Income tax.

HB 233 establishes Wyoming's first state income tax system. It imposes a 0% tax on the first $200,000 of taxable income and a 4% tax on amounts above that threshold. The bill creates administrative rules for the Department of Revenue to collect the tax, requiring taxpayers with over $200,000 in income to file annual returns (matching federal filing deadlines), while exempting those with $200,000 or less. Key provisions include confidentiality protections for tax returns, apportionment rules for multi-state income, and enforcement mechanisms for non-compliance. This bill, which died in committee in 2019, would have directly affected Wyoming residents and businesses earning taxable income.