Washington vs Idaho

Annual income in state A

State A

State B

A $100,000 income in Washington is worth

$93,458

at national prices · RPP 107.0BEA RPP SARPP. Source: BEA Regional Price Parities · SARPP · 2024 vintage · released February 19, 2026 · Official API

In Idaho, the same income is worth

$104,712

at national prices · RPP 95.5BEA RPP SARPP. Source: BEA Regional Price Parities · SARPP · 2024 vintage · released February 19, 2026 · Official API

$100,000 has $11,254 more purchasing power in Idaho.

Decision shortcut

To match $100,000 in Washington, you would need about $89,252in Idaho.

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Show the math

adjusted = income ÷ (RPP ÷ 100)

Washington: $100,000 ÷ (107.0 ÷ 100) = $93,458

Idaho: $100,000 ÷ (95.5 ÷ 100) = $104,712

difference: $104,712 − $93,458 = +$11,254

Where the difference comes from

Price level by component, 100 = US average. Higher means more expensive.

Regional price parity by component for the two states, with the percentage difference.
Component	Washington	Idaho	Difference
All items	107.0	95.5	−10.7%
Housing rents	126.0	90.0	−28.6%
Goods	104.4	96.3	−7.8%
Utilities	92.9	70.4	−24.2%
Other services	103.9	99.0	−4.7%

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.

WashingtonMedian rent$1,760/moMedian home$564,600Median property tax paid$4,556/yr

IdahoMedian rent$1,238/moMedian home$418,600Median property tax paid$2,038/yr

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.

Income and sales tax for the two states.
Tax	Washington	Idaho
Income tax (top rate)	None	5.30%
Sales tax (combined avg)	9.51%	6.03%

Tax Foundation (income & sales) · Tax · 2026 · rel. tax year 2026 · Manually maintained · verified 2026-07-20

Official API Manually maintained2 of 3 metrics sourced from official APIs, 1 manually maintained. How every number is calculated →

Washington vs Idaho: the read

The bottom line

Compare a $100,000 income in Washington and Idaho: its purchasing power is $93,458 and $104,712, respectively, in national-average terms — a gain of $11,254. Idaho is the cheaper of the two, running at 95.5 on the price index versus 107.

Where the difference comes from

The widest gap is housing rents: Washington sits at 126 and Idaho at 90 (100 = national). Idaho has the edge there, and it's the main reason the two states diverge.

Housing

Median rent runs $1,760 in Washington against $1,238 in Idaho, and the typical home $564,600 versus $418,600. Idaho is the more affordable place to buy.

Taxes

On tax, Washington has no wage income tax and a combined sales tax of 9.51%; Idaho has 5.30% top income tax and 6.03%. Those headline rates are useful screening facts, but they do not calculate either household's total liability.

Full profiles: Washington ·Idaho. Every figure here is sourced on the pages linked above.

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