Addressing the Funding Gap: Electric Vehicles and Road Taxes
As electric vehicles (EVs) gain popularity and traditional vehicles become more fuel-efficient, a significant challenge emerges: funding for transportation infrastructure. Historically, gasoline taxes have supported the Highway Trust Fund, but with fewer drivers buying gasoline, this revenue stream is dwindling.
A bipartisan federal proposal suggests imposing a flat annual fee on EV owners, starting at $130 and increasing over time, with reduced fees for plug-in hybrids. While this idea aims to address funding, its design raises concerns.
The core issue is the fee’s structure. Ideally, road usage fees should correlate with miles driven, not vehicle ownership. A household driving an electric vehicle 3,000 miles annually contributes less to road wear than one driving 20,000 miles, yet a flat fee treats them equally. This approach resembles a registration surcharge rather than a usage fee.
A vehicle miles traveled (VMT) tax emerges as a more equitable solution. Research from the MIT Center for Energy and Environmental Policy Research suggests that replacing the federal gasoline tax with a VMT tax could maintain current revenue levels. The proposal: tax miles driven instead of gallons of gasoline, with an estimated rate of 0.89 cents per mile.
Unlike a flat EV tax, a VMT tax differentiates between drivers based on actual road usage, aligning with the goals of organizations such as the Bipartisan Policy Center and the Competitive Enterprise Institute.
A flat EV tax does not differentiate between high-mileage and low-mileage drivers — a VMT tax does.
Additionally, flat fees can disproportionately affect EV drivers compared to gasoline vehicle owners. Current data indicates the average federal gasoline tax per vehicle is about $90 annually, whereas a $130 EV fee is 45% higher. Previous proposals even suggested $250 for EVs, exacerbating the disparity.
Gasoline vehicles contribute to road-use externalities like congestion and pollution, costs that EVs do not share. Therefore, policy should not penalize cleaner vehicles with higher fees for identical road use.
Flat EV fees also disproportionately impact low-mileage drivers, including retirees and short-distance commuters. A $135 fee for a driver covering 3,000 miles equates to 4.5 cents per mile, while for someone driving 15,000 miles, it’s less than 1 cent per mile.
Though often portrayed as disadvantageous for rural drivers, a VMT tax could benefit them. Households with less fuel-efficient vehicles currently pay more per mile in gasoline taxes, but a mileage-based system might reduce their burden. Research indicates that rural and lower-income areas could fare better under this model.
Transitioning to a VMT system involves logistical and privacy considerations. Policymakers must determine how to track mileage — through odometer readings, inspections, or telematics — and establish safeguards against privacy breaches and fraud. Additionally, considerations include whether heavier vehicles should incur higher fees and if commercial trucks require different treatment.
These logistical hurdles should not deter policymakers from pursuing a more effective solution. Vermont is paving the way with its current $89 annual EV fee, but lawmakers are considering a per-mile charge.
Critics often question how mileage would be measured. Vermont’s approach uses odometer readings, potentially through its vehicle inspection system, rather than continuous tracking. This method ties fees to road usage while minimizing privacy concerns. Although it doesn’t capture out-of-state travel or tourist contributions, it demonstrates the feasibility of overcoming implementation challenges.
Vermont’s experience highlights the need for a broader shift to a mileage-based system as fuel efficiency erodes gas tax revenues. Addressing the shortcomings of an EV-only fee, federal policymakers should take note of Vermont’s initiative and consider a similar path forward.
Original Story at www.wbur.org