Arizona Will Vote on Mileage Tax Ban in November 2026
Arizona voters will decide whether to constitutionally prohibit mileage-based vehicle taxes and travel caps.
Updated on Oct. 6, 2026 in Electric Vehicles
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Should states be permitted to implement taxes based on vehicle miles traveled?
Arizona voters will cast ballots in November 2026 on Proposition 141, a measure that would amend the state constitution to ban taxes or fees based on miles traveled. The proposed constitutional amendment would also explicitly forbid future state laws that limit the number of miles a person can travel in a motor vehicle.
Why it matters
Proponents of the measure raise concerns regarding the potential for mileage-based taxation to infringe on privacy and restrict personal freedom of movement. Conversely, opponents argue that the ban would eliminate critical legislative tools needed to fund future road maintenance and infrastructure projects.
Arizona currently maintains a state gas tax of 18 cents per gallon, a rate that has remained unchanged since 1990. Four states currently operate active mileage-based tax programs for passenger vehicles.
The players
Arizona Legislature
This is the state legislative body that authorized the placement of Proposition 141 on the ballot.
The details
Proposition 141, which was referred to the ballot by the Arizona Legislature via Senate Concurrent Resolution 1004 in 2025, would add Section 26 to Article IX of the Arizona Constitution. The measure effectively prevents the implementation of mileage-based monitoring or fees, setting a clear constitutional boundary against these revenue mechanisms.
Timeline
The state gas tax was last raised in 1990.
The Legislature referred the measure to the ballot in 2025.
Arizona voters will cast ballots on Proposition 141 in November 2026.
Roadmap
As states navigate the declining viability of fuel taxes, Arizona's push to constitutionally ban mileage fees represents a significant divergence from the trend of adopting user-based road funding. This ballot measure contrasts with the approach in states like Oregon, Utah, Virginia, and Hawaii, which have already implemented active mileage tax programs.
If the measure passes in 2026, Arizona drivers will be constitutionally protected from future per-mile road usage fees and state-mandated driving caps. This creates long-term certainty regarding personal vehicle costs but may force the state to find alternative funding sources to maintain aging road infrastructure.
The takeaway
Voters face a choice between preserving their current privacy and tax structure versus ensuring the state has new financial tools for transportation projects. Residents should track how the lack of gas tax adjustments since 1990 influences the debate on future road funding.
Further reading
For more information on the evolving policies surrounding road funding, visit the Electric Vehicles section.
Source note: This article includes information reported by KTAR.
Live Poll
Should states be permitted to implement taxes based on vehicle miles traveled?
