Passive Activity Rules and Mobile Home Park Owners: A Plain-English Guide

There is no area of tax law that confuses MHP investors more than the passive activity rules. You do a cost segregation study, generate a large paper loss from depreciation, and then your CPA tells you that you can’t use it to offset your W-2 income. The loss sits in a “carryforward” account, not reducing any current tax. What happened?

What happened is IRC §469. Understanding the passive activity rules — in plain English, not tax jargon — is essential for every MHP owner who wants to actually use the tax benefits their park generates. This guide explains the rules, the exceptions, and the planning strategies that can make these losses work for you.

What the Passive Activity Rules Are (and Why They Exist)

Congress enacted IRC §469 as part of the Tax Reform Act of 1986 to prevent high-income taxpayers from using real estate and other investment losses to shelter their W-2 wages and business income. Before 1986, tax shelters routinely generated paper losses from real estate depreciation that wealthy investors used to eliminate income tax from their professional income.

The basic rule: losses from “passive activities” can only be deducted against income from other “passive activities.” They cannot offset “non-passive” income — your W-2 wages, self-employment income, active business income, or portfolio income (dividends, interest, capital gains).

If your passive losses exceed your passive income in a given year, the excess losses are suspended — they become “passive activity loss (PAL) carryovers” that move forward to future years. Those PAL carryovers are released when you have passive income to absorb them, or when you dispose of the passive activity in a fully taxable transaction.

What Makes an Activity Passive?

An activity is passive if you do not “materially participate” in it. Rental activities — which includes most MHP lot-rental operations — are treated as passive by default under IRC §469(c)(2), regardless of how many hours you spend managing the park.

This is the rule that surprises most MHP investors: even if you work full-time in your park — collecting rent, hiring contractors, responding to resident issues — your lot-rental income and losses are passive unless you qualify for one of the exceptions. The passive presumption for rental activities is strong.

The Seven Material Participation Tests

Under Treasury Regulation §1.469-5T, you materially participate in an activity if you satisfy any one of seven tests. For most MHP owners, the most relevant tests are:

Test 1: 500-Hour Test

You materially participate if you perform more than 500 hours of services in the activity during the year. For a self-managing MHP owner who is actively involved in operations, this is the most achievable test — but remember that rental activities are passive by default regardless of hours unless you qualify for the real estate professional exception.

The 500-hour test applies to non-rental activities and to certain situations where the rental activity is treated as non-passive (POH operations, for example). Track your hours carefully with contemporaneous records — the IRS regularly challenges unsupported hour claims.

Test 2: Substantially All Test

You materially participate if your participation in the activity constitutes substantially all participation by all individuals for the year. For a solo MHP operator with no employees, this test may be satisfied even with fewer than 500 hours.

Test 5: Five of Ten Years Test

You materially participated if you materially participated in the activity for any 5 of the preceding 10 years. Useful for a long-term MHP owner who once was active but has stepped back from operations.

Test 7: Facts and Circumstances

If none of the other tests are met, you may still materially participate based on all facts and circumstances, provided you participate for more than 100 hours and the activity is a significant participation activity. This is the most subjective test and the most difficult to rely on without supporting documentation.

The Real Estate Professional Exception

The most powerful exception to the passive activity rules for MHP owners is real estate professional status under IRC §469(c)(7). If you qualify, your rental activities — including your MHP lot rental — are treated as non-passive, allowing you to deduct rental losses against your other income without limitation.

To qualify as a real estate professional, you must satisfy two tests for the tax year:

1. More than 750 hours of services performed in real property trades or businesses in which you materially participate
2. More hours in real estate than in any other trade or business during the year

Both tests must be met. If your spouse works a full-time W-2 job (2,000+ hours), they cannot qualify as a real estate professional for the year — unless they can also demonstrate more than 2,000 hours in real estate, which is generally implausible while also working full-time elsewhere.

For a married couple where one spouse manages the parks full-time and does not hold outside employment, real estate professional status is potentially achievable. The qualifying real estate professional’s status benefits the couple’s joint return — so the non-working spouse’s full-time real estate activities can unlock the working spouse’s MHP losses.

Even if you qualify as a real estate professional, you still need to materially participate in each rental activity (or make a grouping election — discussed below) for the losses from that activity to be non-passive.

Grouping Multiple MHPs as a Single Activity

If you own multiple mobile home parks, you can make a “grouping election” under Treas. Reg. §1.469-4 to treat all your MHP activities as a single activity for passive activity purposes. This has important implications for material participation: instead of demonstrating 500 hours in each park, you demonstrate 500 hours across all parks combined.

For a real estate professional with multiple parks, grouping can also simplify the material participation analysis. Grouping is made on a tax return and is generally irrevocable (with limited exceptions). Make this election intentionally, with an understanding of how it affects both current and future tax years.

Passive Activity Loss Carryovers: The Silver Lining

PAL carryovers aren’t wasted — they’re deferred. Every passive loss that can’t be used in the current year carries forward indefinitely until one of three events occurs:

1. You generate passive income in a future year — the carryover offsets the passive income dollar-for-dollar
2. You dispose of the activity in a fully taxable transaction — all suspended passive losses related to that activity are released and can offset any type of income (active, passive, or portfolio)
3. Your estate inherits the activity — the step-up in basis rules interact with PAL carryovers in complex ways; a portion of the carryover may be permanently lost at death

The disposition event is particularly important. When you sell your MHP in a taxable transaction, you unlock all accumulated PAL carryovers from that park. Those losses can offset the gain from the sale — including Section 1250 recapture and capital gains. For many MHP owners, the PAL carryover accumulated over years of ownership becomes one of the most valuable assets they hold at exit time.

POH Operations as Potentially Non-Passive

If your MHP derives income not just from lot rent but from substantial services provided to residents — laundry facilities, organized maintenance programs for POHs, regular recreational programming — there is an argument that the POH-related operations constitute an active trade or business (rather than a rental activity). Under IRC §469(c)(4), a rental activity is excluded from passive treatment if the average rental period is 7 days or less, or if certain extraordinary personal services are provided.

These arguments are fact-intensive and should be carefully evaluated before relying on them. Most standard MHP lot-rental operations will not meet these standards. Consult a tax professional who specializes in MHP operations before claiming non-passive treatment based on services.

For related reading, see our posts on tax strategy for first-time MHP buyers, MHP partnership structures, and estate planning for MHP owners.

Disclaimer: This content is provided for general educational purposes only and does not constitute tax, legal, or financial advice. The passive activity rules are highly fact-specific. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making any decisions based on this information. The MHP Accountant® provides tax services — not legal advice.