The Short-term rental strategy has become a popular investment strategy in Colorado, especially with platforms like Airbnb and VRBO booming in cities like Denver, Boulder, and the mountain resort towns. What many property owners don’t realize is that the IRS treats short-term rentals very differently than traditional rental properties. When structured correctly and by using a qualified real estate CPA, this difference—commonly referred to as the short-term rental tax loophole—can create significant tax savings.
As a Denver CPA firm specializing in real estate tax planning, we work with clients every year who benefit from this powerful opportunity. Here’s what you need to know.
What Is the Short-Term Rental (STR) Loophole?
Normally, rental income and losses are considered passive under IRS rules. This means you can’t use rental property losses (from depreciation, mortgage interest, or expenses) to offset your W-2 wages or active business income. But STRs can qualify as non-passive if:
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- Your average guest stay is 7 days or fewer, and
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- You materially participate in managing the property.
If both apply, your losses are treated as active. This allows you to use them to reduce other taxable income—something traditional landlords generally cannot do.
The Seven-Day Rule
This is the heart of the loophole. According to Treasury Regulations, an activity is not considered a rental if the average period of customer use is seven days or less. That’s why many Airbnb and VRBO hosts in Denver and across Colorado can take advantage of this special treatment.
The Thirty-Day Rule
The 30-day mark introduces another wrinkle. If your guests stay 30 days or fewer, they are considered transient, and your property is classified as nonresidential. This affects your depreciation schedule:
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- Residential property: depreciated over 27.5 years
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- Nonresidential property: depreciated over 39 years
While that longer schedule may seem like a drawback, Denver property owners often benefit through strategies such as bonus depreciation and Section 179 expensing when making improvements. In other words, there are still ways to accelerate your deductions. Additional opportunities exist to segregate costs and accelerate even more deductions.
Hotel-Like Services and STRs
If you provide services beyond a typical rental, such as daily cleaning, meals, or concierge amenities, the IRS views your activity as more like a hotel business than a rental. In this case:
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- The property is considered nonresidential
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- Income may be subject to self-employment tax
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- Activities are reported on Schedule C (like a business), not on rental schedules
For most Denver Airbnb hosts, these services are not provided, so the property remains a rental activity for classification purposes.
Local Rules in Denver and Colorado
While the tax advantages of STRs can be significant, local laws play an equally important role. Denver, Boulder, and many Colorado mountain towns have passed ordinances limiting short-term rentals. These rules are often justified by concerns over housing shortages, neighborhood disruption, or the hotel industry’s pushback against competition.
For example, in Denver, short-term rentals are typically only allowed in a host’s primary residence, and the city enforces licensing requirements. Before planning your tax strategy, it’s critical to understand and comply with these local restrictions.
STRs and Real Estate Professional Status (REPS)
If you’re trying to qualify as a real estate professional (REPS) for tax purposes, STR rules can complicate things. Hours spent managing short-term rentals with an average stay of 7 days or fewer do not count toward the 750-hour annual requirement for REPS. Courts have consistently upheld this interpretation, though IRS guidance hasn’t always been consistent.
This means that while STRs can generate non-passive tax benefits, they generally cannot help you qualify for REPS on their own.
Key Takeaways for Denver Property Owners
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- 7-day stays or fewer: Your STR may be treated as non-passive, allowing you to offset other income with property losses.
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- 30-day stays or fewer: Your property is considered nonresidential, changing the depreciation schedule but opening up bonus depreciation opportunities.
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- Hotel-like services: Change the classification to a business, subjecting income to self-employment tax.
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- Denver rules: Local ordinances may limit how and where you operate a short-term rental.
Here is a quick comparison of the 30 day versus 7 day rule
| Average Guest Stay |
Personal Services |
Tax Treatment | Type | Self Employment Tax |
| Any | Yes | Business (hotel-like) | Nonresidential | Yes |
| >30 days | No | Traditional Rental | Residential | Nope |
| 8-30 days | No | Short-term | Nonresidential | Nope |
| 0-7 days | No | Loophole eligible | Nonresidential | Nope |
Cost Segregations
Cost segregation can be a powerful tax-planning strategy for short-term rental owners who qualify for the short-term rental loophole. By breaking a property’s purchase price into shorter-lived components (such as 5-, 7-, and 15-year property), cost segregation accelerates depreciation deductions into earlier years. When combined with the short-term rental loophole—where rental losses may be treated as non-passive if specific IRS tests are met—those accelerated depreciation deductions can potentially offset active income like W-2 wages or business income, not just rental income. For qualifying owners, this strategy can significantly reduce current-year tax liability while improving cash flow, making it especially valuable for high-income short-term rental investors who materially participate in their properties.
Work With a Denver Real Estate CPA Who Understands STR Tax Rules
The short-term rental loophole can be incredibly valuable and important for tax compliance, but it’s also complex. Your results depend on guest stay length, your level of involvement, the services you provide, and how Denver or Colorado regulations apply to your property.
At Complete CPA Solutions located in Denver, CO, we help Airbnb and short-term rental owners navigate these rules and build smart, compliant tax strategies. If you own or are considering a short-term rental in Denver or the surrounding area, contact us today to discuss how you can maximize your tax benefits.