H 589 Idaho House · 68th Legislature, 2nd Regular Session (2026)

TAXATION – Amends, repeals, and adds to existing law to revise provisions regarding the rate of income taxes.

This bill revises Idaho's individual and corporate income tax rates. It lowers the individual income tax rate from 5.695% to 5.3% for taxable income over $2,500 (or $5,000 for joint returns), and reduces the corporate tax rate from 7.6% to 7.4% for taxable years starting in 2012. The bill also adds an automatic inflation adjustment mechanism: the state tax commission will annually update tax thresholds using the Consumer Price Index to prevent inflation from increasing tax burdens. These changes directly affect all Idaho residents and businesses filing income tax returns under state law.
Bill status in committee 1 of 4 stages cleared
Introduction
Feb 2026
Committee Review
Floor Vote
Governor
Introduced Feb 4, 2026 Last action Feb 5, 2026
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Full legislative history

Actions timeline

Total actions
2
Key actions
0
Committee
0
Feb 5, 2026
Introduced
Reported Printed; Filed in the Office of the Chief Clerk
lower
Feb 4, 2026
Introduced
Introduced, read first time, referred to JRA for Printing
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Steve Berch
Steve Berch
DDemocratic
ID
15A