Could an EV duty fix the problem of lost revenue from fuel tax?


While some believe only nationwide road pricing can provide the answer, a new report suggests the groundwork is already being laid for a far simpler solution.

The report by automotive PR and communications agency loop shows that the Government could sidestep the unpopular and politically divisive issue of road pricing by introducing a simple per kWh duty on the energy used to recharge electric vehicles.

Thanks to the Electric Vehicles (Smart Charge Points) Regulations, which require all chargers installed since July 2022 to include smart functionality, the infrastructure required to implement an ‘EV duty’ is already being deployed.

“The idea of tracking individual vehicle movements continues to be unpopular, while schemes such as the London Congestion Charge and Singapore’s Electronic Road Pricing show us that any system is also likely to be frighteningly expensive,” said Alex Kefford, loop’s Head of Editorial and author of the report.

“The House of Commons Transport Committee’s report on this subject concluded that they had not seen a viable alternative to telematics-based road pricing, but by running the numbers we’ve discovered that far simpler solutions do exist.”

By analysing existing revenues, the report calculated that at 26p per kWh, electric cars, motorcycles and vans would generate the same income for HM Treasury as the current road fuel duty regime, even if the country was to achieve 100% EV adoption.

That level would also achieve price parity on a tax-per-mile basis, with both combustion engine and electric vehicles paying duty at roughly 5.6p per mile. For a typical EV travelling the national average mileage, that would add only £295 to the cost of a year’s motoring.

Lost fuel duty revenue

“The idea of an EV duty is unlikely to be welcomed by anyone driving an electric car. However, the Government has already signalled the end for the current favourable regime by announcing that EVs will have to start paying VED come 2025. Soon their attention will turn to recovering lost fuel duty revenue. That this problem should arise now, as EV adoption is at its highest, should be a surprise to no-one.”

The report also shows that the Treasury could afford to replace the complex array of Vehicle Excise Duty bands for vehicles over six years old with a simple flat rate, mirroring that for new vehicles, without jeopardising current revenue levels.

Together, VED (‘road tax’) and Road Fuel Duty currently raise £32 billion a year for the Exchequer – its lowest level in real terms for more than 30 years. VED, in particular, has become highly complex and is now dictated by when the vehicle was first registered, its engine capacity, fuel type, CO2 emissions, diesel RDE standards, and even its list price when new.

The report is available to download here:

Additional findings in the report include:

  • The House of Commons Transport Committee believes revenues from motoring taxation will hit zero by 2040 if the Government doesn’t act.
  • In a fully-electric future, the UK will need to secure 121 Terawatt hours (121 billion kWh) of additional energy annually to supply the road transport sector alone – that’s equivalent to more than 15 new nuclear powerplants similar to Sizewell B.
  • If the Expensive Car Supplement’s £40,000 threshold had been adjusted in line with new car price inflation, it would now be set at just over £51,000.
  • A ‘road tax’ has been with us since 1889 but it was the 1909 budget that ring-fenced the proceeds for road building. That arrangement officially ended in 1937 with all revenues since paid directly to the Exchequer.
  • Road fuel duty arrived in 1910 at three old pence a gallon.
  • The tax disc was first introduced by the 1920 Roads Act, at a rate of £1 per horsepower.
  • The concept of a flat tax rate introduced in 1948 survived all the way until 1999. The graduated VED bands based on CO2 emissions were introduced the year after.
  • Transport for London (TfL) spends almost a third (27%) of all Congestion Charge revenue on operating the scheme. The Ultra-Low Emission Zone (ULEZ), meanwhile, consumes more than half of all revenue in operational expenditure.
Chris Price
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