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HEAD-TO-HEAD TAX COMPARISON · 2026

COUNTRY A Utah VS COUNTRY B Idaho

Side-by-side analysis of income tax, effective rates, and take-home pay for Utah and Idaho in 2026.

Daniel · CountryTaxCalc Updated May 2026 Tax Comparison 2026
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OVERVIEW
Utah has a flat 4.55% income tax, while Idaho charges a flat 5.3% rate (reduced from 5.8% in 2026). Living in Utah saves $750/year on $100k income compared to Idaho. Property taxes are nearly identical (UT 0.48% vs ID 0.50%), and sales taxes are similar (UT 7.19% vs ID 6.03%). Overall, Utah offers modest tax advantages, plus a larger job market (Salt Lake metro 2.8M vs Boise 765K) and stronger economy. Both states see explosive growth from California refugees.
Section 01

The Big Picture

Top-line rates and effective take-home for a typical earner — including income tax, social contributions, and applicable surcharges.

⛰️
COUNTRY A
Utah
TAX RATE
4.55%
Flat Rate

Flat 4.55% on all income

🥔
COUNTRY B
Idaho
TAX RATE
5.3%
Flat Rate

Flat 5.3% on all income (reduced from 5.8% in 2026)

TYPICAL ANNUAL DIFFERENCE
Moving from Idaho → Utah at $100,000
$750

That's $63/month back in your pocket

Section 02

Tax Savings by Income Level

Net take-home after all income tax, social contributions, and surcharges — for a single employee with no dependents.

GROSS INCOME
⛰️ UT TAX
🥔 ID TAX
SAVINGS
10-YEAR
$50,000
$2,275
$2,650
$375
$3,750
$100,000
$4,550
$5,300
$750
$7,500
$200,000
$9,100
$10,600
$1,500
$15,000
$500,000
$22,750
$26,500
$3,750
$37,500
💡

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⛰️

Utah Pros & Cons

+ PROS
  • Lower income tax: 4.55% flat (vs ID 5.3%) saves $750 on $100k
  • Lower property tax: 0.48% (vs ID 0.50%) saves $50-$200/year
  • Bigger job market: Salt Lake 2.8M metro (vs Boise 765K, 3.7x larger)
  • Tech hub: Silicon Slopes (Adobe, Qualtrics, growing startup scene)
  • Outdoor recreation: World-class skiing (Park City, Alta, Snowbird)
− CONS
  • Higher sales tax: 7.19% (vs ID 6.03%) costs $116 more/year
  • More expensive: Salt Lake median $570k (vs Boise $485k, 15% cheaper)
  • Worse air quality: Salt Lake winter inversions trap pollution
  • Liquor laws: Utah has restrictive alcohol laws
  • Less diverse: 78% white, Mormon culture dominance
🥔

Idaho Pros & Cons

+ PROS
  • Lower sales tax: 6.03% (vs UT 7.19%) saves $116/year
  • Cheaper housing: Boise median $485k (vs Salt Lake $570k, 15% cheaper)
  • Better air quality: No inversion issues like Salt Lake
  • More relaxed culture: Less dominant religious influence
  • Growing tech scene: Boise boom (Micron, HP, startups)
− CONS
  • Higher income tax: 5.3% flat (vs UT 4.55%) costs $750 on $100k
  • Higher property tax: 0.50% (vs UT 0.48%) costs $50-$200 more/year
  • Smaller job market: Boise 765K metro (vs Salt Lake 2.8M, 3.7x smaller)
  • Population boom: Housing crisis, rapid growth, infrastructure strain
  • Hot summers: 100°F+ regularly (vs Salt Lake similar)
FAQ

Frequently Asked Questions

How much will I save living in Utah vs Idaho?

On $100,000 income, Utah saves $750/year in income tax (UT 4.55% vs ID 5.3%). UT also has slightly lower property tax (0.48% vs ID 0.50%). On a $500k home, UT pays $2,400/year vs ID $2,500/year—difference of $100/year. However, ID has lower sales tax (6.03% vs UT 7.19%). Net savings: $734/year in Utah. Over 10 years: $7,340.

Salt Lake City vs Boise: which city is better for tech workers?

Salt Lake wins for career: Silicon Slopes (Adobe, Qualtrics, Domo), larger job market (2.8M vs 765K), more networking, higher salaries. Utah also has lower taxes ($734/year savings at $100k). Boise wins for: cheaper housing (15% cheaper), better air quality (no inversions), more relaxed culture, less crowded. Both see explosive California refugee influx. Choose SLC for career max. Choose Boise for affordability.

Is there significant migration between Utah and Idaho?

Yes, but more ID → UT migration surprisingly. In 2023, 4,872 people moved ID → UT and 3,847 moved UT → ID (net: UT gained 1,025). Migration drivers ID → UT: better jobs (Silicon Slopes), lower taxes ($734/year), world-class skiing. Migration drivers UT → ID: cheaper housing (Boise 15% cheaper), better air quality, escaping Mormon culture. Both states primarily gain residents from California.

Which state is better for families?

Utah wins for families: better schools (UT #10 vs ID #24), larger job market, lower taxes ($734/year savings), world-class skiing. However, Utah has higher cost of living (15% more expensive) and air quality issues (winter inversions). Idaho wins for: cheaper housing, better air quality, more relaxed culture. Choose UT for career/schools. Choose ID for affordability.
From the brief
NL27%new 2027 rate, down from 30%
DK65.4kkr/mo threshold, cut from 78k
MT1940snon-dom regime unchanged since
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