Red diesel duty cut - what does it mean?

The Treasury’s announcement of a one‑third cut in red diesel duty is a useful bit of good news for anyone running fuel‑hungry machinery in the countryside. From 15 June until the end of 2026, the rate will fall from 10.18p per litre to 6.48p per litre, the lowest red‑diesel duty in more than 20 years, aimed at easing pressure on farmers, hauliers, and other users as retail fuel prices remain around 50–55% higher than the pre‑crisis baseline.

For forestry operations, this is relevant on almost every level: planting, thinning, harvesting, forwarders, loaders, and timber transport all rely heavily on diesel plant and machinery. A duty cut of this size won’t solve the broader ‘cost of doing business’ squeeze, but it does give some short term relief in one of the biggest running costs, which can help when you’re planning contracts or bidding for work over the next 12–18 months.

If you’d like to see how much difference this makes to your own operations, you can plug your estimated fuel use and what the additional costs mean, into this calculator we shared on Facebook at the start of the Hormuz crisis. It’s a quick way to check how much the duty cut might save you across a season and whether it changes your margins on specific jobs or contracts.

Jack

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🌲 The diesel engine is named after its inventor, Rudolf Diesel, whose first successful prototype in 1897 was around 26% efficient—more than double the efficiency of typical steam engines at the time.