Short-Term Rental Tax Write-Offs in Arizona: What Owners Should Know

One of the most overlooked advantages of operating a short-term rental in Arizona is the tax treatment. Done correctly, an STR can be one of the most tax-efficient real estate strategies available to individual investors. Done carelessly, it can leave thousands of dollars on the table — or trigger problems with the IRS.

This article is not tax advice. It is a plain-English overview of the categories most Arizona STR owners should be aware of. Always confirm your specific situation with a qualified CPA who works with short-term rentals.

The two ways the IRS treats short-term rentals

Short-term rentals are not automatically considered passive real estate. If the average guest stay is seven days or less, the IRS often treats the activity as a business rather than a passive rental. This distinction matters because it affects depreciation, loss treatment, and how rental income interacts with your other income.

The result: many Arizona STRs qualify for what is commonly called the "short-term rental loophole" — the ability to use bonus depreciation and cost segregation to offset W-2 or active business income, subject to material participation rules.

Common deductions Arizona STR owners should be tracking

• Depreciation on the building, furniture, and large amenities (often accelerated through cost segregation)
• Mortgage interest on financing tied to the property
• Property taxes
• Insurance (STR-specific policy is recommended)
• Utilities — electric, water, gas, internet, streaming services
• Cleaning fees and supplies
• Maintenance and repairs — pool service, landscaping, HVAC, pest, handyman
• Professional management fees
• Listing fees and OTA commissions
• Marketing — professional photos, branded materials, direct booking site
• Software — pricing tools, channel managers, smart lock subscriptions
• Travel to and from the property for legitimate business reasons
• Furniture, decor, and amenity upgrades (often eligible for accelerated depreciation)

Cost segregation: the most underused lever

A cost segregation study reclassifies portions of a property into shorter depreciation categories — often unlocking large first-year deductions. For Arizona STRs in the $700,000–$2M+ range, this can translate into tens or hundreds of thousands in accelerated depreciation. Combined with the short-term rental treatment, it is one of the most powerful tax positions available to high-income owners.

Arizona-specific items to keep in mind

• Arizona Transaction Privilege Tax (TPT) and local lodging taxes are typically pass-through, not income — track them separately
• Scottsdale, Phoenix, and surrounding cities each have their own STR licensing fees, which are deductible
• HOA fees, if any, are generally deductible

What to set up from day one

1. A separate bank account and credit card for the property
2. Clean monthly bookkeeping — categorize every expense
3. A capital improvements log (anything that extends the useful life of the property)
4. A mileage log if you visit the property for business reasons
5. Before your first tax year closes, talk to a CPA who actively works with STRs

The owners who take the tax side seriously from day one consistently outperform — not because the property earns more, but because they keep more of what it earns. If you want help understanding how a specific Scottsdale, Paradise Valley, or Phoenix property might perform on the revenue side, request a free Revenue Projection and we can walk through the numbers with you.