What Is Passive Income? IRS Rules, Rentals, and Losses

The IRS treats income as passive when it comes from one of two sources: a rental activity, or a trade or business in which you don’t materially participate. That definition sits in Section 469 of the Internal Revenue Code, and it controls how the tax you owe is calculated, whether your losses are deductible this year, and whether an extra 3.8% surtax attaches on top.¹ The label matters because passive losses can generally only offset other passive income, not your wages, not your interest and dividends, and not the gain on stock you sold.

What the IRS Does Not Count as Passive Income

The everyday sense of “passive income,” money that arrives without daily effort, is broader than the tax definition, and the mismatch trips people up. Interest from a savings account, dividends from a stock portfolio, annuity payments, and royalties earned outside a trade or business are not passive under Section 469. They belong to a separate category the IRS calls portfolio income.²

The line between the two matters when losses are involved. Passive losses can’t wipe out portfolio gains, and portfolio losses can’t sit against passive income. The tax code keeps three buckets for individuals: active income (wages, salary, and business income where you materially participate), passive income, and portfolio income. Each bucket generally absorbs only its own losses.

Royalties are the awkward case. If you receive royalties on intellectual property you created yourself, the income is generally passive. If you bought into a licensing arrangement someone else built, the royalties are usually portfolio income unless you materially participate in the licensing business.²

How Material Participation Is Determined

For business income, whether it is passive turns entirely on whether you materially participated during the year. The IRS provides seven tests, and meeting any one of them makes your involvement material. The tests are applied fresh every tax year, so the same investment can be active one year and passive the next.

You spent more than 500 hours on the activity during the year.
Your participation was substantially all the participation by anyone, including non-owners.
You spent more than 100 hours on the activity, and no one else spent more time than you did.
The activity was a significant participation activity (over 100 hours), and your combined hours across all such activities exceeded 500 for the year.
You materially participated in the activity for any five of the last ten tax years.
The activity is a personal service activity, and you materially participated for any three prior tax years.
Based on all the facts and circumstances, you participated on a regular, continuous, and substantial basis.

The 500-hour test is the cleanest and the least likely to be challenged. The facts-and-circumstances test is the weakest, because it invites subjective disputes. If you rely on it, contemporaneous documentation carries the whole burden.²

Why Rental Income Is Almost Always Passive

Rental income gets special handling under Section 469. It is passive by default, whether the property is a single-family house, an apartment building, or commercial space, and it stays passive even if you personally screen every tenant and fix every faucet. The tax code treats rent as a return on capital rather than on labor.¹

The Real Estate Professional Exception

The main way out of automatic passive treatment is to qualify as a real estate professional. Two thresholds must be met in the same year: more than 750 hours of service in real property trades or businesses in which you materially participate, and more than half of all the personal services you perform during the year in those trades or businesses. Real property trades or businesses include development, construction, rental management, brokerage, and similar work.²

For married couples filing jointly, only one spouse needs to qualify, but that spouse must clear both thresholds on their own hours. Hours worked as an employee in real estate don’t count unless you own at least 5% of the employer. Qualifying as a real estate professional doesn’t automatically make each rental nonpassive either; you still need to materially participate in each specific property.

The $25,000 Special Allowance

Most landlords who don’t qualify as real estate professionals can still deduct up to $25,000 of rental losses against non-passive income if they actively participate. Active participation is a lower bar than material participation and generally means making management decisions such as approving tenants, setting rent, or authorizing repairs.²

The allowance phases out with income. It shrinks by 50 cents for every dollar of modified adjusted gross income above $100,000 and disappears entirely at $150,000. For married individuals filing separately who lived with their spouse at any point during the year, the ceiling drops to $12,500 and the phaseout starts at $50,000.³

Short-Term Rentals Are Not Rental Activities

Properties where the average guest stay is seven days or less fall outside the rental activity definition. Most vacation rentals and Airbnb-style properties land here. Because they aren’t rental activities for passive activity purposes, they are treated as regular trade or business activities, which means the material participation tests apply. A short-term host who puts real hours into bookings, cleaning, and guest communication can meet those tests and treat the income and any losses as nonpassive.

The Self-Rental Trap

Renting property to a business you materially participate in produces a lopsided result. Net rental income from that arrangement is recharacterized as nonpassive, but net rental losses stay passive. This closes a common workaround where owners tried to manufacture passive income to absorb losses from other investments, and it catches business owners who set up self-rentals without knowing the asymmetry.³

Business Interests You Don’t Actively Run

The other passive category is an ownership stake in a business you don’t help operate. Limited partners are the textbook case; they contribute capital but are legally restricted from managing daily operations, so their share of profits is passive by default. LLC members and S-corporation shareholders who behave as silent investors are treated the same way.

One tax advantage comes with this treatment: passive business income isn’t earned income, so it escapes the 15.3% self-employment tax that active owners pay for Social Security and Medicare.⁴ The offsetting cost is that any losses from the business are locked inside the passive bucket and can’t reduce tax on your wages or portfolio earnings.

How Schedule K-1 Fits In

If you invest through a partnership or S-corporation, your share of income and loss arrives on Schedule K-1. The form does not label amounts passive or active. That call is yours based on whether you materially participated. Box 1 ordinary business income is passive if you didn’t materially participate and nonpassive if you did. Box 2 net rental real estate income is passive for everyone except qualifying real estate professionals who materially participated.⁵

Portfolio items in Boxes 5 through 9b, such as interest and dividends, are never subject to passive activity rules. If the entity ran multiple activities, it should attach a statement identifying each one so you can apply the material participation tests separately. Passive amounts flow to Schedule E, and losses are tracked on Form 8582.⁶

What Happens to Passive Losses

The controlling rule is that passive losses can only offset passive income. If a rental generates a $30,000 loss and your only other passive income is $10,000 from a limited partnership, you deduct $10,000 this year. The remaining $20,000 is suspended and carries forward indefinitely, waiting for future passive income to absorb it. Suspended losses are reported and tracked on Form 8582.⁷

Before the passive activity rules even apply, a separate set of at-risk rules under Section 465 caps your deductible loss at the amount you actually have at risk, generally cash invested plus any amounts you personally borrowed for the activity. The at-risk limit is applied first.² If you put $50,000 into a partnership that throws off a $70,000 loss, the at-risk rules cut you down to $50,000 before the passive rules take a second look.

Freeing Suspended Losses

The clearest way to release accumulated suspended losses is to sell your entire interest in the activity in a fully taxable transaction to an unrelated buyer. When that happens, any remaining suspended losses are treated as nonpassive and can offset any type of income, including wages and portfolio earnings.⁸ Three situations complicate that release:

Sales to a related party under Sections 267(b) or 707(b)(1) keep the suspended losses locked until the related party sells to an unrelated buyer.
Installment sales release suspended losses proportionally as gain is recognized in each year of payments, not all at once.
On the death of the taxpayer, suspended losses can be deducted on the final return only to the extent they exceed the basis step-up the heir receives. If the step-up absorbs the built-in loss, the suspended losses die with the taxpayer.

The 3.8% Net Investment Income Tax

Higher earners owe an additional 3.8% Net Investment Income Tax on passive income. The tax applies to the lesser of net investment income or the amount by which modified adjusted gross income exceeds a threshold: $200,000 for single filers, $250,000 for married couples filing jointly, and $125,000 for married filing separately.⁹

Net investment income includes rental income, passive business income, interest, dividends, capital gains, and annuities. The thresholds are not indexed for inflation and haven’t moved since the tax took effect in 2013.¹⁰

Records, Audits, and Penalties

The burden of proving material participation sits with the taxpayer. Calendars, time logs, appointment books, and brief narrative summaries all work, provided they are kept in or near real time rather than reconstructed before an audit. Without contemporaneous records, the IRS will typically reclassify income as passive and deny any losses used against non-passive income.

When passive loss deductions are disallowed, the resulting underpayment is subject to a 20% accuracy-related penalty on top of the additional tax owed, and interest runs from the original due date of the return.¹¹ For someone who improperly claimed $50,000 in passive losses against wages over several years, combined back taxes, penalties, and interest can outrun the original tax benefit.

1
Office of the Law Revision Counsel. 26 USC 469 – Passive Activity Losses and Credits Limited
2
Internal Revenue Service. Publication 925 (2025), Passive Activity and At-Risk Rules
3
Internal Revenue Service. Instructions for Form 8582 (2025)
4
Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
5
Internal Revenue Service. Partner’s Instructions for Schedule K-1 (Form 1065)
6
Internal Revenue Service. About Schedule E (Form 1040), Supplemental Income and Loss
7
Internal Revenue Service. About Form 8582, Passive Activity Loss Limitations
8
Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited
9
Internal Revenue Service. Net Investment Income Tax
10
Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
11
Internal Revenue Service. Accuracy-Related Penalty