What Is Passive Income? IRS Definition and Material Participation Rules

The IRS definition of passive income, set out in Internal Revenue Code Section 469, covers earnings from a trade or business in which you do not materially participate during the tax year, plus almost all rental income regardless of how involved you are. The classification matters because passive losses can only offset passive income; they cannot reduce the tax on your wages, your business profits, or your investment portfolio. Any loss you cannot use in the current year gets suspended and carried forward until you either generate passive income to absorb it or sell the activity outright.¹

The Three Income Buckets

Federal tax law sorts every dollar you earn into one of three categories. Active income (also called nonpassive) covers wages, salaries, tips, and profits from a business where you are meaningfully involved. Passive income covers earnings from a trade or business you don’t materially participate in, plus most rental income. Portfolio income sits in its own bucket and includes interest, dividends, annuities, and royalties that aren’t generated in the ordinary course of a trade or business.²

Portfolio income is specifically excluded from the passive category, so passive losses cannot be used to shelter dividends or interest.¹ Getting a dollar into the wrong bucket can mean either overpaying now or losing a deduction entirely.

What Makes an Activity Passive

Two things push a source of income into the passive column. The first is a trade or business you invest in but don’t work in on a regular basis. The second is rental real estate, which the IRS treats as passive by default even if you personally spend weekends screening tenants and fixing plumbing.² The only way out of the rental default is qualifying as a real estate professional, which is a demanding standard covered below.

The passive activity rules apply to individuals, estates, trusts, closely held C corporations, and personal service corporations.¹ For most business income, the question is entirely about how involved you are — not how much you earn, not how much you own.

The Seven Material Participation Tests

If you materially participate in a non-rental business, the income is active, not passive. Treasury Regulation 1.469-5T gives you seven ways to prove material participation, and you only need to satisfy one:³

You participated more than 500 hours during the tax year.
Your participation was substantially all the participation of any individual in the activity.
You participated more than 100 hours, and no one else participated more than you did.
The activity is a significant participation activity (more than 100 hours), and your combined hours across all such activities exceed 500.
You materially participated in the activity in any five of the previous ten tax years.
The activity is a personal service activity (health, law, engineering, accounting, consulting, and similar fields), and you materially participated in any three prior tax years.
You participated on a regular, continuous, and substantial basis under all the facts and circumstances. Fewer than 100 hours won’t meet this test, and management work alone doesn’t count if anyone else spent more time managing.

The 500-hour test is the cleanest path. The fourth test is the one that trips people up most often: 150 hours in one business, 200 in another, and 180 in a third look small individually, but the combined 530 hours can push all three into active status under the aggregation rule.

Proving Your Hours

The IRS does not require a daily time log. Any reasonable method works — an appointment book, a calendar with brief notes, or a written narrative describing the services performed and approximate time spent.² Vague claims collapse fast under audit. A calendar entry that reads “2 hrs — showed unit to prospective tenant, handled maintenance call” is easy to keep and far more defensible than reconstructing a year after the fact.

Common Sources of Passive Income

Rental Real Estate

Rental property is the passive activity most people encounter. Federal law presumes the income is passive whether you use a management company or handle everything yourself.²

Limited Partnerships

Limited partners provide capital but don’t run the business; the general partner does. Because limited partners lack management authority, the IRS treats their share of income as passive. They can only prove material participation through three of the seven tests: the 500-hour test, the five-of-ten-years test, or the personal service activity test.³

Publicly Traded Partnerships

Publicly traded partnerships (PTPs) face an even stricter version of the rules. A loss from one PTP can only offset income from that same PTP; it cannot be netted against passive income from a rental property or a different partnership.²

The Self-Rental Trap

If you own a building and lease it to a business where you materially participate, such as leasing a warehouse to your own S corporation, Treasury Regulation 1.469-2(f)(6) recharacterizes the net rental income as nonpassive. The rental income no longer sits in your passive bucket and can’t absorb passive losses from other properties. But if the same self-rental produces a loss, that loss stays passive. The one-way reclassification catches business owners off guard because it looks like an ordinary landlord-tenant arrangement.

How Passive Losses and Suspended Losses Work

Passive losses only offset passive income. If a rental produces a $15,000 loss and your limited partnership produces $10,000 in passive income, you can deduct $10,000 this year. The remaining $5,000 is suspended and carried forward to future years, waiting for passive income to absorb it.¹ Some investors carry suspended losses for many years before ever using them.

Releasing Suspended Losses by Selling

The big release comes when you sell your entire interest in the activity in a fully taxable transaction to an unrelated buyer. At that point all accumulated suspended losses become deductible against any type of income: active, passive, or portfolio.¹ Each word matters. It must be the entire interest, the gain or loss must be fully recognized (so a like-kind exchange or an installment sale that defers gain does not qualify), and the buyer cannot be related to you.⁴ Selling half the property will not trigger the release.

Suspended Losses at Death

Death is a worse exit than a sale. Suspended losses become deductible on the decedent’s final return only to the extent they exceed the step-up in basis the heir receives. If $80,000 in suspended losses sat on a property and the heir’s stepped-up basis is $60,000 higher than your adjusted basis, only $20,000 of the loss survives. The other $60,000 disappears into the heir’s basis.¹

The $25,000 Rental Loss Allowance

Congress carved out one significant exception to the passive loss wall. If you actively participate in a rental real estate activity, you can deduct up to $25,000 in rental losses each year against nonpassive income such as wages, business profits, and portfolio earnings.¹ Active participation is a lower bar than material participation. Approving tenants, setting rental terms, and signing off on repairs generally qualifies as long as you own at least 10% of the property by value.²

The allowance phases out at higher incomes. It begins shrinking once your modified adjusted gross income exceeds $100,000, losing 50 cents for every dollar above the threshold, and disappears entirely at $150,000 MAGI.¹ Married filing separately taxpayers who lived with their spouse at any point during the year get zero, not a reduced amount. Married filing separately taxpayers who lived apart the entire year get a reduced $12,500 allowance with a phase-out starting at $50,000 MAGI.²

These dollar figures are written into the statute and are not adjusted for inflation, so more households drift out of the allowance each year.

Qualifying as a Real Estate Professional

The real estate professional exception removes the automatic passive label from rental activities, but it requires clearing two tests in the same tax year. You must spend more than 750 hours in real property trades or businesses in which you materially participate, and more than half of all personal services you perform during the year must be in those real property trades or businesses.² The second prong effectively rules out most people with a full-time job outside real estate. Working 2,000 hours at a desk job would require more than 2,000 hours in real estate activity to clear the “more than half” hurdle.

Meeting real estate professional status doesn’t automatically turn every rental into an active activity. You still need to materially participate in each rental, which typically means clearing 500 hours on that property. There is an election on your return to group all rentals into a single activity so that combined hours count together. Skip that election and the IRS looks at each property separately, which can be fatal for a landlord who spreads time across several units.

The 3.8% Net Investment Income Tax

Passive earnings can face an additional 3.8% Net Investment Income Tax (NIIT) once your modified adjusted gross income crosses these thresholds:⁵

Married filing jointly or qualifying surviving spouse: $250,000
Single or head of household: $200,000
Married filing separately: $125,000

The tax hits the lesser of your net investment income or the amount your MAGI exceeds the threshold. Net investment income for NIIT purposes includes rents, income from passive businesses, interest, dividends, capital gains, and annuities.⁶ Income from a business in which you materially participate is excluded, which is one more reason material participation status matters. These thresholds have not been adjusted for inflation since the tax took effect in 2013.

Estates and trusts hit the NIIT at a compressed threshold — $15,650 for 2025, adjusted annually.⁵

Reporting Passive Activity on Your Return

Form 8582 (Passive Activity Loss Limitations) is where the math happens. It calculates how much of your passive loss is allowed for the current year and how much carries forward.⁷ The underlying income and expenses usually flow through Schedule E for rental properties and partnerships, but Form 8582 is the gatekeeper that decides how much of the loss actually reaches your return.

You can skip Form 8582 only if all of the following are true: your only passive activities are rental real estate you actively participate in, you have no prior-year suspended losses, your total rental loss is $25,000 or less, and your MAGI is $100,000 or less.⁷ Married taxpayers filing separately must have lived apart from their spouse all year to use the shortcut.

Taxpayers subject to the NIIT report it on Form 8960, which calculates net investment income and adds the 3.8% surtax to regular tax liability.⁶ Corporations that fall under the passive activity rules file Form 8810 instead of Form 8582.

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
GovInfo. 26 CFR 1.469-5T – Material Participation (Temporary)
4
Internal Revenue Service. Topic No. 425, Passive Activities – Losses and Credits
5
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
6
Internal Revenue Service. Instructions for Form 8960
7
Internal Revenue Service. Instructions for Form 8582