Rental Property Tax Planning for Millionaires: 2026 Guide

Rental real estate offers one of the last remaining non-cash tax deductions in the code: depreciation. A $500,000 residential rental property generates roughly $14,500 per year in depreciation deductions — reducing taxable income without any cash leaving your pocket. The problem for most $1M–$5M households is that the IRS's passive activity loss rules prevent that depreciation from offsetting your W-2 or business income. Understanding why, and the two ways around it, is the difference between a rental that enhances your after-tax return and one that silently accumulates suspended losses.

Depreciation: The Non-Cash Tax Shield

Residential rental property is depreciated over 27.5 years on a straight-line basis under IRC §168(c). Only the building depreciates — land does not. Your cost basis for depreciation is the purchase price minus the value attributable to land:¹

Depreciation reduces your taxable rental income whether or not the property is generating a profit. If you have $30,000 in gross rent, $15,000 in operating expenses, and $17,000 in mortgage interest, you have a net operating income of -$2,000 even before depreciation. Add a $15,000 depreciation deduction and your Schedule E shows a -$17,000 rental loss — created largely by a non-cash accounting entry.

Cost Segregation: Accelerating Depreciation

A cost segregation study reclassifies components of the building — appliances, carpeting, cabinetry, electrical systems, HVAC, parking areas, landscaping — into shorter depreciable lives (5, 7, or 15 years). Under the OBBBA (P.L. 119-21, July 2025), 100% bonus depreciation was permanently restored for qualifying property placed in service after January 19, 2025.² This means cost-segregated components can be fully expensed in year one — turning years of gradual deductions into a large front-loaded deduction.

On a $700,000 rental, a cost segregation study might identify $150,000–$200,000 in 5/7/15-year property. With 100% bonus depreciation, that's a $150,000–$200,000 year-one deduction versus $20,000 via straight-line. The economics depend on whether you can actually use the loss — which brings us to the passive activity rules.

Passive Activity Loss Rules: Why Your Rental Loss Is Probably Stuck

IRC §469 classifies rental activities as passive by default. Passive losses can only offset passive income — not wages, business income, interest, or dividends. For most $1M–$5M earners, all or most of the rental loss generated by depreciation sits suspended on Schedule E, accumulating but not reducing current-year tax liability.³

The $25,000 Special Allowance

There is one exception: taxpayers who "actively participate" in rental real estate — a lower standard than full material participation, meaning you make management decisions like approving tenants or setting rents — can deduct up to $25,000 of rental losses per year against ordinary income. But this allowance phases out dollar-for-dollar between $100,000 and $150,000 MAGI (IRC §469(i)(3)). At MAGI above $150,000, the allowance is fully eliminated.

For the typical $1M–$5M investor with $200,000+ in W-2 income, the $25K allowance is completely gone. Depreciation deductions accumulate as suspended losses — real tax assets, but deferred.

What Happens to Suspended Losses

Suspended passive losses don't disappear. They carry forward indefinitely and are released in three situations:

1. You generate passive income (e.g., from another rental that is profitable).
2. You sell the property in a fully taxable transaction — all suspended losses from that property are released in the year of sale and can offset any type of income.
3. You qualify as a real estate professional (see below).

This means a large cost segregation deduction on a high-income investor's rental may sit suspended for years — and then be released all at once in the sale year, creating a large offsetting deduction when you also have a large capital gain.

Two Ways to Unlock the Full Loss

1. Real Estate Professional Status (IRC §469(c)(7))

A taxpayer who qualifies as a real estate professional has rental activities treated as non-passive. This unlocks all rental losses — including large cost segregation deductions — against any type of income.

Two requirements must both be met annually:⁴

• More than 750 hours performing services in real property trades or businesses (development, construction, acquisition, rental, management, brokerage, leasing, or operations) in which you materially participate.
• More than 50% of your personal services during the year must be in those real property trades or businesses — meaning real estate must be your primary occupation.

The 750-hour and 50%-of-services tests apply at the taxpayer level. In a married couple, each spouse must independently qualify — or the one who does not work can qualify while the other has a full-time non-RE job. You must also materially participate in each rental property (or elect to group them as one activity under Treas. Reg. §1.469-9(g)).

Documentation is critical: IRS auditors scrutinize RE professional claims. Maintain contemporaneous time logs showing dates, hours, and activities for each property.

2. The Short-Term Rental Loophole

If the average rental period is 7 days or fewer, the IRS does not classify the activity as a "rental activity" under Treas. Reg. §1.469-1T(e)(3)(ii)(A). Instead, it is treated as an ordinary trade or business subject to standard passive activity material participation rules.⁵

Under those rules, if you materially participate in the STR activity — defined as more than 500 hours of participation during the year, or one of six other tests — the losses are non-passive and offset ordinary income fully. This is often referred to as the "STR loophole."

Key requirements and limitations:

• Average stay must be ≤7 days. Divide total rental days by total number of rentals. Vacation properties rented entirely via Airbnb or VRBO with 2–5 night stays typically qualify.
• You must materially participate. Using a full-service property manager typically means you don't. Self-managing, handling guest communications, coordinating cleaning, and managing maintenance likely gets you there.
• 500-hour threshold is most reliable. Other tests (e.g., "substantially all participation" or "facts and circumstances") are available but face more scrutiny.
• You do not need to be a real estate professional to use this route — it applies to any taxpayer who meets the participation test.
• NIIT interaction: Non-passive STR income is not net investment income under IRC §1411 — it escapes the 3.8% NIIT. Passive STR income (non-material-participation) is NII.

NIIT on Net Rental Income

When your rental property generates net income — not a loss — that income is subject to the 3.8% Net Investment Income Tax under IRC §1411 if your MAGI exceeds $200,000 (single) or $250,000 (married).⁶ These thresholds are not indexed for inflation.

Passive rental income is explicitly included in the definition of net investment income. For a $1M–$5M household earning $300K+ in W-2 wages, nearly all net rental income is subject to NIIT in addition to ordinary income tax. At the 24% bracket plus 3.8% NIIT, the effective rate on rental income is 27.8%.

Exception: rental income treated as non-passive — from a qualified STR with material participation or under RE professional status — is not net investment income and escapes NIIT entirely.

Year-End and Disposition Planning

Timing Cost Segregation

If you purchased a rental property after January 19, 2025, consider commissioning a cost segregation study before filing your return (or on an amended return under Rev. Proc. 2002-9 / IRC §481(a) catch-up). The resulting bonus depreciation deduction is large and front-loaded — but only useful if you can apply it, meaning you qualify as a RE professional, the STR loophole applies, or you have passive income to absorb it.

Passive Loss Release at Sale

When you sell a rental property in a fully taxable transaction, all accumulated suspended passive losses from that property are released — they can offset your capital gain, §1250 recapture, or any other income in the year of sale. This makes the disposition year particularly complex to model. A large cost segregation deduction that sat suspended for five years may suddenly offset the taxable gain at sale, substantially reducing the net tax.

1031 Exchange to Defer — Including Recapture

A like-kind exchange under IRC §1031 defers all recognized gain — including unrecaptured §1250 depreciation recapture — into the replacement property's basis. There is no dollar limit and no time restriction on deferral. But suspended passive losses associated with the relinquished property do not transfer to the replacement property in most cases — they carry over separately.

See the 1031 exchange guide and tax deferral calculator for full analysis of the 45-day / 180-day rules, boot, and Delaware Statutory Trust passive options.

1. IRC §168 — Accelerated Cost Recovery System (Cornell LII) — 27.5-year residential depreciation; 39-year commercial; cost segregation lives (5/7/15-year classes)
2. IRS Newsroom — Bonus Depreciation Guidance — 100% bonus depreciation restored permanently under OBBBA P.L. 119-21 for qualifying property placed in service after January 19, 2025
3. IRC §469 — Passive Activity Losses and Credits Limited (Cornell LII) — §469(i)(3): $25,000 allowance phases out $100K–$150K MAGI; §469(c)(7): real estate professional exception
4. IRS Publication 925 — Passive Activity and At-Risk Rules — Material participation tests; real estate professional 750-hour and 50%-of-services requirements
5. Treas. Reg. §1.469-1T(e)(3)(ii)(A) — Definition of Rental Activity (Cornell LII) — Average period of customer use ≤7 days: activity is not a rental activity; material participation applies
6. IRS — Questions and Answers on the Net Investment Income Tax (IRC §1411) — NIIT 3.8% on passive rental income; $200K/$250K thresholds; non-passive rental income excluded

Tax values verified for 2026: 27.5-year residential depreciation per IRC §168(c) (unchanged); $25K passive loss allowance phaseout $100K–$150K per IRC §469(i)(3) (not inflation-indexed, unchanged since 1986); 100% bonus depreciation per OBBBA P.L. 119-21; NIIT 3.8% per IRC §1411 (not inflation-indexed); 2026 ordinary income brackets per IRS Rev. Proc. 2025-32 + OBBBA.