EVDecisionCompass Policy Pulse – September
Updated on

The start of September brings more than just a calendar change — it reshapes the numbers fleet managers must track. Here are the shifts that matter this month.
1. Mileage reimbursement split becomes reality
From today, HMRC’s Advisory Electricity Rate is no longer flat. It is 8p per mile for home charging and 14p per mile for public charging. This change formalises what drivers already feel — charging away from home is more expensive. Fleets now face a decision: adjust reimbursement fairly, or risk driver dissatisfaction.
2. Electric Car Grant stuck at £1,500
The higher £3,750 band remains an empty promise. For now, every approved model sits in the £1,500 tier, from Renault and Citroën to Nissan and Vauxhall. Fleets should budget on this basis and keep pressure on suppliers — but not bank on the higher subsidy.
3. Infrastructure funding starts to land
The government’s Local EV Infrastructure (LEVI) scheme is now moving from paper to pavement. Councils and NHS fleets are receiving funding to roll out kerbside charging for households without driveways. For corporate fleets, this directly affects fairness in mileage policy — drivers without home charging are no longer left behind.
4. ZEV mandate flexibilities kick in
OEMs are leaning heavily on credit transfers and PHEV allowances to meet 2025 quotas. Industry voices warn this could slow the pure EV transition. For fleets, the implication is supply-side: expect variability in model availability and pricing as manufacturers play the compliance game.
5. Total Cost of Ownership (TCO) is accelerating
With VED live since April, the AER split starting today, and VAT on public charging still at 20%, Whole-Life Cost models are evolving faster than ever. Fleets that don’t update quarterly risk making decisions on outdated numbers.
Why it matters
Policy now directly affects driver fairness and reimbursement schemes.
Subsidies remain modest — don’t overestimate grant value.
Access to charging is shifting thanks to local infrastructure budgets.
Supply dynamics are changing under ZEV mandate rules.
TCO updates are not optional: they are urgent.
👉 Model the real impact instantly with our Fleet Savings calculator (UK) and explore our UK methodology for full transparency.
Sources
GOV.UK — Advisory fuel rates
GOV.UK — Plug-in car and van grants
GOV.UK — Vehicle tax for electric and low-emissions vehicles
GOV.UK — Plug-in van and truck grants
ABI — Salvage Code of Practice
Zapmap — UK Public Charging insights
Related reading
More fleet electrification analysis curated for this topic.
- Mandatory Payrolling 2027: The EV Data Handoff to Fix Now
02 Sept 2026
Mandatory payrolling will bring company cars and car fuel into real-time reporting from April 2027. Fleet, Finance and Payroll need a reliable data handoff before then.
Read more - Company Car vs Employee-Owned EV Mileage: Which UK Rules Apply?
30 Aug 2026
Company car and employee-owned EV mileage sit under different HMRC frameworks. Use this scope test before setting a UK reimbursement rate.
Read more - The 10 Controls Every Company EV Mileage Claim Needs
30 Aug 2026
Ten practical controls for Finance and Payroll teams reviewing one business-mileage claim in a fully electric company car.
Read more - HMRC AER Update: 7p Home and 15p Public from September 2026
30 Aug 2026
HMRC's Advisory Electricity Rates from 1 September 2026 remain 7p per mile for home charging and 15p per mile for public charging, for fully electric company cars only.
Read more - HMRC AER Effective Dates: The Payroll Control for 1 June 2026
30 Aug 2026
HMRC's electric company-car rates did not change on 1 June 2026. Finance and Payroll still need a controlled effective-date decision.
Read more