Understanding Property Taxes in Utah

Utah property taxes are calculated differently than most states. Understanding assessment ratios, Truth in Taxation notices, and exemptions is essential for accurate underwriting, especially for a rental.

How Utah Assesses Property Value

Each county assessor determines the fair market value (FMV) of the properties in that county every year. The taxable value for most residential properties is 55% of FMV (the "assessment ratio"). This means a home with a $500,000 FMV has an assessed value of $275,000 for tax calculation purposes. The total tax owed is: assessed value × the combined tax rate (all overlapping taxing entities, county, city, school district, water district, etc.).

• Utah County effective rate: approximately 0.52–0.65% of FMV (varies by city)
• Salt Lake County: approximately 0.58–0.72% of FMV
• Davis and Weber counties: similar range

What Is Truth in Taxation?

Utah's Truth in Taxation law (Utah Code § 59-2-919) requires any taxing entity that plans to collect more revenue than the prior year to hold a public hearing and explicitly notify property owners. You may receive a "Truth in Taxation" notice in August/September. This is not your tax bill, it is a notice that your taxing entities are considering a rate increase and that you have the right to attend a public hearing and comment.

Why this matters for investors: even if your property value holds flat, your tax bill can increase if the school district or city votes to raise their levy. Underwrite with a 3–5% annual property tax escalator in your cash flow models.

The Primary Residential Exemption

Utah's residential exemption reduces the taxable value of qualifying residential property to 55% of FMV (a 45% exemption). It applies to a home that is someone's primary residence, and that can be a tenant: a long-term rental that a tenant occupies as their primary residence for at least 183 consecutive days generally qualifies. Nightly and short-term rentals, vacation homes, and second homes do not qualify and are taxed at 100% of FMV. That difference is a significant underwriting factor for a short-term rental or second home. Ask the county assessor to confirm how the exemption is applied to a specific property, and always verify the current year's tax bill in the county assessor's database before closing on any investment property. For the rules themselves, see the Utah State Tax Commission (tax.utah.gov).

Appealing Your Assessment

If you believe your property is over-assessed, you can file a petition with the County Board of Equalization (BOE) typically by September 15 of the tax year. Bring comparable sales (not listing prices), and present evidence that the assessor's FMV exceeds actual market value. In rapidly appreciating markets, assessments can lag, but in correcting markets, they can overshoot. Most counties have informal review processes before a formal BOE appeal.

Investor Underwriting Checklist

• Pull the current year tax bill from the county assessor's site before making an offer
• Confirm whether the property receives the residential exemption. A long-term, tenant-occupied rental generally qualifies; a short-term rental or second home does not, so model that difference in your NOI
• Model a 3–5% annual tax escalator in your NOI projections
• Check if the property is in a special assessment district (Mello-Roos equivalent) for infrastructure improvements