AZ HB4030

Imposes a four-year moratorium (July 1, 2026 through June 30, 2030) prohibiting Arizona municipalities and counties from increasing fees, transaction privilege taxes, or utility rates above levels set in their 2025-2026 fiscal year budgets.

Allows municipalities a limited exception for utility rate increases only if they have not raised rates by a cumulative 12% or more in the preceding four fiscal years, capped at the rate of inflation.

Permits tax increases only if approved by at least 60% of voters at a consolidated election in an even-numbered year; exempts ad valorem taxes for bonded debt, special assessments, and school district support.

Prohibits local governments from circumventing the moratorium by renaming, reclassifying, or restructuring charges, or by adopting fee schedules during 2025-2026 specifically to avoid the restrictions.

Provides enforcement through the state's existing enforcement mechanism (section 41-194.01) and allows aggrieved taxpayers, residents, businesses, or property owners to sue for declaratory or injunctive relief with attorney fees awarded to prevailing plaintiffs.