Maddy summaryThis 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.

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Maddy summaryH 590 replaces Idaho's existing Parental Choice Tax Credit program with a new tax credit system. It establishes a refundable state tax credit of up to $5,000 per eligible student (increasing to $7,500 for students with disabilities) for parents paying qualified education expenses at nonpublic schools, including tuition, textbooks, and transportation. The credit applies to Idaho residents aged 5-18 (or 5-21 for disabled students) who meet income limits (300% of federal poverty level), with priority given to low-income families and prior recipients. Parents must apply annually by January 15-March 15, and the state will issue credits or advance payments by August 30. The bill repeals the previous credit and its advance payment fund while creating new administrative requirements.