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Californiacorporate tax inIdaho
Moderate — top rate 5–7.99%

Idaho

Top Rate
5.695%
Rate Structure
Flat
Franchise Tax
No
Gross Receipts Tax
No
S-Corp Recognized
Yes

Corporate Income Tax Rate at a Glance

Idaho's top corporate income tax rate is 5.695%, applied as a flat rate. This places Idaho in the "Moderate (5–7.99%)" tier among U.S. states.

Rate Structure (Flat vs. Graduated)

5.695% flat rate effective 2024 (reduced from 5.8%). Minimum tax of $20 applies.

S-Corp & Pass-Through Treatment

Idaho recognizes federal S-corp election. Pass-through entities may elect entity-level taxation under Idaho's Affected Business Entity (ABE) election at 5.695%.

Official State Revenue Department

For current corporate tax rules in Idaho, consult the state's official source at https://tax.idaho.gov/. Rates and rules change annually — verify with a qualified tax professional before taking any action.

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Related guides

Idaho Department of Revenue: https://tax.idaho.gov/
Law last updated: 2024Row last reviewed: Apr 26, 2026

Corporate income tax rates change frequently as states enact reform packages and phase-down schedules. Always verify current rates with the state's department of revenue and your tax advisor before making business decisions. This information is for educational purposes only and is not tax or legal advice.