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HEAD-TO-HEAD TAX COMPARISON · 2026

COUNTRY A Arizona VS COUNTRY B Indiana

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

Daniel · CountryTaxCalc Updated August 2026 Tax Comparison 2026
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OVERVIEW
Arizona's 2.5% flat income tax is the lowest among all 41 US states that levy an income tax, and it beats Indiana's 2.95% flat rate at every income level: $152/year cheaper at $50,000, $377/year cheaper at $100,000, and $2,177/year cheaper at $500,000, using state-only figures. Unlike the reversal seen in some Indiana comparisons, adding Indiana's mandatory county tax only widens Arizona's advantage here rather than closing it. Every one of Indiana's 92 counties levies an additional 0.5% to 3.38% income tax with no $0 option, while Arizona has zero local or county income tax anywhere in the state. Using Indiana's own statewide average county rate (about 2.74%), the combined state-plus-county bill at $100,000 rises to roughly $4,774 — more than double Arizona's $2,098. Even Indiana's lowest-tax county (LaGrange, at 0.5%) still leaves Indiana pricier than Arizona at that income. Property tax also favors Arizona, with a lower average effective rate (~0.48%) than Indiana (~0.76%), plus a property tax valuation freeze for homeowners 65 and older. On retirement income, both states fully exempt Social Security; Arizona taxes pension and 401(k)/IRA withdrawals at the flat 2.5% rate with no special deduction, while Indiana gives filers 65+ a modest $4,000 deduction on non-Social-Security retirement income before taxing the remainder at the state rate plus county tax.
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
Arizona
TAX RATE
2.5%
Flat Tax

Flat 2.5% state rate — the lowest flat tax among all 41 US states with an income tax; no local or county income tax anywhere

🏎️
COUNTRY B
Indiana
TAX RATE
2.95%
Flat Tax + Mandatory County Tax

Flat 2.95% state rate — but every one of Indiana's 92 counties also levies a mandatory 0.5-3.38% county tax

TYPICAL ANNUAL DIFFERENCE
Moving from Indiana → Arizona at $100,000
$377

That's $31/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
🌵 AZ TAX
🏎️ IN TAX
SAVINGS
10-YEAR
$50,000
$848
$1,000
-$152
-$1,520
$75,000
$1,473
$1,738
-$265
-$2,650
$100,000
$2,098
$2,475
-$377
-$3,770
$150,000
$3,348
$3,950
-$602
-$6,020
$250,000
$5,848
$6,900
-$1,052
-$10,520
$500,000
$12,098
$14,275
-$2,177
-$21,770
💡

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🌵

Arizona Pros & Cons

+ PROS
  • Lowest flat state income tax rate among all 41 income-tax states (2.5%), beating Indiana's state-only rate at every income level shown — from $152/year at $50,000 to $2,177/year at $500,000
  • Zero local or county income tax anywhere in the state — unlike Indiana, where all 92 counties add a mandatory 0.5%-3.38% tax on top of the state rate, with no $0 option
  • Lower average property tax (~0.48%) than Indiana (~0.76%), plus a property valuation freeze program for homeowners 65+ with limited income
  • Social Security fully exempt, and pension/401(k)/IRA withdrawals taxed at just the flat 2.5% rate — among the lowest effective retirement-income rates nationally
− CONS
  • Extreme summer heat (Phoenix regularly exceeds 110°F for three-plus months) and ongoing water-scarcity concerns tied to Colorado River allocations
  • No special retirement-income deduction — Indiana's $4,000 age-65+ deduction gives it a marginal edge for retirees with smaller non-Social-Security withdrawals
  • Combined state-plus-local sales tax can reach 11.2% in some cities (Phoenix ~8.6%), higher than Indiana's flat 7% statewide rate
  • Semiconductor-heavy job market (Intel, TSMC) is narrower than Indiana's more diversified manufacturing and pharmaceutical base (Eli Lilly, steel, auto)
🏎️

Indiana Pros & Cons

+ PROS
  • Among the lowest flat state-only tax rates nationally (2.95%, cut from 3.05% in 2023) — even though it still trails Arizona's 2.5% headline rate
  • Low-county-tax areas like LaGrange County (0.5%) keep the combined state+county rate close to Arizona's, minimizing the real-world gap for residents who choose carefully
  • No estate or inheritance tax, and Social Security is fully exempt from state tax
  • Strong pharmaceutical and manufacturing employment base (Eli Lilly, steel, automotive) at a lower cost of living than Phoenix or Scottsdale
− CONS
  • Every one of Indiana's 92 counties levies a mandatory income tax (0.5%-3.38%) on top of the state rate — there's no way to match Arizona's zero-local-tax status anywhere in the state
  • Using Indiana's own statewide average county rate (~2.74%), the real combined bill at $100,000 (~$4,774) is more than double Arizona's $2,098
  • Pulaski County residents pay the highest combined rate in the state (6.33%), over 2.5 times Arizona's flat 2.5% rate; Marion County (Indianapolis) is more moderate at 4.97% combined, still roughly double Arizona's rate
  • Higher average property tax (~0.76%) than Arizona (~0.48%), with no equivalent senior valuation-freeze program
FAQ

Frequently Asked Questions

Is Arizona or Indiana cheaper for state income tax?

Comparing state rates only, Arizona is cheaper at every income level shown: $152/year at $50,000, growing to $2,177/year at $500,000. Arizona's 2.5% flat rate is the lowest among all 41 US states with an income tax, beating Indiana's 2.95% flat rate outright — and unlike some Indiana comparisons, adding Indiana's county tax only widens Arizona's lead further rather than closing it.

Does Indiana's mandatory county tax change the answer?

It makes Arizona's advantage bigger, not smaller. Every Indiana county levies its own income tax (0.5% in LaGrange County up to 3.38% in Pulaski County, Indiana's highest-tax county) with no $0 option. Using Indiana's own average county rate (~2.74%), the combined state+county bill at $100,000 rises to about $4,774 — more than double Arizona's $2,098.

Is there any Indiana county that beats Arizona once county tax is included?

No. Even Indiana's lowest-tax county, LaGrange (0.5%), pushes the combined state+county rate to about 3.45% on taxable income, which still costs more than Arizona's flat 2.5% at every income level tested. Arizona's rate advantage plus its zero-local-tax status make it consistently cheaper than any Indiana county for state-level income tax.

Which state has lower property tax, Arizona or Indiana?

Arizona has the lower average effective property tax rate at roughly 0.48%, compared to Indiana's roughly 0.76%. On a $400,000 home, that's about $1,920/year in Arizona versus $3,040/year in Indiana — a $1,120/year difference in Arizona's favor, on top of its income-tax advantage.

Does either state tax Social Security or retirement income?

Both states fully exempt Social Security. Beyond that, Arizona taxes pension and 401(k)/IRA withdrawals at the flat 2.5% rate with no additional deduction, while Indiana offers filers 65+ a $4,000 deduction on non-Social-Security retirement income before taxing the rest at the state rate plus county tax. For most retirees, Arizona's lower flat rate still wins out even without a dedicated retirement deduction.

How much would I save moving from Indiana to Arizona?

At $100,000 income, moving from Indiana to Arizona would save about $377/year comparing state rates alone. If you currently live in Pulaski County, Indiana's highest-tax county (3.38%), the real savings are much larger — closer to $3,213/year once Indiana's county tax is factored in (state $2,475 + county $2,836 = $5,311 total, vs Arizona's $2,098). Marion County (Indianapolis, 2.02%) offers a more moderate but still real savings gap of about $2,072/year ($4,170 total vs Arizona's $2,098).

Why is Arizona's income tax rate so low?

Arizona dramatically cut its top income tax rate from 4.5% to a flat 2.5% in 2023, one of the largest state tax cuts in recent US history. This made Arizona's rate the lowest among all 41 states that levy an income tax, and it has helped drive continued population growth from higher-tax states like California.

Is Phoenix or Indianapolis a better place to work?

Phoenix has a larger, faster-growing job market anchored by semiconductors (Intel, TSMC's $40 billion fab), aerospace, and tourism, with strong population growth over the past decade. Indianapolis offers a steadier, more diversified base in pharmaceuticals (Eli Lilly), manufacturing, and logistics at a lower cost of living. Phoenix generally offers higher salary ceilings, which can compound its tax advantage over Indiana.
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