Placed in Service Date Bonus Depreciation Rules 2026
The placed-in-service date, not your closing date, determines whether a rental property qualifies for the restored 100% bonus depreciation under the One Big Beautiful Bill Act (OBBBA), and getting that date wrong on a 2026 return can cost a short-term rental owner tens of thousands in first-year deductions.
- Placed in service means ready and available for rent, not the day you closed on the property.
- OBBBA restores 100% bonus depreciation for property acquired and placed in service after January 19, 2025.
- A cost segregation study typically reclassifies around 25% of a property's value into assets eligible for the 100% deduction.
- Airbnb and VRBO owners in the 37% tax bracket only capture the full write-off if the placed-in-service date lands in the correct tax year.
- Missed the right year? Form 3115 lets you catch up depreciation without amending prior returns.
Why this matters
Bonus depreciation under OBBBA runs at 100% for qualifying property, but the law ties that rate to two dates: when you acquired the property and when you placed it in service. Miss the placed-in-service window and you drop back to a lower bonus percentage or no bonus at all on the reclassified assets.
For residential rental owners running Airbnb, VRBO, or long-term rentals, this isn't academic. A cost segregation study reclassifies roughly 25% of a property's depreciable basis into 5, 7, and 15-year property. Under the restored 100% rate, all of that reclassified amount is deductible in the year the property is placed in service, not spread over decades. For an investor in the 37% bracket, a $200,000 reclassification produces a real tax reduction north of $70,000 in that single year, assuming the placed-in-service date lines up correctly.
What you'll need
- Closing or settlement statement showing the acquisition date
- Proof of when the property was ready and available to rent (listing screenshot, first booking confirmation, lease start date)
- Prior-year tax returns if the property was placed in service in an earlier year
- A CPA who files your Schedule E or Schedule C, depending on how the rental is structured
- A cost segregation study, since the reclassified assets are what actually claim the 100% rate
The steps
1. Pin down your acquisition date
Acquisition date is the day you closed, not the day you signed a purchase contract. If you signed a binding contract before January 19, 2025, and closed after, talk to your CPA about how that affects eligibility for the restored 100% rate. This step decides which side of the OBBBA line you're on before anything else matters.
2. Separate the placed-in-service date from the closing date
Placed in service means the property is ready and available for its specifically assigned use, which for a rental is the date it could accept a guest or tenant. A property that closed in November 2026 but sat vacant for repairs until February 2027 is placed in service in 2027, not 2026. This distinction is the most common source of missed deductions among short-term rental owners.
3. Confirm the property clears the OBBBA threshold
Bonus depreciation under OBBBA applies at 100% only when both the acquisition and the placed-in-service date fall after January 19, 2025. Run both dates against that line before you assume the full rate applies. A property acquired in late 2024 but placed in service in 2026 needs a closer look with your CPA before you count on 100%.
4. Time the cost segregation study to the placed-in-service year
The study should be dated to the tax year the property was actually placed in service, not the year you ordered it. A flat-fee study runs $2,200 and typically takes 3-5 business days to deliver, which leaves plenty of room to get it done before your filing deadline once the placed-in-service date is settled.
5. Reclassify assets and apply the 100% rate
Once the engineering-based study breaks out the roughly 25% of value that qualifies as 5, 7, or 15-year property, that entire amount depreciates at 100% in the placed-in-service year. This is where the deduction actually lands on your return, and it's the step most DIY approaches get wrong because they guess at percentages instead of running an engineering-based breakout.
6. Document the placed-in-service evidence
Keep the listing activation date, first booking confirmation, or lease start date in your records alongside the study. Examiners reviewing a cost segregation study look for this evidence first, and a 100+ page audit-defensible report is only as strong as the placed-in-service proof backing it up.
7. File with the correct year on Form 4562
Your CPA reports the reclassified assets and the bonus depreciation election on Form 4562 for the placed-in-service year, not the acquisition year if the two differ. Filing under the wrong year is a common trigger for amended returns.
8. Handle multiple properties with different placed-in-service dates separately
Each property in a portfolio has its own placed-in-service date, even if you acquired several in the same closing. Track them individually. A build-to-rent portfolio or a multi-unit purchase closed on one date can still have units placed in service months apart if renovations finish on different schedules.
Confirm your placed-in-service timing
Get a free savings estimate before you file your 2026 return.
Troubleshooting
- Property acquired before the cutoff, placed in service after — the acquisition date, not the placed-in-service date, controls eligibility for the restored 100% rate. Check the written binding contract date with your CPA before assuming the full rate applies.
- Renovation delayed the placed-in-service date into the next year — this pushes your entire bonus depreciation claim into that later tax year. Don't claim the deduction on the year you closed if the unit wasn't rentable yet.
- STR is listed but has zero bookings — a property can be placed in service the moment it's available and marketed for rent, even before the first guest books. Keep the listing activation date as your proof.
- You already filed without claiming full bonus depreciation — Form 3115 lets you catch up missed depreciation as an automatic accounting method change, without amending every prior-year return.
- Closing date and placed-in-service date got mixed up on last year's return — this is fixable, but talk to your CPA about whether an amended return or a Form 3115 catch-up is the cleaner path for your situation.
Tools and resources
- Your closing statement and listing platform's activation date export
- A CPA experienced in Schedule E or Schedule C rental filings
- A cost segregation study built for Airbnb and short-term rentals, engineering-based and audit-defensible
- IRS Form 4562 instructions for the tax year you're filing
- Form 3115 instructions if you need to catch up a prior year
What to do next
If you're closing on a property with construction or renovation still in progress, the placed-in-service date won't land until the work is done and the unit is rentable. Review how that timing interacts with a new build before you assume a 2026 closing means a 2026 deduction.
FAQ
What is the placed in service date for bonus depreciation?
The placed-in-service date is the day a rental property is ready and available for its intended use, such as when a listing goes live or a tenant can move in, not the day you closed on the purchase. Bonus depreciation rate rules under OBBBA apply based on this date, not the closing date.
Does the 100% bonus depreciation apply in 2026?
Yes, 100% bonus depreciation applies to residential rental property acquired and placed in service after January 19, 2025 under the One Big Beautiful Bill Act, which covers properties placed in service throughout 2026.
Can I claim bonus depreciation if I closed in 2025 but the property wasn't rentable until 2026?
You claim the deduction in the year the property was actually placed in service, which in this case is 2026, not the year you closed. The acquisition date still needs to clear the January 19, 2025 threshold separately.
How much does a cost segregation study cost?
A flat-fee, engineering-based cost segregation study for a residential rental runs $2,200 and typically delivers in 3-5 business days. The report is a supplementary audit-defensible document your CPA uses when filing, not a filing itself.
What percentage of a property does cost segregation reclassify?
A typical cost segregation study reclassifies around 25% of a property's depreciable value into 5, 7, and 15-year property. That reclassified portion is what qualifies for the 100% bonus depreciation rate.
What happens if I missed claiming bonus depreciation in a prior year?
Form 3115 lets you catch up missed depreciation as an automatic accounting method change, applying the full correction in the current tax year without amending every prior return.
Is the placed in service date the same for every unit in a multi-property purchase?
No, each unit or property can have its own placed-in-service date even if you closed on all of them the same day. Renovation timelines and rental readiness determine the date unit by unit.
Does a short-term rental need a guest booking to be placed in service?
No, a short-term rental is placed in service once it's ready and actively listed for rent, even before the first guest books. Keep the listing activation date as documentation.
One last thing
Most owners assume the acquisition date and the placed-in-service date are the same day. On a renovation or new construction project, they're often months apart, and that gap is exactly where a 2026 bonus depreciation claim gets pushed into 2027 or lost for the year entirely. Confirm the actual rentable date before your CPA files, not after.