Arizona Voters Will Weigh Mileage Tax Ban in 2026
A constitutional amendment on the November 2026 ballot could block the state from taxing or monitoring vehicle mileage.
Updated on Oct. 11, 2026 in Financial Planning
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Should the state be prohibited from tracking vehicle mileage for road maintenance and emissions goals?
In November 2026, Arizona voters will decide on Proposition 141, which proposes a constitutional amendment to ban state and local governments from imposing taxes or fees based on vehicle miles traveled. The measure would also bar the government from monitoring or limiting mileage without consent, excluding government and certain commercial vehicles.
Why it matters
The debate centers on the long-term sustainability of road maintenance funding, as inflation-adjusted gas tax revenue is projected to shrink by over 50% during the next 20 years. Proponents argue the ban prevents government surveillance and new taxes, while opponents warn it eliminates a potential future mechanism to fill a projected $162 billion transportation funding deficit.
Arizona currently collects 18 cents per gallon via the state gas tax, which is failing to keep pace with a projected $162 billion revenue deficit for infrastructure through 2050. Proponents of the ban seek to avoid the costs seen in other states, where road usage charges vary by jurisdiction.
The players
Arizona State Legislature
The governing body responsible for drafting state laws and managing the long-term transportation funding plan.
RUC America
A consortium of state agencies that conducts research on road use charges and mileage-based taxation.
The details
The measure would explicitly prevent Arizona from adopting road usage charge systems similar to those currently operating in states like Oregon, Utah, or Hawaii. By amending the state constitution, it would permanently remove the ability for authorities to link vehicle registration fees or tax assessments to mileage tracking. This comes as Arizona’s transportation plan through 2050 faces a massive shortfall, threatening the traditional funding model supported by fuel consumption.
Timeline
The Arizona Senate passed Proposition 141 in 2025.
Arizona voters will cast their ballots on the measure in November 2026.
Gas tax revenue is projected to decline significantly over the next 20 years.
Arizona's current long-term transportation plan runs through 2050.
Money Landscape
Proposition 141 represents a pre-emptive legislative response to the shifting landscape of infrastructure funding as fuel efficiency improves. It follows a trend where states are re-evaluating how to collect road maintenance revenue in a future where traditional gas tax collections are in steady decline.
The passage of this measure would eliminate the possibility of future mileage-based taxes on personal vehicles, potentially stabilizing a portion of your long-term vehicle ownership costs. Consult with a tax professional to understand how shifts in transportation funding might eventually impact road maintenance budgets in your specific area.
The takeaway
The proposed ban would lock in the current funding structure while prohibiting future mileage-based assessments for Arizona drivers. Residents should monitor the upcoming November 2026 election cycle for discussions on how the state plans to reconcile the $162 billion deficit if this revenue source is removed.
Further reading
Learn more about how state-level policy changes affect long-term budget projections in our Financial Planning section.
Source note: This article includes information reported by AZ Central.
Live Poll
Should the state be prohibited from tracking vehicle mileage for road maintenance and emissions goals?
