Establishes the northwest Indiana stadium authority (stadium authority) for the purpose of acquiring and financing certain facilities. Sets forth the powers and duties of the stadium authority. Establishes the northwest Indiana stadium board (stadium board) for the purpose of financing, constructing, equipping, operating, and maintaining a capital improvement. Specifies the composition of the stadium board and sets forth the powers and duties of the stadium board, including the issuance of bonds and notes to finance a capital improvement. Amends and adds provisions that apply to the Indiana finance authority. Amends provisions in the Lake County and Porter County food and beverage tax chapter. Amends provisions in the Lake County innkeeper's tax chapter. Authorizes the city of Hammond to impose an admissions tax. Requires amounts collected from the city admissions tax to be distributed to the stadium board or its designee. Authorizes a redevelopment commission of the city of Hammond to establish a professional sports development area in the city designated as the northwest Indiana professional sports development area and tax area. Authorizes the city of Hammond to establish a northwest Indiana stadium development district. Specifies the duties and authorities of the district and the uses of the incremental tax revenue captured in the district. Requires the Indiana Sports Corporation, beginning July 1, 2027, to ensure that 20% of the money received by the Indiana Sports Corporation each biennium is used for events supported by the northwest Indiana stadium authority and that not less than 20% (instead of 30%) of the money received by the Indiana Sports Corporation each biennium is used for events that are conducted outside of both Marion County and Lake County. Requires certain projects to be reviewed by the budget committee before the Indiana department of transportation proceed with contract letting.