Illinois vs Arizona
A $100,000 income in Illinois is worth
$100,000
at national prices · RPP 100.0BEA RPP SARPP. Source: BEA Regional Price Parities · SARPP · 2024 vintage · released February 19, 2026 · Official API
In Arizona, the same income is worth
$99,305
at national prices · RPP 100.7BEA RPP SARPP. Source: BEA Regional Price Parities · SARPP · 2024 vintage · released February 19, 2026 · Official API
$100,000 has $695 more purchasing power in Illinois.
Decision shortcut
To match $100,000 in Illinois, you would need about $100,700in Arizona.
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Where the difference comes from
Price level by component, 100 = US average. Higher means more expensive.
| Component | Illinois | Arizona | Difference |
|---|---|---|---|
| All items | 100.0 | 100.7 | +0.7% |
| Housing rents | 93.9 | 106.8 | +13.7% |
| Goods | 103.8 | 95.4 | −8.1% |
| Utilities | 85.0 | 92.3 | +8.6% |
| Other services | 100.2 | 102.8 | +2.6% |
BEA Regional Price Parities · SARPP · 2024 · rel. February 19, 2026 · Official API
Housing reality check
ACS median gross rent, home value, and real estate taxes paid — statewide context beyond the index.
US Census ACS 5-Year Estimates · ACS5 · 2024 · rel. December 2025 · Official API
Tax at a glance
Hand-curated, tax year 2026 · verified 2026-07-20
Top marginal and average combined rates do not estimate a household's total tax liability.
| Tax | Illinois | Arizona |
|---|---|---|
| Income tax (top rate) | 4.95% | 2.50% |
| Sales tax (combined avg) | 8.96% | 8.52% |
Tax Foundation (income & sales) · Tax · 2026 · rel. tax year 2026 · Manually maintained · verified 2026-07-20
Illinois vs Arizona: the read
The bottom line
Compare a $100,000 income in Illinois and Arizona: its purchasing power is $100,000 and $99,305, respectively, in national-average terms — a loss of $695. Illinois is the cheaper of the two, running at 100 on the price index versus 100.7.
Where the difference comes from
The widest gap is housing rents: Illinois sits at 93.9 and Arizona at 106.8 (100 = national). Illinois has the edge there, and it's the main reason the two states diverge.
Housing
Median rent runs $1,274 in Illinois against $1,543 in Arizona, and the typical home $263,300 versus $394,500. Illinois is the more affordable place to buy.
Taxes
On tax, Illinois has 4.95% top income tax and a combined sales tax of 8.96%; Arizona has 2.50% top income tax and 8.52%. Those headline rates are useful screening facts, but they do not calculate either household's total liability.
Full profiles: Illinois ·Arizona. Every figure here is sourced on the pages linked above.
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