Compare taxes and see how much you save moving from Utah to Arizona
Utah and Arizona are two of the Mountain West's most popular migration destinations — both with flat income taxes and low property taxes. But Arizona's 2.5% flat rate is dramatically lower than Utah's 4.55%. At $100,000 income: Arizona income tax $2,500 vs Utah $4,550 — Arizona saves $2,050/year. Property taxes are nearly identical: Utah ~0.57% vs Arizona ~0.63% — a negligible difference. Arizona is clearly cheaper on income taxes for all working professionals. The comparison shifts only marginally for retirees, where Utah exempts some retirement income but Arizona's flat 2.5% rate is lower even after Utah's exemptions for many income profiles. Arizona is the tax-efficient choice in the Mountain West unless the specific career or lifestyle needs of Salt Lake City outweigh the $2,050+ annual tax difference.
Flat Rate
Flat 4.55% income tax; very low property tax ~0.57%; 6.1% state sales tax
Flat Rate (since 2023)
Flat 2.5% income tax; low property tax ~0.63%; combined sales tax ~8.37%
At $100,000 income:
That is $171/month back in your pocket!
| Income | UT Tax | AZ Tax | Savings | 10-Year |
|---|---|---|---|---|
| $50,000 | $2,275 UT income tax (4.55%); ~$855 property ($150K × 0.57%) = ~$3,130 total | $1,250 AZ income tax (2.5%); ~$945 property ($150K × 0.63%) = ~$2,195 total | AZ saves ~$935 | $9,350 |
| $75,000 | $3,413 UT income tax; ~$1,425 property ($250K × 0.57%) = ~$4,838 total | $1,875 AZ income tax; ~$1,575 property ($250K × 0.63%) = ~$3,450 total | AZ saves ~$1,388 | $13,880 |
| $100,000 | $4,550 UT income tax; ~$1,710 property ($300K × 0.57%) = ~$6,260 total | $2,500 AZ income tax; ~$1,890 property ($300K × 0.63%) = ~$4,390 total | AZ saves ~$1,870 | $18,700 |
| $150,000 | $6,825 UT income tax; ~$2,280 property ($400K × 0.57%) = ~$9,105 total | $3,750 AZ income tax; ~$2,520 property ($400K × 0.63%) = ~$6,270 total | AZ saves ~$2,835 | $28,350 |
| $200,000 | $9,100 UT income tax; ~$2,850 property ($500K × 0.57%) = ~$11,950 total | $5,000 AZ income tax; ~$3,150 property ($500K × 0.63%) = ~$8,150 total | AZ saves ~$3,800 | $38,000 |
CountryTaxCalc.com is reader-supported. When you use our partner links, we may earn a commission at no cost to you. This helps us provide free tax calculators and comparison tools. Learn more about our affiliate partnerships
★ 4.8 verified reviews · 3,758 reviews
Moving between Utah and Arizona? Mountain West partial-year returns, retirement income planning, and state domicile changes need specialist guidance. Get matched with a CPA who specialises in Western state moves.
⚠ Not for simple single-state returns. Free filing is fine for straightforward W-2 situations.
Get Matched With a CPA →Utah offers a retirement income tax credit of up to $450/person for filers aged 65+ (2024), phasing out at higher incomes (begins phasing out at $25,000 single/$32,000 joint AGI). This is a relatively modest retirement tax advantage. For Social Security income: Utah exempts Social Security benefits from state income tax for filers with AGI below $25,000 (single) or $32,000 (joint), with a phase-out above those thresholds. At higher retirement incomes ($60,000+), Utah's Social Security exemption phases out and the full 4.55% flat rate applies. Arizona's 2.5% flat rate on all income is simpler and often lower for retirees with significant income. For retired couples with $100,000+ combined income: Arizona is clearly cheaper after Utah's limited exemptions are exhausted.
Silicon Slopes refers to the technology corridor along Utah's Wasatch Front, primarily in Salt Lake City, Sandy, Draper, and Provo-Orem. Key drivers of Utah's tech growth: (1) Strong pipeline from Brigham Young University (Provo) and University of Utah graduates; (2) Low cost of living relative to San Francisco and Seattle attracting tech workers; (3) Early tech company successes (Qualtrics, which sold to SAP for $8B; Domo; Overstock; Extra Space Storage) creating local entrepreneurship models; (4) Adobe's largest US campus outside headquarters; (5) Goldman Sachs, Amazon, eBay, and Microsoft having significant operations. Utah's tech employment growth has ranked near the top of all states annually since 2015. For software engineering and tech careers, Utah is increasingly competitive with Arizona's semiconductor and financial services focus.
Both metros have seen significant housing appreciation. Salt Lake City metro median home price approximately $525,000–575,000 (2024). Phoenix metro median home price approximately $420,000–460,000 (2024). Phoenix is meaningfully more affordable on purchase prices — approximately $100,000–150,000 less for comparable housing. Property tax rates are near-identical (UT 0.57% vs AZ 0.63%), so the annual property tax bill is also lower in Phoenix due to lower home prices. Combined with Arizona's lower income tax, Phoenix has a significant overall cost-of-living advantage vs Salt Lake City. The trade-off: SLC's ski access and outdoor lifestyle may justify the premium for certain buyers.
Utah has reduced its income tax modestly in recent years — from 4.95% to 4.85% to 4.65% to 4.55% (current), with some years seeing $160–200 million in tax relief packages. Utah's Governor Cox and the legislature have continued discussing further reductions, with a long-term goal of reaching 4.0% or below. However, Utah has not enacted the kind of locked-in annual reduction schedule that North Carolina, Iowa, or Nebraska have. Utah's tight general fund (much of income tax revenue is constitutionally dedicated to education) limits how aggressively it can cut. The trajectory is gradual — perhaps reaching 4.0–4.25% by 2027–2028. Arizona's 2.5% rate, which resulted from a court victory over Prop 208's surtax structure, is unlikely to increase in the near term.
Nevada offers the best overall tax environment in the Mountain West — zero income tax, low property tax (~0.56%), and no estate tax. Wyoming is even lower (zero income, ~0.57% property). Among Mountain West states with income tax: Arizona's 2.5% flat is the lowest. The Mountain West ranking (best to worst for income tax): Nevada/Wyoming (0%) > Arizona (2.5%) > Utah (4.55%) > Colorado (4.4%) > Montana (5.9%) > Idaho (5.8%) > New Mexico (5.9%). For total burden including property tax: Nevada and Wyoming remain the leaders; Arizona is the best option among income-tax states for most homeowners. Utah's advantage is its very low property tax (same as Arizona's nearly) making the income tax the dominant differentiator.