meeting just one is enough to treat the activity as nonpassive. The most common tests include:

• Participating more than 500 hours during the year
• Participation that constitutes substantially all of the activity, or 
• Participating more than 100 hours when no one else participates more

For example, a taxpayer who owns and works in a small manufacturing business year-round and can document their involvement with calendars or logs is likely materially participating. In contrast, a taxpayer who owns a business but relies almost entirely on a manager may find their activity classified as passive if their involvement doesn’t meet the required threshold.

Rental real estate and the real estate professional exception 

Rental real estate is generally treated as passive, regardless of participation. However, there is a significant exception for real estate professionals. If a taxpayer qualifies as a real estate professional and materially participates in their rental real estate activities, those rentals can be treated as nonpassive.

To qualify, taxpayers must spend more than 50% of their personal service time in real property trades or businesses and perform more than 750 hours of services in those activities during the year. Importantly, the taxpayer must also materially participate in each rental activity, unless a valid election is made to group them. Documentation is essential; courts have consistently rejected estimates or logs prepared after the fact. 

Grouping activities and Form 8582

Grouping activities can simplify compliance, but it must be done thoughtfully. Activities may be grouped if they form an appropriate economic unit, considering factors such as similarities, common control and geographic location. Once grouped, the activities are treated as a single activity for purposes of material participation and passive loss limitations. Grouping decisions are not easily changed, and improper grouping can distort results on Form 8582, Passive Activity Loss Limitations.

Tax professionals should revisit grouping elections periodically, especially when facts change, properties are sold or new activities are added.

Why the rules matter

Passive activity loss limitations don’t eliminate losses. They defer them. Disallowed losses carry forward and may be used in future years when the activity produces passive income or when the taxpayer disposes of the activity in a fully taxable transaction.

For tax professionals who want a deeper dive into determining passive versus nonpassive activities, applying the material participation tests in real-world scenarios, evaluating real estate professional status and correctly reporting results on Form 8582, attend our webinar, Passive Activity Rules Made Practical Webinar, on May 7, 2026, or access on demand after the live event.