That is the useful answer. The rest of this guide explains how to test it.
Educational notice: This article provides general educational information, not tax, legal, securities, or investment advice. Tax outcomes depend on individual facts and current law. Work with a qualified CPA or tax attorney before acquiring an asset, claiming a deduction, or changing an existing plan.
Why can an STR loss be different from a long-term rental loss?
Section 469 of the Internal Revenue Code generally treats rental activity as passive, even when an owner participates. Passive losses ordinarily offset passive income, not wages. That default rule is why a loss from a conventional long-term rental often cannot immediately reduce a taxpayer's W-2 income.
The regulations create several exceptions to what counts as a rental activity for Section 469. One applies when the average period of customer use is seven days or less. Another can apply when the average period is 30 days or less and significant personal services are provided. The current IRS Instructions for Form 8582 explain both exceptions and how to calculate average customer use.
This is a classification rule, not a deduction guarantee. If the activity is not treated as a rental activity, it is analyzed under the regular trade-or-business material-participation rules. The owner must still materially participate for the activity to be nonpassive. Internal Revenue Code Section 469 defines a passive activity as a trade or business in which the taxpayer does not materially participate.
The seven-day test uses an average, not the listing's maximum stay
The analysis looks at the activity's average period of customer use for the tax year. It is not enough to impose a seven-night booking limit or point to selected reservations. The Form 8582 instructions direct taxpayers to divide the total days in all rental periods by the number of rentals. Multiple classes of property can require a weighted calculation.
An operator, CPA, and taxpayer should preserve the reservation-level records behind that average. If the average changes from year to year, the Section 469 classification may change too.
What does material participation require?
Material participation means involvement in the activity on a regular, continuous, and substantial basis. The IRS Publication 925, Passive Activity and At-Risk Rules, describes seven tests available to individuals. The most frequently discussed tests include:
- The taxpayer participates for more than 500 hours during the year.
- The taxpayer's participation is substantially all participation in the activity by all individuals.
- The taxpayer participates for more than 100 hours and at least as much as any other individual.
- Several significant-participation activities, each generally involving more than 100 hours, total more than 500 hours, subject to the detailed rules.
- Prior-year participation or a facts-and-circumstances test applies under the specific requirements in Publication 925.
The right test depends on the actual operating model. It should be selected with a tax professional before the taxpayer relies on the projected loss.
Is there a simple 100-hour rule for STRs?
No. The commonly cited 100-hour test has two parts: the taxpayer must participate for more than 100 hours, and no other individual can participate more. That comparison can include an on-site operator, property manager, cleaner, contractor, or other person, whether or not that person owns an interest.
Another test may fit better. For example, an owner may have substantially all of the participation even with fewer than 100 hours if the facts support it. Conversely, logging 101 hours does not satisfy the comparative test if another person logged more.
Publication 925 also distinguishes operational work from investor activity. Reviewing financial statements, preparing analysis for personal use, and monitoring an activity in a nonmanagerial capacity generally do not count unless the taxpayer is directly involved in day-to-day management or operations. Work performed mainly to avoid the passive-loss limitation can also be excluded under the publication's rules.
Does a spouse's work count?
Publication 925 states that a taxpayer's participation includes a spouse's participation, even if the spouse owns no interest and the couple does not file jointly. That can matter, but the activity, ownership, filing position, and records still require professional review.
Must an STR owner qualify as a real estate professional?
Not necessarily. The real-estate-professional rules are a separate path for rental real estate. When an STR meets a regulatory exception and is not classified as a rental activity for Section 469, the regular material-participation analysis is generally the relevant issue. A taxpayer should not assume that the separate 750-hour real-estate-professional test controls the STR analysis, or that avoiding that test removes the need for material participation.
How does depreciation create a tax loss?
Depreciation is the tax system's method for recovering the cost of qualifying business or income-producing property over time. Land is not depreciable. The building, furniture, equipment, and certain improvements may have different recovery periods and methods.
The IRS Publication 527, Residential Rental Property, explains that depreciation begins when property is ready and available for rent, not merely when the purchase closes. A December closing followed by renovations that continue into January may produce a different tax-year result than a property that is ready and available in December.
Depreciation can make taxable activity income lower than cash flow because it is a noncash deduction. But depreciation does not convert a weak investment into a sound one, and a deduction is not a dollar-for-dollar tax credit.
What does a cost-segregation study do?
A cost-segregation study identifies components of a building that may qualify for shorter tax-recovery periods than the building itself. Furniture, certain land improvements, and qualifying building components may be classified separately when the facts and law support the classification.
Shorter recovery periods can accelerate deductions. They do not create basis, change land into depreciable property, or validate unsupported allocations. The IRS publishes a Cost Segregation Audit Technique Guide describing how examiners evaluate studies. The guide is useful for understanding documentation standards, but it expressly says that it is not an official IRS pronouncement and cannot be cited as legal authority.
What changed for bonus depreciation in 2026?
Current Section 168(k) and IRS Notice 2026-11 provide a permanent 100 percent additional first-year depreciation deduction for eligible qualified property acquired and placed in service after January 19, 2025, subject to the statute, interim guidance, elections, and eligibility requirements.
This does not mean that 100 percent of an STR purchase price is deductible. The residential building itself generally has a 27.5-year recovery period and is not qualified property under the 20-years-or-less requirement. Land is never depreciable. Certain assets identified through a supportable cost-segregation analysis may qualify. Acquisition date, binding-contract rules, business use, related-party history, placed-in-service date, and elections can change the result. IRS Publication 946 contains the current depreciation framework.
The 2026 decision framework
Use this sequence with the taxpayer's CPA or tax attorney. A projected depreciation number is only one input.
1. Is the asset an investment that works before tax benefits?
Review the market, purchase basis, financing, operating assumptions, reserves, fees, management structure, downside cases, liquidity, and exit plan. The tax benefit has value only if it is attached to a suitable asset and a sustainable capital plan.
2. Will the activity meet an STR exception for Section 469?
Model the average customer-use period using actual or supportable expected booking data. Identify the operational records that will substantiate the calculation. Do not substitute marketing language such as “short term” for the regulatory test.
3. Which material-participation test is realistic?
Map every owner's planned work against the work of managers, employees, and contractors. Separate operational participation from investor review. Confirm whether the ownership vehicle affects the available tests. Publication 925 notes special restrictions for limited partners.
4. How will participation be documented?
Publication 925 permits any reasonable method of proof and says contemporaneous daily logs are not mandatory if participation can be established another way. That is not a reason to reconstruct a year from memory. Calendars, task records, dated communications, operating-platform records, and descriptions of work create a stronger file. Records should show what was done, when, for how long, and why it was operational.
5. What will be placed in service, and when?
Build a property-level schedule for the building, furniture, equipment, improvements, and land. Confirm when each item is ready and available for its intended business use. Do not use the closing date as an automatic proxy.
6. Is the cost segregation and bonus-depreciation model supportable?
Request the study methodology, asset detail, source documents, site inspection approach, legal classifications, and reconciliation to purchase basis. Confirm which assets are eligible for Section 168(k), which use regular MACRS depreciation, and which are not depreciable.
7. Do basis and at-risk limits allow the projected loss?
An allocated loss is not necessarily a deductible loss. Owners of pass-through entities generally need enough tax basis. Section 465 can also limit a loss to the amount the taxpayer has at risk. The IRS Instructions for Form 6198 explain that some nonrecourse financing is not at risk, while qualifying nonrecourse financing secured by real property may receive different treatment.
8. Is the loss nonpassive after applying Section 469?
Confirm the activity classification and material participation on the taxpayer's facts. If the loss is passive, it generally cannot offset wages in the current year and may instead be suspended under the passive-activity rules.
9. Does the excess-business-loss limitation apply?
Even a nonpassive business loss can face another limit. Noncorporate taxpayers use Form 461 to calculate an excess business loss. A disallowed amount is generally treated as a net operating loss carryover under the current instructions. The annual threshold is indexed and should be checked for the filing year.
10. What happens at refinance, sale, or conversion to personal use?
Accelerated deductions affect adjusted basis. A later sale can produce depreciation recapture, unrecaptured Section 1250 gain, capital gain, or other tax consequences depending on the assets and transaction. IRS Publication 544 explains the disposition rules for depreciable property. A complete analysis models entry, operation, and exit, not only year one.
A simplified example without a promised outcome
Assume an executive acquires an interest in an operating STR activity. The property becomes ready and available for rent during the same tax year. Reservation records show an average customer-use period of seven days or less. The executive performs qualifying operational work and satisfies one of the material-participation tests. A qualified study allocates part of the depreciable basis to eligible shorter-lived property.
Those facts may support a nonpassive depreciation loss. The amount that reaches the return still depends on ownership basis, Section 465 at-risk amount, the final asset schedule, business-use percentage, passive-activity grouping, Form 461, and the rest of the return. Change any one of those facts and the result may change.
This is why a credible analysis does not begin with “How large a write-off can I get?” It begins with “Which facts must be true, who will verify them, and what happens if one is not?”
Common mistakes to avoid
- Treating every Airbnb or vacation rental as automatically eligible.
- Calling 100 hours a safe harbor without comparing everyone else's participation.
- Counting investment review as operational participation.
- Assuming the closing date is the placed-in-service date.
- Applying 100 percent bonus depreciation to land or the entire building.
- Using an unsupported percentage instead of a defensible asset study.
- Ignoring entity basis, debt structure, at-risk rules, or Form 461.
- Modeling the initial deduction without modeling recapture and exit taxes.
- Allowing personal use to change the property's tax treatment without analysis.
- Claiming a tax result before a qualified professional reviews the taxpayer's complete facts.
Questions to take to your CPA or tax attorney
- Is this activity expected to meet a Section 469 rental-activity exception for this tax year?
- Which material-participation test fits my operating role, and what work counts?
- How should my spouse's participation, a manager's hours, and contractor time be documented?
- How does my entity interest affect material participation, basis, and at-risk limits?
- When will each asset be placed in service?
- Which cost-segregated assets are eligible for bonus depreciation under current law?
- Could Form 461, net operating loss rules, the alternative minimum tax, state law, or NIIT change the projected result?
- How do personal-use days affect deductions?
- What K-1, Form 4562, study, and operating records will I receive?
- What depreciation recapture and exit taxes should be included in the full-period model?
The bottom line
STR depreciation can potentially offset W-2 income, but only through a chain of connected facts. The activity must be classified correctly. The taxpayer must materially participate. The asset basis and classifications must be supportable. The property must be placed in service. The loss must survive basis, at-risk, passive-loss, and excess-business-loss limits.
The best next step is a coordinated review with the taxpayer's tax professional before a transaction closes, not a deduction estimate after the year has ended.
No tax outcome is promised. Eligibility and results depend on individual facts, participation, investment structure, asset performance, and current law.