US State Tax Profile · 2026

ID Idaho Tax Rates

Flat income tax; growing tech hub in Boise. Compare income, corporate, and sales tax rates for Idaho against federal rates and other US states.

Income Tax
5.695%
flat rate
Corporate Tax
5.8%
state rate
Sales Tax (State)
6%
before local additions
Combined Sales Tax
6.02%
avg incl. local taxes
Capital Gains
5.695%
state rate
Federal Corp Rate
21%
applies in all states

Idaho vs Federal Tax Comparison

Tax TypeID State RateFederal RateNotes
Personal Income Tax 5.695% flat Federal: 10–37% Combined fed+state applies
Corporate Income Tax 5.8% Federal: 21% 5.8% flat corporate rate
State Sales Tax 6% No federal sales tax Combined avg: 6.02%
Capital Gains Tax 5.695% Federal: 0–20% Same as income tax

About Idaho Taxes

Key characteristics

Flat income tax; growing tech hub in Boise.

Idaho levies income tax at rates from 5.695% flat. The flat rate structure means all taxpayers pay the same percentage, providing simplicity and predictability.

Corporate activity in Idaho faces a 5.8% state corporate tax rate. 5.8% flat corporate rate. Combined with the 21% federal corporate rate, businesses should plan accordingly.

Calculate Your Net Salary in Idaho

See federal + ID state tax deductions, Social Security, Medicare, and take-home pay

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Frequently Asked Questions — Idaho Taxes

What is Idaho's state income tax rate?

Idaho uses a flat 5.695% income tax rate — meaning all taxable income is taxed at the same rate regardless of earnings level. This simplifies filing and is generally favorable for higher earners compared to progressive bracket states.

What is the corporate income tax rate in Idaho?

Idaho imposes a corporate income tax at 5.8%. 5.8% flat corporate rate. Businesses should also account for federal corporate tax at 21% on top of the state rate.

What is the sales tax rate in Idaho?

Idaho has a state sales tax of 6%. When local city and county taxes are included, the average combined rate reaches 6.02%. Rates vary by locality so check the specific municipality for accurate figures.

How does Idaho compare to neighboring states for taxes?

Idaho's overall tax burden ranks near average among US states. The state levies income tax at up to 5.695%. For individuals evaluating relocation or remote work, comparing the full picture — income, sales, and property taxes — is essential. Use our US Salary Calculator to estimate your net income in Idaho.

Are there any special tax incentives or exemptions in Idaho?

Idaho offers notable tax characteristics: Flat income tax; growing tech hub in Boise. Businesses and individuals should consult a qualified tax advisor to understand eligibility for available credits, deductions, and incentives specific to Idaho.

Cost of Living in Idaho

Tax rates are only part of the picture — explore city-level cost of living data:

Boise Meridian Nampa

Compare Other US States

Explore state tax profiles across the US:

All 50 States Overview California Texas Florida New York Washington
Disclaimer: Tax rates shown are for 2026 and are sourced from Tax Foundation and IRS data. Rates change frequently. Always consult a qualified tax professional or the relevant state Department of Revenue before making financial decisions.