Why Most EV Mileage Policies Fail HMRC Tests

Most EV mileage reimbursement policies start off sound — then quietly drift out of alignment with HMRC’s Advisory Electricity Rates (AER).

Not from negligence, but from complexity.

Since September 2025, HMRC has made it clear:

8 p/mile for home charging
14 p/mile for public charging
Yet many companies still apply a single flat rate inherited from pre-EV policies. The outcome? Non-compliant claims, inconsistent payroll handling, and growing audit exposure.
👉 Learn more — AER Compliance Pack

When Good Policies Go Out of Date

Even the most diligent finance teams struggle to keep up with changing AER rates, shifting charging behaviours, and internal documentation cycles.

It’s common for internal spreadsheets and policy PDFs to go untouched for months — even years — as daily operational pressure takes priority.

“We know our policy needs an update, but we simply don’t have weeks to fix it.”

— Fleet Finance Manager, UK

Meanwhile, drivers face confusion about what counts as home vs public charging, and payroll departments spend hours resolving mismatched expense claims.

None of this is deliberate. It’s simply the by-product of an evolving EV ecosystem with complex reimbursement logic.

Introducing the AER Compliance Pack

To help fleet and finance leaders regain control, EV Decision Compass created the AER Compliance Pack — a structured, HMRC-aligned framework to update policies within 72 hours.

What’s included:

✅ Audit of your current EV mileage policy
✅ Compliance report against the latest HMRC AER guidance
✅ Audit-ready policy template with 8p / 14p structure
✅ Driver communication and rollout checklist
The process is designed for real-world teams — quick, practical, and traceable.

Why It Matters

Being HMRC-compliant isn’t about ticking a box. It’s about governance, fairness and trust.

A transparent, audit-ready EV mileage policy ensures:

Consistent application of rates across teams
Reduced risk of audit exposure
Fewer driver disputes and reimbursement errors
Confidence that your data will stand up under scrutiny

How to Get Started

Visit EV Decision Compass.
Upload your current policy or reimbursement template.
Receive your updated, audit-ready version in 72 hours.
Roll it out internally with confidence.
No spreadsheets. No confusion. Just compliance — fast.

In Summary

Most policies don’t fail by intent — they fail by inertia.

With the AER Compliance Pack, you can fix that in days, not weeks.

👉 Get HMRC-compliant in 72 hours

FAQ

Q: What’s included in the 72-hour AER Compliance Pack?

A: A full audit of your EV mileage policy, a compliance report with HMRC AER updates, and a ready-to-sign policy document, plus driver comms templates.

Q: Does it cover both home and public charging?

A: Yes — we align reimbursements to the official 8p (home) / 14p (public) split.

Q: Can we include depot or company-owned charging?

A: Absolutely. The audit maps every charging type and ensures your policy language covers them clearly.

Q: How fast can we implement the new policy?

A: Most teams go live within days of delivery, with minimal operational disruption.