Provide income tax deduction up to 150% for charitable donations

SB 157 would have allowed Montana taxpayers who itemize deductions on their federal tax returns to deduct up to 150% of their charitable contributions from their Montana state income tax. This provision, added to Montana's tax code, would have directly affected individual filers who itemize federal deductions and make charitable gifts. The bill proposed a specific mechanism where the state deduction amount would be calculated as 150% of the federal charitable deduction amount claimed. However, the bill was tabled in committee and later died in the legislative process in May 2025, so it did not become law.