Frequently Asked Questions About Red Diesel

Red Diesel FAQs, rule changes and regulations – discover everything you need to know about the use of the rebated fuel in 2025.

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RED DIESEL FAQ

Your guide to Red Diesel

Red diesel – also known as gas oil – is a diesel fuel used for some off-road applications, such as in agriculture. Its use has become restricted to mostly non-commercial purposes since duty equalisation legislation was introduced in April 2022.

We’ve compiled a handy FAQs guide to address common questions about the tax-rebated fuel and provide clarity on the usage, legality, and availability of red diesel according to UK regulations.

Red Diesel FAQs

What is Red Diesel?

Red diesel is a type of diesel fuel dyed red to indicate its status as a rebated fuel, subject to lower tax rates. It’s chemically similar to standard (white) diesel but is intended for specific uses, primarily in off-road machinery.

How much is Red Diesel?

The price of fuel changes daily due to influences from the global oil market, so it’s impossible to publish fixed prices online. The quantity and location of the customer can also have an impact on Red Diesel/Gas Oil prices, so it’s best to request a quote from a reputable supplier to check what the current price is.

Certas Energy is proud to be a leading supplier of Red Diesel in the UK and we strive to offer our customers a great price. As bulk Gas Oil suppliers, our infrastructure, network and buying power enables us to provide a competitive, reliable service to cater to our customers’ needs. Call us today on 0345 600 4040 or request a quote online.

Who is Permitted to Use Red Diesel?

As of April 2022, red diesel usage is restricted to certain sectors, including:

Agriculture, horticulture, fish farming, and forestry
Rail transport
Non-commercial heating and electricity generation (e.g., state schools and hospitals)
Community amateur sports clubs and golf courses
Marine craft (with specific regional exceptions)
Travelling fairs and circuses

For a comprehensive list of permitted uses, please refer to the latest UK government guidelines.

Do I Need a Licence to Purchase Red Diesel?

No, a licence is not required to purchase red diesel. However, you must be an eligible user and complete an RDCO (Registered Dealer in Controlled Oil) form upon purchase. It’s essential to buy red diesel from an HMRC-registered supplier.

Does Red Diesel Expire?

Yes, red diesel can degrade over time. When stored correctly, it can last up to 12 months. To maximise its shelf life:

Store in a dry, cool environment
Use appropriate fuel additives to prevent bacterial growth and water contamination

For guidance on suitable additives, consult with a fuel specialist like Certas Energy.

How Can I Reclaim Tax on Red Diesel?

To reclaim tax on red diesel, you can complete the HO27 form. The amount reclaimable depends on the quantities purchased and their specific uses.

Who Monitors the Correct Usage of Red Diesel?

HM Revenue and Customs (HMRC) and police authorities are responsible for monitoring red diesel usage. They may conduct spot checks by testing fuel tanks for the presence of red dye. Misuse can lead to significant fines, vehicle seizure, and prosecution.

Is Gas Oil the Same as Red Diesel?

Yes, in the UK, gas oil is another term for red diesel. It’s also referred to as tractor diesel or rebated fuel.

Where Can I Buy Red Diesel?

Red diesel can be purchased from designated fuel distributors like Certas Energy or at marinas for permitted marine use. It’s not available at standard fuel stations due to its restricted usage.

Why Choose Certas Energy for Red Diesel?

Certas Energy offers several advantages for red diesel supply:

Reliable Nationwide Delivery: We supply red diesel across the UK with flexible delivery options.
Competitive Pricing: Flexible payment options and credit terms, as well as competitive red diesel prices.
Reputable Supply: As red diesel is heavily regulated, it’s important to buy bulk supplies from a reliable, specialist supplier.
Fuel Management Solutions: Including bulk storage tanks and telemetry monitoring to track fuel levels.

Can I Use Red Diesel?

Following the 2022 fuel duty reforms, red diesel use has been restricted in certain industries. Businesses should always check HMRC guidelines to ensure they are using gas oil legally.

Need help with fuel compliance? Our team is here to provide expert advice.

Can You Support with Delivery and Storage?

We provide hassle-free red diesel delivery across the UK, ensuring your fuel arrives when and where you need it.

Bulk Red Diesel Supply: Flexible volumes for businesses of all sizes.
Nationwide Fuel Delivery: Rapid response to keep your operations running.
Fuel Storage Solutions: Bunded fuel tanks and telemetry monitoring to manage fuel levels efficiently.

We understand that fuel reliability is critical. That’s why we offer scheduled fuel deliveries to minimise downtime and keep your business moving.

Fuelling your future

With the tightening of regulations, it’s vital for permitted red diesel users to remain informed and compliant to avoid penalties. Always refer to the latest HMRC guidelines and consult with a professional if you’re unsure about the specific uses and restrictions of red diesel for your operations.

Still got questions? From red diesel tax changes to alternative fuels, your local experts are always on hand to offer advice and guidance. Get in touch, today.

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