Key takeaways
- STRs typically gross more and net proportionally less — expense ratios run 25% to 45% of revenue.
- Regulation is the dominant risk and can change with a single municipal vote.
- Revenue is seasonal and event-driven; underwrite on trailing twelve months, not peak months.
- The short-term rental tax loophole can allow active loss treatment when material participation is met.
The revenue and expense reality
A short-term rental in a strong market may gross two to three times its long-term rent equivalent. It also carries cleaning, supplies, utilities, internet, furnishing, platform fees, higher insurance, dynamic pricing tools, and either your time or a manager taking 15% to 25% of revenue.
Underwrite on trailing twelve-month data from comparable active listings, not on peak-season nightly rates multiplied by optimistic occupancy. Occupancy in most markets sits well below what a spreadsheet assumes, and revenue is concentrated in a handful of months.
Regulation is the real risk
Cities have restricted short-term rentals through permit caps, primary-residence requirements, minimum stay rules, outright bans in defined zones, and enforcement against platform listings. HOAs and condo associations impose their own restrictions, sometimes retroactively.
Before buying, read the current municipal code, check whether new permits are being issued, review any pending council agenda items, and read the HOA declaration. A property whose entire business model depends on a permit that may not be renewable is a speculative position, not a rental.
The tax treatment that makes STRs unusual
Rental income is normally passive, and passive losses cannot offset ordinary income for most taxpayers. Short-term rentals where average guest stay is seven days or less are not treated as rental activities under the passive activity rules, so with material participation, losses may offset active income.
Combined with bonus depreciation and cost segregation, this produces the strategy commonly called the short-term rental loophole. It is legitimate, it is fact-specific, and material participation must be genuinely met and documented. Work with a CPA — see depreciation.
Frequently asked questions
What occupancy should I assume?
Depends entirely on market and property. Pull trailing twelve-month data on comparable active listings rather than relying on platform projections, which skew optimistic.
Do I need special insurance?
Yes. Standard homeowners and most landlord policies exclude short-term rental activity. You need a commercial or purpose-built STR policy; platform host protection is not a substitute.
What happens if my city bans STRs?
Underwrite the property so it still works as a long-term rental at market rent. If it does not, you are taking regulatory risk with no floor.
Sources & further reading
- IRC §469 and Treasury Regulation §1.469-1T(e)(3)
- AirDNA market research methodology
- Municipal short-term rental ordinance surveys
Figures and rules change. Verify current requirements with the issuing agency or a licensed professional before acting.