Property Taxes in Salt Lake City (UT)

1. How Utah property tax actually works

Utah taxes real property through a purely local, county-based ad valorem (per-value) system. Every one of Utah's 29 counties elects its own County Assessor, who is responsible for determining each property's fair market value as of January 1 each year; that value, after any exemption is applied (Section 2), becomes the taxable assessed value that local mill levies apply to. Utah, unlike some states this site covers, doesn't apply a separate statewide "assessment ratio" discount on top of the exemption — the primary residential exemption itself is the mechanism that keeps the taxable base below full market value for owner-occupied homes.

Utah's overall tax structure runs the opposite direction from its property tax: the state levies a flat 4.45% individual income tax with no brackets, and the state sales tax rate is 6.10%, with a statewide average combined state-and-local rate of 7.19% — both well up in national rankings even as property tax runs low. See our relocating guide for the full income- and sales-tax picture (Tax Foundation).

2. The 45% primary residential exemption

This is Utah's signature property-tax feature, and it's a genuinely different mechanism from a typical state homestead exemption: under Article XIII, Section 3 of the Utah Constitution, 45% of a primary, owner-occupied home's fair market value is exempt from property taxation entirely — not a flat dollar amount, and not tied to the owner's age or income. Only the remaining 55% of assessed value is actually taxed. The exemption applies automatically to most owner-occupied primary residences and to up to one acre of surrounding land, but keeping it current requires action on the owner's part: county assessors periodically require a Residential Property Declaration (forms PT-19A/PT-19B) to confirm occupancy and use, and the declaration must be filed within the window the assessor's notice specifies to keep the exemption in place (Utah State Tax Commission; Utah County Assessor).

This structural exemption, not a low assessment ratio or a low mill levy, is the main reason Utah's statewide average effective property tax rate runs low by national standards even before any individual protest or freeze applies — see Section 4 for the actual county-by-county numbers.

Sources: Utah State Tax Commission, Primary Residential Exemption (tax.utah.gov/propertytax/tax-relief/primary-residential-exemption); Utah County Assessor, Residential Exemption (assessor.utahcounty.gov/residential-exemption).

3. Truth in Taxation: Utah's public-hearing brake on revenue growth

This is a genuinely distinctive Utah mechanism worth naming plainly, because it changes how a rising home value actually translates into a higher tax bill here compared to many other states. Under Utah's Truth in Taxation system, when property values rise across a taxing jurisdiction, that jurisdiction's own mill levy automatically adjusts downward so that the same total pool of existing properties generates the same total revenue as the prior year — growth in value alone doesn't automatically hand a city, county, school district, or special district more tax revenue. If a taxing entity wants to collect more revenue from existing properties than that revenue-neutral baseline, it has to say so publicly: state law requires it to advertise the proposed increase, hold a public Truth in Taxation hearing, and formally adopt the higher rate before it can take effect (AskDoss).

In practice, this means a homeowner's tax bill can still rise even without a formal rate increase — new construction and newly taxable property are typically added to the base outside the revenue-neutral calculation, and an individual property's own assessed value can rise or fall relative to its neighbors even when the jurisdiction's total revenue holds flat — but a genuine, jurisdiction-wide revenue increase beyond that baseline can't happen quietly. Confirm a specific taxing entity's current-year Truth in Taxation hearing notice directly with that county, city, or district if a bill looks like it's risen for a reason beyond ordinary reassessment.

4. Effective property tax rates by county

Utah's statewide average effective property tax rate runs low by national standards — Tax Foundation puts it at roughly 0.48% of home value, while a second independent tally (PropertyTaxByState.com) puts it slightly higher, at roughly 0.52-0.55%, both real, sourced figures reflecting ordinary year-to-year and methodology variance rather than a contradiction (Tax Foundation; PropertyTaxByState.com). County-level effective rates vary more than that narrow statewide spread suggests, though, and this market's six counties span a real range:

Every figure above is a county-wide effective rate (tax paid as a share of value after the primary residential exemption where applicable), not a millage figure, and blends every overlapping taxing jurisdiction within that county. A specific address's actual combined mill levy depends on which city, school district, and special districts it sits inside; confirm the current combined rate for a specific address with that county's own assessor rather than relying on a county-wide average.

Sources: Tax Foundation, Utah (taxfoundation.org/location/utah); PropertyTaxByState.com, Utah (propertytaxbystate.com/utah); PropertyTaxPeek, Utah (propertytaxpeek.com/state/utah).

5. The circuit-breaker: relief for qualifying seniors and disabled homeowners

On top of the primary residential exemption every qualifying owner-occupant gets automatically, Utah runs a separate circuit-breaker program specifically for lower-income seniors and disabled homeowners: a refundable state income-tax credit that offsets part or, for the lowest-income qualifying households, effectively all of a homeowner's remaining property tax burden. For the 2025 tax year, homeowners age 66 or older (or with a qualifying disability) with household income below $38,369 could qualify, with the credit claimed directly on the household's Utah state income tax return (Form TC-40, Schedule H) rather than through a separate application to the county (AskDoss). That income threshold is exactly the kind of figure a legislature revisits periodically — confirm the current year's threshold and any age or disability documentation requirements directly with the Utah State Tax Commission before assuming the 2025 figure above still applies.

6. Appealing your assessment

Utah county assessors mail assessment notices in the July-August window each year, and a property owner who disagrees with the resulting value has a real, but time-limited, right to appeal: current guidance puts the appeal deadline at September 15 for filing with the county's own Board of Equalization, which then holds hearings in the September-October window that follows (AskDoss). Because that deadline is set within a single tax year's own calendar and can shift, confirm the current year's exact filing deadline and required paperwork directly with your county assessor's office or Board of Equalization before relying on this page for a specific appeal. It's also worth checking that the primary residential exemption (Section 2) actually appears correctly on a first tax bill after a purchase or a reassessment — that's a separate, common source of an incorrect bill from a genuine valuation dispute, and it's usually a faster fix through the assessor's office directly than a full Board of Equalization appeal.

7. How we keep this page current

The structural mechanics in Sections 1 through 3 (the county-based ad valorem system, the constitutional 45% primary residential exemption, and the Truth in Taxation public-hearing requirement) are settled state law and don't change often, though the specific dollar and percentage thresholds inside related programs are exactly the kind of figures a legislature revisits periodically. The county effective-rate figures in Section 4 and the circuit-breaker threshold in Section 5 reflect current published research but update on their own schedule as county tax rolls and state tax-year figures change. Two gaps are flagged rather than guessed at: Salt Lake County's and Utah County's own effective rates distinct from the statewide range (Section 4), and the exact current-year Board of Equalization appeal deadline for a specific county (Section 6) — both worth a direct check with the relevant county assessor. If you spot something on this page that's changed, or notice a broken link, we'd like to know — see our contact information.