Various tax matters.

Makes certain changes to the qualification requirements for the: (1) deduction for individuals who are at least 65 years of age; and (2) additional credit for certain homesteads. Increases the amount of the supplemental homestead deduction for property taxes first due and payable in 2024 and 2025. Provides that if a taxpayer presents an appraisal to the county property tax assessment board of appeals (county board) that meets specified requirements, the appraisal is presumed to be correct. Provides that if the county board disagrees with the taxpayer's appraisal, the county board may seek review of the appraisal or obtain an independent appraisal. Provides that after the assignment of value, the parties shall retain their rights to appeal to the Indiana board of tax review. Provides that, notwithstanding any increase in assessed value of property from the previous assessment date, the total amount of operating referendum tax that may be levied by a school corporation for taxes first due and payable in 2024 may not increase by more than 3% over the maximum operating referendum tax that could be levied by the school corporation in the previous year. Provides a calculation to be used in determining the maximum levy growth quotient in 2024 and 2025. Modifies, through December 31, 2024, the threshold amounts used for determining whether a political subdivision's project is a controlled project and whether the petition and remonstrance process or the referendum process applies based on the political subdivision's total debt service tax rate, but excludes certain projects for which a public hearing to issue bonds or enter into a lease has been conducted before July 1, 2023. Creates an exception, through December 31, 2024, to a provision subjecting a controlled project in a political subdivision with a total debt service rate of $0.80 per $100 of assessed valuation to the referendum process, if: (1) the political subdivision submits a request to the department of local government finance (DLGF) seeking a waiver of the provision; (2) the proposed controlled project is a response to a maintenance emergency; and (3) the DLGF determines that the maintenance emergency is sufficient to waive the provision. Amends an exclusion from the definition of "controlled project" for projects required by a court order. Authorizes a county fiscal body to adopt an ordinance to provide property tax relief for property tax liability attributable to homesteads for qualified individuals. Provides that a county may adopt a resolution to require a local income tax supplemental distribution to first be distributed and used to lower the county's levy freeze tax rate. Requires the DLGF to approve a county's request to decrease its levy freeze tax rate if the DLGF finds that the lower rate, in addition to the supplemental distribution amount determined under the resolution adopted by the county, would fund the levy freeze dollar amount. Requires the department of state revenue (department) to annually provide each resident individual taxpayer who paid adjusted gross income taxes in the immediately previous taxable year a taxpayer receipt statement in an electronic format explaining how the individual taxpayer's taxes are being used. Requires the department, in consultation with the budget agency, to create and administer an Internet web page on which individual taxpayers may access an estimate of the allocation of their adjusted gross income taxes to various expenditure categories for the most recent state fiscal year based on the adjusted gross income taxes paid by the taxpayer. Specifies the information that must be provided on the web page. Defines "maintenance emergency". Makes conforming changes.