Bonus depreciation for your 2026 short-term rental tax return unlocks on the day the property is placed in service — not the day you close. To count for 2026, the property must be owned, habitable, furnished, permitted where required, utilities on, and actively bookable on a live listing with an open December calendar by December 31, 2026. A first paying guest is not required. If you miss the date, 100% bonus depreciation isn't going anywhere under the One Big Beautiful Bill Act — the deduction just lands on your 2027 return instead of your 2026 one.
As of today there are 99 days left in 2026. If you're buying or finishing a short-term rental this fall, the deadline that matters for this year's tax return isn't your closing date — it's the day the property is placed in service. Miss it by a week and the Year-1 write-off you were counting on moves to your 2027 return.
Here's what's at stake, what "placed in service" actually requires, and how to work backwards from December 31 so nothing slips.
Placed in service = ready and available for its specific use. For a short-term rental that means: owned, habitable, furnished and equipped, utilities on, permits and tax registrations in hand, and a live listing with an open calendar and market-rate pricing. First booking optional. Miss December 31 and the deduction moves to 2027 — still 100%, just a year later.
What's on the table
The One Big Beautiful Bill Act (P.L. 119-21) permanently restored 100% bonus depreciation for qualifying property acquired after January 19, 2025. For a short-term rental, that means every component with a recovery period of 20 years or less can be deducted in full in the year the property goes into service. Those components are identified through cost segregation: the 5-year personal property (furniture, appliances, certain finishes and fixtures), 7-year property, and 15-year land improvements (driveways, landscaping, fencing, outdoor living areas). The building itself, on a 27.5- or 39-year schedule, never qualifies.
That share is bigger than most people expect. Across the 197 markets in DepreciMax's 2026 short-term rental study, the weighted national average bonus-eligible share of a short-term rental's purchase price was about 19.9%, and the strongest markets ran well above that. In Lake Cumberland, KY — the #1-ranked market — the median bonus-eligible share was 27.1%, producing an $89,416 median Year-1 deduction on a median list price of $329,950.
Whether that deduction offsets your W-2 or business income depends on the short-term rental rules under IRC §469(c)(7). The average guest stay needs to be 7 days or less, and you need to materially participate. The most common tests are 500+ hours in the activity, or 100+ hours and more than anyone else — including your cleaners and co-host. If you meet both, the losses are nonpassive. If you don't, they're passive and carry forward. Still valuable, just not this year.
Not sure what your property's Year-1 write-off could look like?
Run any address — one you own or one you're evaluating — through a DepreciMax Property Report and see the itemized IRS-category breakdown, land split, and Year-1 write-off estimate.
Run a Property Report — $99 →What "placed in service" actually means
The IRS standard, from Treas. Reg. §1.167(a)-11(e)(1)(i), is that a property is placed in service when it is "in a condition or state of readiness and availability for a specifically assigned function." For a short-term rental, the specifically assigned function is renting to guests. Closing on the property doesn't meet that standard, and neither does owning an empty house you plan to furnish in January.
In practice, all of these should be true by December 31:
Year-end placed-in-service checklist
- You own it. The purchase has closed and title is yours.
- It's habitable and complete. Any renovation that affects whether guests can stay is done. A kitchen still being gutted in late December is a problem.
- It's furnished and equipped. Beds made, kitchen stocked, linens, toiletries, Wi-Fi live. A guest could check in tomorrow.
- Utilities are on. Power, water, heat, and internet active in your name or your manager's.
- Permits and registrations are in hand. Many markets require a short-term rental permit, a lodging or occupancy tax registration, or an inspection before you can legally rent. Some jurisdictions take 30 to 90 days — check yours first.
- It's listed and bookable. An active listing on Airbnb, VRBO, or a direct-booking site, with photos, an open calendar, and market-rate pricing. A "coming soon" listing or a calendar blocked through January weakens your position.
This is where most year-end timelines break. A property you can't legally rent is hard to argue is available for rent. If your market requires a short-term rental permit and the timeline is 60 days, applying on November 15 doesn't get you there. Pull the permit application this week.
You don't technically need a booking before year-end. "Available for rent" is the standard, not "rented." That said, a real first stay is the strongest evidence you can have — and it helps establish the average-guest-stay you'll need for the §469(c)(7) short-term rental exception.
Document it as it happens
If your 2026 return is ever questioned, you'll want dated proof. Keep:
- Photos of the finished, furnished property, with EXIF dates intact
- Permit and tax registration approval dates (screenshots or PDFs)
- Screenshots of the live listing and open calendar
- Your first booking confirmation
- A running log of your hours, starting now
On hours, a word of caution. Time spent before the property is in service — shopping for furniture, sitting with contractors, hauling deliveries — may not count toward material participation under IRC §469. Many advisors treat those hours as startup activity. If you go live in December, you have very little of 2026 left to build participation hours. Talk to your CPA about how that affects which year the losses actually help you.
Working backwards from December 31
If you're under contract or just closed, map the calendar in reverse:
- Permits: find your market's timeline this week and apply the moment you're eligible.
- Furnishing: allow two to four weeks, longer if you're ordering upholstered pieces ahead of the holidays.
- Photos and listing: schedule the shoot as soon as the place is staged. A listing takes days to set up, not hours.
- Buffer: closings, deliveries, and county offices all slow down in late December. Aim to be live by mid-December, not the 31st.
You don't need the cost segregation study by December 31
The deadline is for placing the property in service. The cost segregation study that identifies the bonus-eligible components can be done after year-end, before you file. A cheaper planning estimate now can tell you whether a formal engineered study is worth commissioning at all — the shortlist of paid options runs from around $495 for self-serve software up through $15,000+ engineered studies (see our cost segregation software guide for short-term rentals).
And if you do miss the date, 100% bonus depreciation isn't going anywhere. The deduction just lands on your 2027 return instead of your 2026 one. For some households that's fine. For others — especially a strong 2026 income year — the timing is worth a push.
Some states don't follow federal bonus depreciation. California, New York, and North Carolina are among those that decouple, so your state return may add some or all of the federal deduction back. Full-conformity states let it flow through. Confirm with your state's Department of Revenue and your CPA.
Size the Year-1 write-off before the year ends
Frequently asked questions
What does "placed in service" actually mean for a short-term rental?
A short-term rental is placed in service on the date it is ready and available for its specific use — renting to guests. The IRS standard sits in Treas. Reg. §1.167(a)-11(e)(1)(i). In practice this means the property is owned, habitable, furnished and equipped, utilities are on, required permits and tax registrations are in hand, and the listing is live on Airbnb, VRBO, or a direct-booking site with an open calendar and market-rate pricing. A first paying guest is not required — "available for rent" is the standard, not "rented."
Do I have to be booked by December 31 to claim 2026 bonus depreciation?
No. The standard is available for rent, not rented. A live, bookable listing with an open December calendar and market-rate pricing satisfies the placed-in-service test even if you don't take a paying guest until January. A real first stay is still the strongest evidence you can have and helps establish the average-guest-stay under IRC §469(c)(7) — but it isn't legally required to place the property in service.
How much is short-term rental bonus depreciation actually worth in 2026?
It depends on the property. Across the 197 markets in DepreciMax's 2026 short-term rental study, the weighted national average bonus-eligible share of purchase price is about 19.9% — roughly a fifth of the price deductible in Year 1. Top markets run higher: Lake Cumberland, KY (the #1-ranked market) shows a 27.1% median bonus-eligible share and an $89,416 median Year-1 write-off on a median list price of $329,950.
What happens if I miss the December 31, 2026 deadline?
The deduction moves to your 2027 return. 100% bonus depreciation is permanent under the One Big Beautiful Bill Act (P.L. 119-21) for qualified property acquired and placed in service after January 19, 2025 — there is no phase-down and no sunset. Missing December 31 costs you a year of timing, not the deduction itself. For a strong 2026 income year, that timing can matter; for others it's fine to land on the 2027 return.
Do I need the cost segregation study done by December 31?
No. The December 31 deadline is for placing the property in service. The cost segregation study that identifies the 5-year, 15-year, and 39-year components can be completed after year-end, before you file your 2026 return. A cheaper planning-grade estimate before year-end is a reasonable way to size whether a formal engineered study is worth commissioning at all.
Do my hours before the property is in service count toward material participation?
Often no — many advisors treat pre-service hours (shopping for furniture, meeting with contractors, setting up utilities) as startup activity that does not count toward the 100-hour or 500-hour material participation tests under IRC §469. If you go live in December, you have very little of 2026 left to build participation hours. Confirm with your CPA how the timing affects whether the losses are nonpassive on your 2026 return.
Which states don't follow federal bonus depreciation?
Roughly a dozen states decouple from IRC §168(k) — meaning their state returns add back some or all of the federal bonus depreciation. California, New York, and North Carolina are among the fully-decoupled states. Full-conformity states let the federal deduction flow through to the state return. Partial-conformity states apply their own bonus depreciation percentage. Check your state's Department of Revenue for its current §168(k) conformity position.
See what your property's Year-1 write-off could look like
Run a specific address — one you own or one you're evaluating — through DepreciMax and see the itemized IRS-category breakdown, analyzed listing photos, county assessor land split, and 197-market benchmarking. Illustrative estimate, closely calibrated to a formal cost segregation study. Confirm with your CPA.
Run a Property Report — $99 →Federal authority: IRC §168(k), as amended by the One Big Beautiful Bill Act (P.L. 119-21) restoring 100% bonus depreciation for property acquired and placed in service after January 19, 2025. Placed-in-service standard: Treas. Reg. §1.167(a)-11(e)(1)(i). Short-term rental material-participation exception: IRC §469(c)(7) and Treas. Reg. §1.469-1T(e)(3)(ii). IRS Notice 2026-11 (interim guidance): irs.gov/pub/irs-drop/n-26-11.pdf. State conformity positions vary; confirm with each state's Department of Revenue. Market-level medians cited from the DepreciMax 2026 Short-Term Rental Bonus Depreciation Study (197 US markets). Nothing in this article is tax advice. Consult a qualified CPA who specializes in real estate before making investment or filing decisions based on cost segregation projections.