100 STR Tax and Cost Segregation Questions

Start with the fact that changes your answer

Explore 100 researched questions across 20 focused guides. They cover short-term rental tax qualification, cost segregation, bonus depreciation and look-back work on existing LTRs and STRs. These are planning questions selected from recurring rule distinctions and existing AE question coverage; they are not a measured search-volume ranking.

Choose your starting point

1. New STR: classify the activity before projecting W-2 offsets
2. Old LTR: reconstruct historical basis and depreciation
3. Existing STR: separate catch-up depreciation from loss usability
4. Report ready: determine the Form 3115 or correction route
5. Selling soon: model recapture and exit economics

Three distinctions that prevent expensive mistakes

• Seven-day average stays and material participation are separate tests; Schedule C and self-employment tax are separate questions too.
• A new study does not reset old acquisition dates, original bonus rates, asset basis or passive-loss carryforwards.
• A deduction is not tax savings, and a computed deduction is not necessarily usable this year.

Browse 20 topic guides

1. STR Tax Basics: Rental Classification and W-2 Income
2. Seven-Day and Thirty-Day STR Tests
3. STR Material Participation: Tests and Limits
4. Counting Owner, Spouse and Manager Hours
5. STR Personal Use and Vacation-Home Limits
6. Schedule C, Schedule E and STR Services
7. LTRs, Real Estate Professional Status and STRs
8. What a Cost Segregation Study Actually Reclassifies
9. Bonus Depreciation in 2026: Dates and Asset Eligibility
10. Placed in Service: First Guest, Readiness and Year-End
11. Cost Segregation on an Old LTR
12. Cost Segregation on an Existing STR
13. Form 3115 and Section 481(a) Catch-Up Depreciation
14. Amended Return or Form 3115?
15. Converting an LTR to an STR or Back
16. Former Homes Converted to Rentals: Basis and Use
17. Rental Repairs, Improvements and Replaced Components
18. Usable Rental Losses: Basis, At-Risk and Passive Limits
19. Selling After Cost Segregation: Recapture and Exit
20. Study Fees, Documents and Provider Due Diligence

Find your question

100 questions

1. What is the short-term rental tax loophole? — STR Tax Basics: Rental Classification and W-2 Income
2. Can an Airbnb loss offset W-2 income? — STR Tax Basics: Rental Classification and W-2 Income
3. Is every vacation rental an STR for federal taxes? — STR Tax Basics: Rental Classification and W-2 Income
4. Do I need an LLC to use STR tax rules? — STR Tax Basics: Rental Classification and W-2 Income
5. Is tax savings the same as a depreciation deduction? — STR Tax Basics: Rental Classification and W-2 Income
6. How do I calculate average guest stay? — Seven-Day and Thirty-Day STR Tests
7. Does every reservation have to be seven days or less? — Seven-Day and Thirty-Day STR Tests
8. Does a 30-day average automatically qualify? — Seven-Day and Thirty-Day STR Tests
9. Do vacant nights count as rental days in the average? — Seven-Day and Thirty-Day STR Tests
10. What if my average stay exceeds seven days? — Seven-Day and Thirty-Day STR Tests
11. What is the 500-hour material participation test? — STR Material Participation: Tests and Limits
12. Is 100 hours enough for an STR? — STR Material Participation: Tests and Limits
13. Can I qualify if I perform substantially all the work? — STR Material Participation: Tests and Limits
14. Can prior years of participation help this year? — STR Material Participation: Tests and Limits
15. Can I group all my rentals to meet the hours test? — STR Material Participation: Tests and Limits
16. Can my spouse’s STR hours count? — Counting Owner, Spouse and Manager Hours
17. Do property research and investment seminars count? — Counting Owner, Spouse and Manager Hours
18. Do cleaner hours count against my 100-hour test? — Counting Owner, Spouse and Manager Hours
19. Can I materially participate with a property manager? — Counting Owner, Spouse and Manager Hours
20. Is a year-end reconstructed time log sufficient? — Counting Owner, Spouse and Manager Hours
21. How many personal days can I use my STR? — STR Personal Use and Vacation-Home Limits
22. Do family stays count as personal use? — STR Personal Use and Vacation-Home Limits
23. Are maintenance trips personal-use days? — STR Personal Use and Vacation-Home Limits
24. What is the fewer-than-15-days rental rule? — STR Personal Use and Vacation-Home Limits
25. Can cost segregation bypass vacation-home limits? — STR Personal Use and Vacation-Home Limits
26. Does an STR always go on Schedule C? — Schedule C, Schedule E and STR Services
27. When do substantial services require Schedule C? — Schedule C, Schedule E and STR Services
28. Is my STR income subject to self-employment tax? — Schedule C, Schedule E and STR Services
29. Does turnover cleaning alone make it a hotel business? — Schedule C, Schedule E and STR Services
30. Can a property be nonpassive on Schedule E? — Schedule C, Schedule E and STR Services
31. Do I need real estate professional status for an STR? — LTRs, Real Estate Professional Status and STRs
32. What are the real estate professional hour requirements? — LTRs, Real Estate Professional Status and STRs
33. Can spouses combine hours to qualify as real estate professionals? — LTRs, Real Estate Professional Status and STRs
34. Can an old LTR cost segregation loss offset my wages? — LTRs, Real Estate Professional Status and STRs
35. What happens to passive losses when an LTR becomes an STR? — LTRs, Real Estate Professional Status and STRs
36. What is cost segregation for a rental property? — What a Cost Segregation Study Actually Reclassifies
37. Can I depreciate the land in a cost segregation study? — What a Cost Segregation Study Actually Reclassifies
38. Which rental assets can have shorter recovery periods? — What a Cost Segregation Study Actually Reclassifies
39. Can a study put the whole building in five-year property? — What a Cost Segregation Study Actually Reclassifies
40. Is the IRS audit technique guide an approval of my study? — What a Cost Segregation Study Actually Reclassifies
41. Is 100% bonus depreciation available in 2026? — Bonus Depreciation in 2026: Dates and Asset Eligibility
42. Does the rental building itself qualify for bonus? — Bonus Depreciation in 2026: Dates and Asset Eligibility
43. Can used rental components qualify for bonus? — Bonus Depreciation in 2026: Dates and Asset Eligibility
44. Can I elect out of bonus depreciation? — Bonus Depreciation in 2026: Dates and Asset Eligibility
45. Is the bonus rate based on the study completion year? — Bonus Depreciation in 2026: Dates and Asset Eligibility
46. Do I need a first guest before depreciation starts? — Placed in Service: First Guest, Readiness and Year-End
47. Does buying a property before December 31 guarantee a deduction? — Placed in Service: First Guest, Readiness and Year-End
48. Can furniture have a different service date from the building? — Placed in Service: First Guest, Readiness and Year-End
49. What if renovations continue after guests arrive? — Placed in Service: First Guest, Readiness and Year-End
50. Can I pay for a study after year-end? — Placed in Service: First Guest, Readiness and Year-End
51. Can I do cost segregation on a rental bought years ago? — Cost Segregation on an Old LTR
52. Does an old LTR need a new purchase to qualify? — Cost Segregation on an Old LTR
53. Can I catch up depreciation from closed tax years? — Cost Segregation on an Old LTR
54. Will an old LTR study release all passive losses? — Cost Segregation on an Old LTR
55. How old is too old for a cost segregation study? — Cost Segregation on an Old LTR
56. Can I cost segregate an STR I already own? — Cost Segregation on an Existing STR
57. Can I use current bonus rules on my 2021 STR? — Cost Segregation on an Existing STR
58. Does current material participation make my catch-up loss nonpassive? — Cost Segregation on an Existing STR
59. What if I never kept guest-stay records? — Cost Segregation on an Existing STR
60. Can I correct prior STR reporting at the same time? — Cost Segregation on an Existing STR
61. What does Form 3115 do for cost segregation? — Form 3115 and Section 481(a) Catch-Up Depreciation
62. What is a Section 481(a) adjustment? — Form 3115 and Section 481(a) Catch-Up Depreciation
63. Is a negative adjustment always deducted all at once? — Form 3115 and Section 481(a) Catch-Up Depreciation
64. Does Form 3115 require an IRS user fee? — Form 3115 and Section 481(a) Catch-Up Depreciation
65. When is the Form 3115 duplicate copy due? — Form 3115 and Section 481(a) Catch-Up Depreciation
66. Should I amend returns after a cost segregation study? — Amended Return or Form 3115?
67. Is one missed year different from several years? — Amended Return or Form 3115?
68. Can Form 3115 reverse a bonus election? — Amended Return or Form 3115?
69. Can a partnership simply file an amended return? — Amended Return or Form 3115?
70. Can I claim missed depreciation without a study? — Amended Return or Form 3115?
71. Does converting an LTR to an STR restart depreciation? — Converting an LTR to an STR or Back
72. Can new STR furniture qualify separately? — Converting an LTR to an STR or Back
73. What if I convert an STR back to long-term renting? — Converting an LTR to an STR or Back
74. Does changing property managers change the tax result? — Converting an LTR to an STR or Back
75. Can I use an appraisal to reset basis on conversion? — Converting an LTR to an STR or Back
76. What is depreciation basis for a former home? — Former Homes Converted to Rentals: Basis and Use
77. Can I cost segregate a converted primary residence? — Former Homes Converted to Rentals: Basis and Use
78. Is my new mortgage the rental’s depreciation basis? — Former Homes Converted to Rentals: Basis and Use
79. Can I deduct costs while the home is still personal? — Former Homes Converted to Rentals: Basis and Use
80. Does the home-sale exclusion erase depreciation taxes? — Former Homes Converted to Rentals: Basis and Use
81. Are all rental renovations deductible immediately? — Rental Repairs, Improvements and Replaced Components
82. Can a new roof be five-year property? — Rental Repairs, Improvements and Replaced Components
83. How do I avoid counting appliances twice? — Rental Repairs, Improvements and Replaced Components
84. Can I deduct the remaining basis of a replaced component? — Rental Repairs, Improvements and Replaced Components
85. Does the de minimis safe harbor replace cost segregation? — Rental Repairs, Improvements and Replaced Components
86. Why did my cost segregation loss not reduce this year’s tax? — Usable Rental Losses: Basis, At-Risk and Passive Limits
87. Does all mortgage debt count as at-risk basis? — Usable Rental Losses: Basis, At-Risk and Passive Limits
88. Can an excess business loss limit an STR deduction? — Usable Rental Losses: Basis, At-Risk and Passive Limits
89. Do states allow the same bonus depreciation as federal law? — Usable Rental Losses: Basis, At-Risk and Passive Limits
90. Can suspended losses still have future value? — Usable Rental Losses: Basis, At-Risk and Passive Limits
91. Do I pay back depreciation when I sell? — Selling After Cost Segregation: Recapture and Exit
92. Is all depreciation recapture taxed at 25%? — Selling After Cost Segregation: Recapture and Exit
93. Is a study worthwhile if I sell next year? — Selling After Cost Segregation: Recapture and Exit
94. Does a 1031 exchange defer all segregated assets? — Selling After Cost Segregation: Recapture and Exit
95. Are all suspended passive losses released on a sale? — Selling After Cost Segregation: Recapture and Exit
96. How much should a cost segregation study cost? — Study Fees, Documents and Provider Due Diligence
97. What documents should I send for a look-back study? — Study Fees, Documents and Provider Due Diligence
98. Does every study require an in-person inspection? — Study Fees, Documents and Provider Due Diligence
99. What does audit support actually include? — Study Fees, Documents and Provider Due Diligence
100. Who puts the report on my tax return? — Study Fees, Documents and Provider Due Diligence

Related Reading

• STR loophole: qualification and limitations
• Cost segregation study services
• Rental bonus depreciation guide
• Amendment versus Form 3115

Reviewed sources and scope

Reviewed November 8, 2026 by AE Tax Advisors. This is a federal planning resource; the facts, tax year, elections and state rules control the actual return. IRS publications explain rules but do not replace applicable law. The cost segregation audit guide is nonbinding examiner guidance and predates later bonus-depreciation changes.

• IRS Publication 925: passive activity, participation and at-risk rules
• IRS Publication 527: rental use, reporting and depreciation
• IRS Publication 946: depreciation, methods and elections
• IRS Notice 2026-11: additional first-year depreciation
• IRS Form 3115 instructions and filing procedures
• IRS Publication 544: dispositions and recapture

Bring the facts to a scoped review

A study estimates asset classifications; a tax review determines eligible and currently usable deductions. Ask who reconciles basis, prepares any Form 3115 or amended return, and implements the final schedules. No tax saving or investment outcome is guaranteed.

Cost segregation service and scope · Documents checklist · Advisory pricing