Utah's residential exemption taxes a primary residence on 55% of its market value. Second homes, short-term rentals, and investment properties are taxed on the full value — which is why the same house can carry a bill nearly twice as high for a non-occupant owner.
Your real rate is the sum of every entity that taxes your parcel — county, city, school district, water and special districts — and each one certifies its own rate every fall. Around 1.0–1.1% of taxable value is a reasonable starting point for much of Utah County; look up your exact district on Utah County's official calculator and enter it here.
How Utah Property Taxes Work
Utah runs a "certified tax rate" system: as property values rise, rates automatically fall so each taxing entity collects roughly the same revenue as the year before — a district that wants more must hold a public Truth in Taxation hearing first, which is why Utah County sees a wave of hearings every August. Combined with the 45% primary-residence exemption, the result is that Utah County's effective property taxes land well below the national norm for owner-occupants. The estimator applies exactly that mechanic: market value × 55% (if primary) × your combined rate. For the tax line inside a full monthly payment, use the Mortgage Calculator.