"Build Up Mississippi Act"; create.

Replaced the state income tax with a graduated system that reduces rates from 5% to 3% by 2030, with an additional reduction mechanism tied to budget surplus conditions starting in 2031.

Created new special funds including a Budget Stabilization Fund, Maintenance and Capacity Projects Fund, and Strategic Multi-Modal Investments Fund.

Revised distribution formulas for gasoline and special fuel tax revenues, allocating portions to new funds and adjusting county distribution percentages.

Increased gasoline and special fuel excise taxes from 18 cents to 21-27 cents per gallon effective July 1, 2025, with indexed increases every two years thereafter.

Imposed a 5% sales tax on retail food sales not purchased with food stamps, effective July 1, 2025, replacing the previous 4.5% rate.

Authorized municipalities with populations of 150,000+ to impose optional local sales taxes on specific business activities and retail food sales.

Authorized counties to impose optional sales taxes on business activities outside municipal boundaries.

Established a new tier in the Mississippi Public Employees' Retirement System with defined benefit and defined contribution components for new members after March 1, 2026.

Added new definitions for 'Hotel', 'Motel', and 'Restaurant' with specific criteria for local sales tax purposes.

Required municipalities imposing new local sales taxes to hold elections with a three-fifths voter approval threshold and establish oversight commissions.