Real estate investors have tax levers that stock investors do not: depreciation on property they still own, cost segregation to front-load that depreciation, and real estate professional status to use rental losses against W-2 income. Short-term rentals and 1031 exchanges round out the playbook. This guide covers how each one works.

Why is depreciation the investor's biggest paper loss?

When you own a rental, the IRS lets you deduct a portion of the building's cost each year even while the property is usually appreciating in market value. That is the paper loss: a deduction with no cash leaving your account. Under MACRS, residential rental property depreciates over 27.5 years and nonresidential real property over 39 years, both straight-line. Land never depreciates, so every depreciation plan starts by separating land value from building value. (IRS Publication 946)

This is why depreciation-first planning matters more than most investors expect. Rent minus expenses gives you cash flow. Rent minus expenses minus depreciation gives you taxable income. Those two numbers are different on purpose, and the gap between them is the tax advantage of owning real estate.

How does cost segregation accelerate depreciation?

A cost segregation study reclassifies parts of a building, things like carpeting, decorative fixtures, certain electrical systems, landscaping, and parking areas, into 5-, 7-, or 15-year property instead of leaving everything in the 27.5- or 39-year bucket. The IRS's own audit guidance treats this component-by-component breakdown as the standard way to assign the correct recovery period to each part of a property. (IRS Audit Techniques Guides)

The reclassification matters because of bonus depreciation. Property with a recovery period of 20 years or less qualifies, and the One Big Beautiful Bill Act restored a permanent 100% first-year deduction for qualifying property acquired after January 19, 2025. (IRS Notice 2026-11; IRS news release IR-2026-06)

In plain terms: the study moves dollars into the short-life bucket, and bonus depreciation lets you deduct those dollars in year one instead of over 5, 7, or 15 years. One boundary to watch: the trigger is the acquisition date, not the placed-in-service date. Property acquired on or before January 19, 2025 stayed on the old 40% phase-down rate, even if it went into service later in 2025. Property acquired after January 19, 2025 gets the full 100%.

One more boundary: bonus depreciation is a federal rule, and states do not all follow it. California, for example, does not conform to IRC Section 168(k), so there the year-one write-off can be federal-only, with the state return spreading the deduction over the asset's life instead. (FTB Form 3885P instructions) Check your state's conformity before counting the full benefit.

Already own the property? You are not stuck. A look-back study plus a single accounting method change captures the missed depreciation in the current year, with no amended returns. One nuance: the catch-up uses the bonus rate in effect for the year the property went into service, so a 2023 building catches up at 80%, not 100%. We cover that in detail in our companion article on doing cost segregation on a property you already own.

What is real estate professional status and who qualifies?

By default, every rental activity is passive under IRC Section 469. Passive losses can only offset passive income, never your salary. Real estate professional status is the statutory exception in section 469(c)(7). It is not a license or a credential. It is a tax position you qualify for fresh each year by meeting two tests:

1. More than half of the personal services you perform in all trades or businesses during the year are performed in real property trades or businesses in which you materially participate.

2. You perform more than 750 hours of services in those real property trades or businesses.

On a joint return, one spouse must meet both tests individually. Hours do not combine. This is where full-time W-2 earners usually lose: 750 hours is reachable, but the "more than half of all working time" test loses to a 2,000-hour job. In a two-earner household, the standard planning answer is that one spouse qualifies or nobody does. (IRS Publication 925)

One clarification most articles skip: qualifying as a real estate professional does not make your losses automatically deductible. It removes the automatic passive label. You still must materially participate in each rental activity, or in a validly grouped set of rentals, under one of the seven IRS tests. REPS gets you through the first gate. Material participation gets you through the second.

How does material participation work for rentals?

The IRS offers seven alternative tests, and meeting any one of them for the activity counts as material participation. The two rental investors use most:

• The 500-hour test. You participate more than 500 hours in the activity during the year.

• The 100-hour test. You participate more than 100 hours, and no other individual (including your property manager and cleaners) spends more time than you.

Because each rental is a separate activity by default, most real estate professionals make the election to group all rental interests as one activity. One material participation test then covers the whole portfolio. Document hours contemporaneously: a calendar or log kept as you go survives an audit. Reconstructions written after the notice arrives routinely do not. (IRS Publication 925)

What is the short-term rental exception?

If the average guest stay at a property is seven days or less, the activity is not a "rental activity" under the regulations at all (26 CFR 1.469-1T(e)(3)(ii)(A)). The same carve-out covers average stays of 30 days or less when you provide significant personal services, such as daily cleaning and concierge-style guest support (1.469-1T(e)(3)(ii)(B)). That removes the automatic passive treatment with no need for real estate professional status. This is the well-known short-term rental exception.

Do not miss the catch: the seven-day test only removes the passive label. You still must be carrying on a trade or business, and you still must materially participate, before the losses offset your active income. The 100-hour test is the one most STR owners use, and the "more than anyone else" comparison includes the cleaner and the property manager, whose hours on a short-stay property routinely exceed the owner's. That single fact is the most common reason this strategy looks open and is not. Keep a real log, and count everyone's hours, not just yours. One advantage here: a short-term rental that clears the carve-out above is a trade-or-business activity, so all seven material participation tests are open to you, including the significant participation test.

How do 1031 exchanges fit the playbook?

A 1031 exchange defers capital gains tax when you sell investment real property and reinvest the proceeds in like-kind real property. Since 2018, like-kind means real property only. The mechanics are strict: 45 days from closing to identify replacement properties in writing, 180 days (or the due date of your extended return, whichever is earlier) to close, and a qualified intermediary must hold the proceeds. You never touch the cash.

Two things investors miss. First, depreciation recapture still waits. The depreciation you claimed reduced your basis, so the exchange defers the recapture instead of erasing it, with one important exception for cost-segregated property. Components reclassified as section 1245 property only defer their recapture to the extent the replacement property contains matching 1245 value. If it contains less, the shortfall comes back as ordinary income in the year of the exchange. When you eventually sell without exchanging, the straight-line depreciation comes back as unrecaptured section 1250 gain taxed at up to 25%, and cost-segregated personal property can be recaptured as ordinary income. Second, the exchange only works for property held for investment or business use. Flip inventory and personal-use property do not qualify.

What losses can you actually use each year?

Deducting a rental loss means surviving a stack of limits, applied in order:

1. At-risk rules. You cannot deduct more than you have at risk: cash invested plus recourse debt and qualified nonrecourse financing.

2. Passive activity rules. Without real estate professional status or the short-term rental exception, rental losses wait for rental income or a sale.

3. Excess business loss limit. For noncorporate taxpayers, business losses above the annual threshold get deferred and carried forward as a net operating loss. For 2025 the threshold is $313,000 ($626,000 for joint filers). For 2026 it resets to $256,000 ($512,000 joint), and the One Big Beautiful Bill Act made the limit permanent. (CRS analysis of the OBBBA tax provisions)

There is also a smaller relief valve: if you actively participate in a rental, a lower bar than material participation, you can deduct up to $25,000 of rental losses against other income. That allowance phases out between $100,000 and $150,000 of modified adjusted gross income, so it phases out fast for high earners.

Which strategy fits your situation?

Pending review by Brian Thomas, EA. Updated September 25, 2026.

This article is free educational content, not tax advice for your specific situation. If you want a plan built around your actual numbers, that is what our paid tax planning engagements do.