New tax rules: Filling up with petrol is set to become more expensive in England

HM Revenue & Customs (HMRC), the UK tax and customs authority, issued a clarification in June 2026 regarding the tax treatment of fuel for superyachts. The guidance does not introduce any new legislation, but reaffirms the position that most superyachts are to be treated as private pleasure craft (PPC) when purchasing fuel in the UK. This also applies to many vessels in the charter business, which are usually commercially registered. The new rules apply to both superyachts and their tenders and have a direct impact on fuel costs. According to HMRC, a vessel is considered a private yacht if it is used by the owner, charter clients or guests for private or leisure purposes. This includes holiday cruises, round-the-world voyages and charter trips. The ownership structure, commercial registration or the employment of crew do not automatically make a vessel a commercial vessel.

Classification of superyachts

In the guidance, HMRC explains that whilst many yachts, tenders and support yachts are operated commercially and offered for charter, this alone does not result in them being classified as commercial vessels. Yachts are regarded as commercial vessels only in exceptional cases. This is the case, for example, when they are commissioned by a government agency or an industrial client to provide non-leisure-related services.

The difference between white and red diesel

In the UK, there are two types of diesel: white diesel and red diesel. White diesel is the standard diesel, which is sold at the full rate of tax. VAT is charged at the standard rate, and there is no tax relief. White diesel is commonly used for road transport and all applications that do not qualify for a tax reduction. Red diesel is the same standard diesel, but is dyed red to indicate that it can be sold at a reduced tax rate. It is also known as ‘marked gas oil’ and is intended for certain tax-exempt or tax-privileged purposes. These include non-propulsion use on vessels, such as generators or heating systems, as well as certain agricultural, construction and industrial applications on land. Private boats and yachts are not eligible to obtain red diesel or to use it for propulsion.

Regulations on red diesel on private yachts

HMRC has stipulated that red diesel may be supplied to private yachts in the UK. However, the customer must declare the breakdown between propulsion and non-propulsion consumption. The full VAT rate applies to all deliveries of 2,300 litres or more. The fuel supplier is responsible for paying the additional amount for propulsion consumption. If red diesel is used for purposes other than those permitted, HMRC will treat this as tax evasion. The situation is similar in Germany.

Financial implications

In mid-June, the tax rate for red diesel was reduced from 0.119 euros per litre to 0.076 euros per litre, effective until 31 December 2026. The tax rate for white diesel is currently 0.62 euros per litre. This results in a difference of 0.54 euros per litre in tax payable to HMRC on propulsion fuel for private yachts. The exact financial implications vary depending on the yacht’s fuel consumption and operating profile, but can be significant for larger vessels. A superyacht that takes on 50,000 litres of marine diesel can expect an additional tax burden of around 27,000 euros. For yachts such as the The 118.8-metre-long “Breakthrough” With a diesel tank with a capacity of 545,000 litres, the additional tax payable amounts to 294,000 euros. A vessel’s classification therefore has a significant impact on the total cost of fuel purchased in the UK, particularly for larger superyachts with high fuel consumption.