If you own an Airbnb, VRBO, or any short-term rental, you could be leaving thousands on the table every year. Here's how cost segregation changes that.
$30K+*
Avg. Year 1 Tax Savings
100%
Bonus Depreciation (2025+)
10 min
To Complete Online
* Illustrative for a $500K STR with 25% basis reclassified at a 37% combined federal+state rate, 100% OBBBA bonus on 5/15-year property. Actual results vary by property, basis, acquisition date, material participation status, and tax situation. Not tax advice.
Normally, rental property losses are passive — they can only offset other rental income, not your W-2 salary or business income.
The STR loophole changes that. If your average guest stay is 7 days or less AND you materially participate, your rental is reclassified as active (nonpassive). Depreciation losses can then offset your regular income — wages, business income, even investment income — if you meet both qualification tests below.
Combine this with a cost segregation study to accelerate tens of thousands of dollars of depreciation into Year 1 — usable against active income if you qualify under §469.
Gate 1
7-day average rental
Average guest stay across the year is 7 days or less. Most Airbnb/VRBO hosts meet this automatically.
Gate 2
Material participation
You meet at least ONE of the 7 IRS material-participation tests (most STR hosts use the 100-hour test below) — with contemporaneous records.
Both gates required — either alone is not sufficient
You must satisfy BOTH requirements above — either one alone is not sufficient. Details on each:
1. Average guest stay is 7 days or less
If you're on Airbnb or VRBO, you almost certainly meet this.
2. You materially participate (meet ANY one of these IRS tests):
The test most STR hosts use
100+ hours AND more than any other individual
(Test 3 under IRC §469 — the practical path for most hosts)
You must personally work more than 100 hours per year on the property, AND no other single person — including cleaners, co-hosts, and property managers — can work more hours than you.
What counts as your hours:
Watch out: Property manager trap
If you use a full-service property manager (e.g., Vacasa, Evolve, or a local management company), their hours typically exceed 200+ per listing per year. That means YOU need more than 200 hours to qualify under this test — which is much harder. Self-managed hosts who hire only per-turnover cleaners have the easiest path.
Other ways to qualify
Important: Document your participation hours with contemporaneous records (calendars, activity logs, booking platform records). The IRS has disallowed claims based on undocumented hour estimates.
The IRS recognizes 7 material participation tests under Reg §1.469-5T. The 5 shown above are most relevant to STR hosts. Your CPA can evaluate all 7 for your specific situation.
The One Big Beautiful Bill Act (OBBBA) restored 100% bonus depreciation for properties both acquired AND placed in service on or after January 19, 2025. Under the old rules, bonus depreciation was phasing down — 40% in 2025, 20% in 2026, then gone. Now you get 100% in Year 1 again. Combined with the STR loophole, this means you can take the FULL accelerated depreciation as a nonpassive deduction against your W-2 income — all in the year you purchase — if you qualify under §469.
Old Rules (TCJA)
40% bonus in 2025 → phasing to 0%
New Rules (OBBBA)
100% bonus → full deduction in Year 1
Both acquired AND placed in service on or after January 19, 2025? You qualify for 100% bonus depreciation.
$500K short-term rental · $400K depreciable basis · 37% combined tax rate (federal + state) · Owner qualifies for STR loophole
| Without Cost Seg | With Cost Seg + STR Loophole Recommended | |
|---|---|---|
| Year 1 Depreciation | $14,545 (straight-line) | $85,000+ (accelerated) |
| Deduction Type | Passive only | Can offset W-2 income — if you qualify† |
| Est. Year 1 Tax Savings | ~$6,000* | $31,450+† |
| Study Cost | — | $499 (63x ROI) |
*Passive losses can offset rental income from other properties and carry forward. Taxpayers with passive income from other sources, or qualifying real estate professionals (IRC §469(c)(7)), may realize significant savings from cost segregation alone.
†The STR loophole requires BOTH: (1) average guest stay of 7 days or less, AND (2) material participation — generally 500+ hours per year of documented involvement in the rental activity. Both conditions must be met annually, and hours must be documented with contemporaneous records (calendars, time logs, booking records). This platform does not determine your eligibility. Consult a tax professional before claiming nonpassive loss treatment. Savings estimate assumes 37% combined federal + state marginal tax rate (e.g., California). Your actual rate and savings will vary.
Enter your STR address. Our Agent gathers property details automatically.
Component-level engineering analysis classifies your property's assets by recovery period — 5-year, 15-year, and 27.5/39-year.
Download your IRS-ready cost segregation report instantly. No site visit needed.
Use the STR loophole to offset your W-2 income with accelerated depreciation — if you qualify (7-day average + material participation). Your CPA files the rest.
What you get for $499 — and what traditional firms charge for each piece.
Get your report the same day you start. No site visit. No 4–8 week wait for a consultant.
Component-level MACRS schedules built on engineering-based methodology consistent with IRS Publication 5653. Includes §1245 recapture and state conformity warnings (CA, NY, NJ).
A 10-minute guided form. AI auto-fills 30+ property fields from public records. Built for investors, not for CPAs.
One price covers everything: site visit, Form 3115 catch-up worksheet, recapture schedules. Free corrections for 14 days. No rush fees, no revision fees, no add-ons.
Side-by-Side
| What you pay for | CostSegX | Traditional CPA firm |
|---|---|---|
| Total cost | $499 flat | $5,000–$15,000 |
| Delivery time | Same day | 4–8 weeks |
| Revisions | Free, 14 days | $200–$500 each |
| Site visit fee | Included | $500–$2,000 |
| Rush fees | None | $500–$2,000 |
| Form 3115 (look-back) | Included | Often extra |
| State conformity warnings | Auto | Manual / sometimes omitted |
| §1245 recapture schedule | Included | Often extra |
Traditional-firm pricing reflects market rates for residential 1–4 unit cost segregation studies and varies by firm and property complexity. CostSegX serves residential 1–4 unit rentals up to $1M depreciable basis.
60-second estimate. No signup. We'll show you the Year-1 deduction your property could generate, plus an eligibility flag for the STR loophole.
Run my free estimateQuestions? info@costsegx.ai
This material is for informational purposes only and does not constitute tax, legal, or financial advice. Consult a qualified tax professional before making tax decisions. Tax savings vary based on individual circumstances, property characteristics, and applicable tax rates. 100% bonus depreciation applies to qualifying property placed in service after January 19, 2025 under the One Big Beautiful Bill Act (OBBBA).