Tax Planning
Fuel Duty, Mileage & Red Diesel: What Individuals and Businesses Need to Know in Late 2026
Recent changes to fuel duty, mileage rates and vehicle-based taxes offer opportunities for savings—but also require attention for accurate expense claims and budgeting.
By NomadicTax Research Team • 6 min read • September 7, 2026
## Recent Policy Changes
- **Fuel Duty**: The planned increases scheduled for 1 September and 1 December 2026 will **no longer proceed**. The standard rate remains at **52.95p per litre**. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-143/issue-143-of-agent-update?utm_source=openai))
- **Red Diesel Duty**: The duty rate dropped from **10.18p to 6.48p per litre** from 15 June, and this lower rate remains in effect through **31 December 2026**. Useful for eligible industries (e.g. agriculture, construction) that use red diesel. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-143/issue-143-of-agent-update?utm_source=openai))
- **Heavy Goods Vehicle (HGV) Vehicle Excise Duty (VED)**: When renewing HGV VED over the upcoming 12 months, hauliers will pay just **£1**, a temporary relief. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-143/issue-143-of-agent-update?utm_source=openai))
- **Approved Mileage Allowance Payments (AMAPs), Mileage Allowance Relief & self-employed mileage rates** are increased, and these new rates are **backdated to 6 April 2026** for the 2026-27 tax year. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-143/issue-143-of-agent-update?utm_source=openai))
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## Implications for Tax Planning & Compliance
- **Claiming travel expenses**: Self-employed individuals or those using vehicles for business should note the increased mileage rates. Ensure you use updated rates in all claims from 6 April onward.
- **Fuel costs for business**: The red diesel duty cut provides savings until end-2026, but you must properly document usage and eligibility (red-diesel is restricted to specified uses).
- **Cash flow planning**: With fuel duty frozen, budget forecasts for logistics and transport businesses will need to account for lower running costs. But anticipate duty or price changes post-December.
- **Transport sector benefit**: Hauliers renewing VED benefit from the £1 charge—must check eligibility and renewal dates.
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## Practical Examples
a) A self-employed tradesperson who travels to client sites: for every business mile driven using personal vehicle, apply increased AMAP from April 2026 when calculating costs.
b) Farm operator: using red diesel for agricultural machinery—usage continues to benefit from lower duty until end-2026. Keep receipts to prove legitimate use.
c) Haulier renewing HGV licence in December: expect just £1 VED renewal cost if renewal falls within relief period.
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## What to Watch Out For
- Reliefs and reduced rates are time-limited; likely revert with inflation or future budgets.
- Watch out for eligibility rules—e.g. red diesel only for permitted uses, or vehicles in correct tax class for VED relief.
- Mileage claims must align with **approved rates** lest HMRC challenge or disallow.
- Be ready for changes; this freeze in fuel duty may generate political pressure in future budgets.
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## Action Steps
- Review motor vehicle and travel expenses policies
- Update accounting systems to reflect increased mileage and reliefs from 6 April
- Ensure you maintain records and evidence (dates, mileage logs, fuel receipts)
- Seek advice if you're unsure whether your business qualifies for red diesel duty relief or other specific benefits.
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## Bottom Line
If your business or personal activity involves significant travel, fuel costs, or HGV operations, these changes represent real cost savings. But using them properly requires attention to rules, accurate record keeping, and staying aware of deadlines and durations. For maximum benefit, act now.