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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 Income tax verified October 2026 Tax Comparison 2026
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OVERVIEW
Utah has a flat 4.45% income tax, while Idaho charges a flat 5.3% rate above a small zero-rate bracket (cut from 5.695% for 2025). Living in Idaho saves $265/year in income tax on $100k income compared to Utah, while Utah is cheaper above roughly $131k. 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, Idaho's tax bill is lower below roughly $131k, with Utah offering 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
4.45%
Flat Rate

Flat 4.45% on all income

🥔
COUNTRY B
Idaho
TAX RATE
5.3%
Flat Rate

Flat 5.3% (cut from 5.695% for 2025)

TYPICAL ANNUAL DIFFERENCE
Moving from Idaho → Utah at $100,000
$265

That's $22/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
$1,672
$1,535
ID saves $137
$1,370
$100,000
$4,450
$4,185
ID saves $265
$2,650
$200,000
$8,900
$9,485
UT saves $585
$5,850
$500,000
$22,250
$25,385
UT saves $3,135
$31,350
💡

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⛰️

Utah Pros & Cons

+ PROS
  • Lower headline rate: 4.45% flat (vs ID 5.3%); lower income tax above ~$131k (saves $585 at $200k)
  • 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 headline rate: 5.3% flat (vs UT 4.45%); costs $585 more at $200k (but $265 less at $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, Idaho costs $265/year less in income tax than Utah (ID $4,185 vs UT $4,450), even though Utah's headline rate is lower (4.45% vs 5.3%), because Idaho taxes only income above its zero-rate bracket. UT 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—a $100/year difference. ID also has lower sales tax (6.03% vs UT 7.19%, about $116/year). Net: Idaho saves roughly $281/year at $100k. Over 10 years: about $2,810. Above roughly $131k of income Utah's income tax is lower.

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. Tax bills favour Idaho at $100k (Idaho is about $281/year cheaper overall 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), 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, 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.
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