A municipality must amend its budget any time the amounts of appropriations stated in the budget change or if the purpose for which the money will be used changes. A two-thirds vote of the entire membership of the governing body is required to amend a budget, and the municipality must publish a Class 1 notice of the amendment within 15 days after amending the budget. Wisconsin Stat. § 65.90(5)(a). (rev. 11/20)