Bonus Depreciation for Real Estate Investors: 100% Write-Off Rules in 2026

The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, permanently restored 100% bonus depreciation — no phase-down, no sunset, no expiration. For real estate investors, this is one of the most significant tax law changes of the decade. A $1.2M rental property with a cost segregation study can generate $270,000 or more in Year-1 depreciation deductions — compared to $39,000 under straight-line alone. The catch: the building structure itself still doesn't qualify. The savings come from identifying the short-lived components buried inside your acquisition, and from knowing how to unlock the resulting losses against ordinary income.

What the OBBBA changed — and what the rules were before

Under the Tax Cuts and Jobs Act (2017), bonus depreciation was set at 100% through 2022, then phased down: 80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, and 0% thereafter. For investors who bought property in 2023 or 2024, the phase-down already cost them tens of thousands in accelerated deductions they would have gotten under the pre-2023 rules.

The OBBBA reversed all of that. Under the new law (IRC § 168(k) as amended), 100% bonus depreciation is permanently restored for qualifying property acquired and placed in service after January 19, 2025.¹ There is no sunset provision. Congress wrote it as permanent law.

What qualifies for bonus depreciation in real estate

Bonus depreciation under § 168(k) applies to tangible MACRS property with a recovery period of 20 years or less, and to qualified improvement property (QIP). It explicitly does not apply to the building structure itself — residential structures are 27.5-year property and commercial structures are 39-year property, both of which exceed the 20-year cutoff.

What this means in practice: bonus depreciation applies to the non-structural components of a real property acquisition. A cost segregation study is the mechanism that identifies these components and segregates them from the building into their correct MACRS categories:

In a typical residential rental, a cost segregation study reclassifies 15–30% of the depreciable basis into 5/7/15-year property. Commercial properties and short-term rentals often see higher percentages — 25–40% — because they have more personal property and land improvements relative to their building value.

Bonus depreciation vs. § 179 expensing: why they're different for real estate

Real estate investors frequently confuse bonus depreciation with § 179 expensing. They operate similarly on the surface — both allow immediate write-offs instead of multi-year depreciation — but a critical distinction applies to residential rental property:

Section 179 cannot be used for residential rental property. IRC § 179(d)(2) prohibits § 179 expensing for property used in connection with the furnishing of lodging (referring to residential rental properties). Appliances, carpets, and fixtures inside a residential rental unit do not qualify for § 179 — even though they would normally be 5-year personal property.²

Bonus depreciation has no such restriction. Section 168(k) applies to any qualifying MACRS property, regardless of whether it's inside a residential rental. A carpet in a single-family rental generates the same 100% first-year deduction as a carpet in a hotel lobby, for bonus depreciation purposes.

For commercial property investors, § 179 and bonus depreciation can be used together for QIP and other qualifying improvements, with § 179 usually applied first (subject to its income limitation) and bonus depreciation applied to any remaining basis. For residential rental investors, bonus depreciation is the primary acceleration tool — § 179 isn't an option for the personal property components.

Worked example: $1.2M rental acquisition

Here's what the numbers look like on a typical single-family rental acquisition with a cost segregation study:

The Year-1 without cost seg = $1,080,000 ÷ 27.5 = $39,273 (full-year, simplified). With cost seg: $270,000 × 100% + $810,000 ÷ 27.5 = $270,000 + $29,455 = $299,455.

At a 37% marginal rate, the additional $254,000 in Year-1 deductions represents ~$94,000 in federal tax deferred. At 32%, it's ~$81,000. The cost segregation study paying ~$6,000 to capture that benefit is a straightforward ROI. Even at lower income — say a 24% effective rate — you're deferring ~$61,000 in federal tax into future years when your income might be lower.

The passive activity loss problem

Here's where many investors discover that bonus depreciation doesn't automatically save them $94,000 in Year-1 taxes. The accelerated deductions create a rental loss — but under IRC § 469, rental activities are passive per se for most investors. A passive loss can only offset passive income. It cannot offset W-2 wages, 1099 income, or portfolio income (dividends, interest).

For an investor earning $200,000 in W-2 income and no other passive income, that $254,000 bonus-dep loss simply suspends and carries forward until:

• The investor generates passive income (from this or other passive activities)
• The investor disposes of the rental property in a fully taxable transaction (§ 469(g) releases all suspended losses)
• The investor qualifies as a Real Estate Professional (REPS) and materially participates in rental activities
• The investor's average rental stay is ≤7 days (STR loophole), converting the activity to non-passive

There is a partial exception: under § 469(i), investors with MAGI below $100,000 can deduct up to $25,000 of passive rental losses against ordinary income. This allowance phases out entirely at $150,000 MAGI. At $200,000+ income — where bonus depreciation creates the most tax savings — the phase-out eliminates the $25K allowance completely.

Unlock path 1: Real Estate Professional Status (REPS)

REPS is the most powerful unlock for bonus depreciation losses. Under IRC § 469(c)(7), a taxpayer qualifies as a real estate professional if:

1. More than 750 hours per year are spent in real property trades or businesses in which the taxpayer materially participates, and
2. More than half of all personal services in all trades or businesses are performed in real property trades or businesses

When REPS is achieved and the investor makes a grouping election under Reg. § 1.469-4 to treat all rental activities as a single activity, rental losses are reclassified as non-passive. The bonus depreciation loss flows directly to Form 8582 as a non-passive deduction, offsetting W-2 and other ordinary income dollar-for-dollar.

The math is dramatic. A REPS investor who buys a $1.2M rental in 2026 with a cost segregation study generates ~$254,000 in Year-1 losses (net of study fee). At a 37% rate, that's $94,000 in Year-1 federal tax saved — real cash in the current year, not a deferral. Investors with spouses who work in real estate full-time often structure the REPS qualification through the spouse (one spouse's hours + one spouse's rental activity can combine under Reg. § 1.469-9(c)(4)(i)).

See the REPS complete guide and REPS qualification calculator for the full two-part test and tax savings analysis.

Unlock path 2: the short-term rental loophole

For short-term rentals (Airbnb, VRBO) where the average rental period is 7 days or less, the activity is not classified as a rental activity under Treas. Reg. § 1.469-1T(e)(3)(ii)(A). This removes it from the passive-per-se rule for rentals. If you materially participate in the STR activity using any of the seven material participation tests, the income and losses are non-passive.

The STR loophole does not require 750 hours or a majority-of-services test. Material participation via the 500-hour test (Temp. Reg. § 1.469-5T(a)(1)) or the "substantially all" test (§ 1.469-5T(a)(2)) is sufficient. For many hands-on Airbnb operators, this is achievable without changing their primary occupation.

An STR property with a cost segregation study can see especially high bonus depreciation percentages — short-term rental furnishings (beds, linens, kitchen equipment, electronics) are typically 5-year property, and high-end STR properties with significant outdoor amenities see large 15-year land improvement components. It's not uncommon for STR cost segregation studies to identify 35–50% of the depreciable basis as short-lived property.

See the short-term rental tax guide for the full STR loophole analysis including NIIT interaction.

The §1245 recapture trap on sale

When you eventually sell a property on which you've taken bonus depreciation, the IRS recaptures it. Under IRC § 1245, all depreciation taken on personal property (the 5-year and 7-year components from your cost seg) is recaptured at ordinary income rates — up to 37% in 2026 — rather than the more favorable 0/15/20% long-term capital gains rates or the 25% max on § 1250 unrecaptured gain.

Here's what that means for our $1.2M example, assuming a 5-year hold and sale at $1,400,000:

• §1245 recapture (5-yr + 7-yr = $162,000 taken at 100% in Year 1): $162,000 taxed at up to 37% = $59,940
• §1250 unrecaptured gain (27.5-yr SL depreciation taken): $29,455 × 5 = ~$147,275, taxed at max 25% = $36,819
• LTCG on appreciation: $200,000 gain minus recapture amounts, at 15–20% + 3.8% NIIT

This is the four-layer tax stack on a real estate sale. Bonus depreciation doesn't increase the total tax you pay over the life of the investment — it accelerates deductions now and defers the recapture tax to the future. But investors who plan to sell within 2–3 years should model whether the time-value benefit of early deductions outweighs the recapture concentration in a near-term sale year.

Common mitigation strategies:

• 1031 exchange: A qualifying exchange defers all recapture — § 1245 and § 1250 gain carry into the replacement property's basis. No current-year tax on the sale. See the 1031 exchange guide.
• Hold to death: IRC § 1014 steps up basis to FMV at death, permanently erasing all accumulated § 1245 and § 1250 recapture gain. The 1031-cascade-until-death strategy is the most powerful exit for investors who don't need liquidity. See the stepped-up basis guide.
• Installment sale: Under IRC § 453(i), § 1245 recapture is front-loaded into the year of sale (not spreadable over the installment term), so it doesn't fully eliminate the recapture hit — but it can help manage the LTCG and § 1250 layers over multiple years. See the installment sale guide.
• PAL offset: If you have large suspended passive losses from other properties, a fully taxable sale releases them under § 469(g). The PAL release can offset the recapture gain, netting to a small or zero tax bill.

When NOT to take bonus depreciation

More depreciation is not always better. Consider skipping or deferring bonus depreciation in these situations:

• Short planned hold (less than 2 years): You'll take 100% of the cost seg components in Year 1, then sell and pay § 1245 recapture in Year 2. The time-value benefit of a 1-year deferral is modest. Model whether a 1031 exit is available before deciding.
• Passive investor with no unlock path: If you're a W-2 employee at $300,000 with no REPS plan and no STR involvement, the losses will suspend indefinitely. They're still valuable — they'll release on disposition or when you eventually generate passive income — but they don't create immediate savings. The cost of the cost segregation study may not be worth it if you expect to hold for 20+ years with no passive income offset.
• Low bracket year: If you're taking bonus dep in a year when your income happens to be low (sabbatical, business loss, major deductions), the deductions may only offset income at 22–24% rather than 37%. Consider whether delaying would let you use them against higher-bracket income in a later year (this requires careful planning around the accounting method election).
• State tax considerations: Several states decouple from federal bonus depreciation — most notably California, which never conformed to § 168(k) bonus dep. A California investor may face a federal deduction with no state benefit and potentially a state addition to income. Check your specific state's conformity before planning around bonus dep savings at the state level.

Multi-property compounding

The real power of bonus depreciation for active real estate investors is compounding across acquisitions. Every property acquired and placed in service after January 19, 2025, is eligible in its Year 1. A BRRRR investor buying 3 properties per year at $400,000 each, with cost segregation identifying 25% = $100,000 per property in 5/7/15-yr components, generates $300,000 in bonus depreciation losses annually — indefinitely, as long as they keep buying. Combined with REPS, that's potentially $111,000+ per year in federal tax savings on each year's acquisitions.

Investors doing commercial value-add deals often see even higher percentages. A $3M apartment complex with a comprehensive cost seg study might identify 30% = $900,000 in bonus-eligible components — generating $333,000 in Year-1 ordinary deductions for a REPS investor.

See the cost segregation guide and cost segregation ROI calculator to model the benefit on a specific acquisition.

Documentation and compliance requirements

To properly claim bonus depreciation on segregated property, you need:

• A cost segregation study from a qualified engineer (ASCE, ASCSP, or similar credential). IRS audits of cost segregation positions focus on the methodology — whether the engineer actually identified and measured the components versus applying generic percentages. A properly documented study withstands audit.
• Form 4562 (Depreciation and Amortization): list each bonus-dep asset by property class with its depreciable basis. Attach to your Form 1040 Schedule E or your partnership/S-corp return.
• Opt-out election: If you want to not take bonus depreciation on a class of property (unusual but sometimes warranted), you must make a timely election out on Form 4562. The default is to take it.
• Separate asset tracking: Each cost-segregated component becomes a separate depreciable asset on your books. When you sell the property, you'll need these records to compute § 1245 recapture accurately by asset.

How a specialist advisor coordinates the full strategy

Bonus depreciation doesn't exist in isolation. The full planning sequence for a real estate investor acquiring a significant property in 2026 involves:

1. Commissioning a cost segregation study before or shortly after closing (some firms do preliminary estimates pre-closing)
2. Evaluating REPS qualification before year-end — if you're close to the 750-hour threshold, logging additional hours before December 31 is easier than not
3. Modeling the PAL situation: how much of the bonus dep loss can be used this year vs. suspending?
4. Coordinating with Roth conversion planning: bonus dep losses can lower AGI, creating room to convert a traditional IRA to Roth at a lower rate in the same year
5. Planning the exit strategy: 1031 cascade vs. sell-and-rebalance vs. hold-to-death, accounting for accumulated § 1245 recapture in the basis of each property

A generalist advisor may know that cost segregation exists. An advisor who specializes in real estate investor planning runs this as a multi-variable model — because the bonus depreciation decision affects your IRMAA brackets, your Social Security taxation, your NIIT exposure, and your estate plan simultaneously.

Sources

1. IRS — Treasury and IRS guidance on bonus depreciation under the One Big Beautiful Bill Act: confirms permanent 100% rate under amended § 168(k) for property acquired and placed in service after January 19, 2025; addresses transitional rules for property acquired on or before that date. See also IRS Notice 2026-11.
2. IRC § 179 — Cornell Law: § 179(d)(2) disallows expensing for property used to furnish lodging or in connection with the furnishing of lodging under § 168(b)(2)(A); § 168(k) bonus depreciation carries no equivalent residential rental restriction.
3. IRS Publication 946 — How to Depreciate Property (2026): MACRS recovery period tables (Table B-1, B-2), bonus depreciation rules, asset class definitions for 5/7/15-year property, mid-quarter and mid-month conventions.
4. IRC § 168(k) — Cornell Law: additional first year depreciation deduction (bonus depreciation); qualified property definition; property with recovery period ≤ 20 years and QIP eligible; excludes § 168(e)(2) residential rental property structure (27.5 yr) and nonresidential real property (39 yr) by operation of the 20-year rule.
5. IRC § 1245 — Cornell Law: recapture of depreciation on personal property as ordinary income upon disposition; applies to all depreciation deducted including bonus depreciation on 5/7/15-year cost-seg components.

Tax values and rules verified as of May 2026 against IRS.gov, Cornell LII, and BDO/RSM published OBBBA analysis. OBBBA enacted July 4, 2025 (P.L. 119-21). Transitional rule: property acquired on or before January 19, 2025 subject to prior-law phase-down rates. State tax conformity varies — verify your state's bonus depreciation conformity before planning. See also: cost segregation guide, REPS guide, short-term rental tax guide, depreciation recapture guide, passive activity loss guide.