Montana Tax Refund July 2025. As soon as new 2025 relevant tax year data has been released, the tool will the updated accordingly. Montana began sending payments to eligible residents in early july, and most income tax rebates will be sent by august 31, 2023, according to the montana department of.
Major changes are coming to montana’s income tax system beginning in tax year 2024, including changes to filing statuses, tax brackets, and the calculation of montana taxable. No further claims can be accepted for tax year 2023.