California’s Gas Tax Replacement: The Controversial Per-Mile Use Fee Initiative

California’s EV Transition and Tax Implications

One of the significant advantages of purchasing an electric vehicle (EV) is the potential for savings by eliminating the need for traditional refueling at gas stations. Additionally, EVs present an eco-friendlier alternative, contributing to environmental sustainability. However, transitioning to electric vehicles introduces a financial side effect: reduced tax revenue from gas sales.

In California, a gas tax is imposed every time a vehicle is filled up at the pump. However, as more Californians transition to EVs, the state faces dwindling tax revenues, as reported by ABC 7.

To address these declining revenues, the California Department of Transportation (Caltrans) is considering replacing the gas tax with a mileage-based tax for all vehicles. Consequently, Caltrans has introduced a pilot program dubbed “California Road Charge” to evaluate this new taxation method.

How Will California Track Mileage?

Participants in the Road Charge pilot program can opt for a tracking device to be installed in their vehicle. Alternatively, they can provide a snapshot of their odometer reading as a means of reporting their mileage.

Financial Implications

You may be curious about the financial stakes involved. According to Caltrans spokesperson Lauren Prehoda, the potential loss of revenue is substantial.

“On average, Californians pay about $300 a year in state gas taxes,” Prehoda noted. “EVs have a $100 [annual] registration fee… that’s a $200 million a year loss.” While $200 million annually is significant, compared to the overall budget, it might be less alarming when viewed in context.


2023 Tesla Model Y
2023 Tesla Model Y Web

Currently, there are approximately 1.2 million electric and hybrid vehicles registered in California, while over 35 million vehicles total have been registered as of 2023. Therefore, despite the $200 million annual loss from EV-related changes, substantial revenue continues to be generated from the majority of internal combustion engine (ICE) vehicles, which number about 33.8 million. This revenue is essential to cover the annual $8 billion to $9 billion Caltrans claims it requires for road maintenance, although the remaining margins are tight. Hence, it is clear why Caltrans is seeking alternative options.

Future Considerations

Notably, the number of EVs in California is expected to keep increasing, especially as the state advances towards its planned ban on new ICE vehicle sales. However, implementing a mileage-based tax may prove challenging for California lawmakers who are cautious about alienating constituents already burdened with high taxes.

Other states, such as Texas, have adopted different approaches, like imposing a registration fee specifically for EV owners to help compensate for lost gas tax revenue. Although California EV owners might express dissatisfaction with such measures, they might find it less objectionable than having their mileage monitored by the state.

In the interim, the California Road Charger pilot program is providing incentives of up to $400 for participants willing to engage in the experiment and allow their mileage to be tracked.


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