Creates the Taxpayers' Fiscal Charter Act. Provides for a discretionary spending freeze for fiscal years 2024 and 2025. Sets forth requirements to increase discretionary spending beginning in fiscal year 2026. Requires any new spending proposed by the General Assembly in addition to existing obligations to be accompanied by a proposed source of revenue to pay for the proposed spending or specified cuts necessary to offset the proposed spending. Prohibits unfunded mandates. Requires the publishing of certain information before voting on or enacting an appropriations bill. Effective immediately.