Principal and ancillary supply

What it means

Principal and ancillary supply is a VAT principle under which a supply that merely complements the main supply and has no purpose of its own for the customer is taxed in the same way as the main supply. Typical examples are delivery, packaging or insurance invoiced together with goods.

The principle comes from EU Court of Justice case law. An ancillary supply is a means of better enjoying the principal supply rather than an aim in itself. A customer buys a book, not delivery, so delivery shares the book's VAT treatment.

It determines the VAT rate, the place of supply and any exemption. If the principal supply is subject to a reduced rate, the ancillary supply generally takes it on, whereas separate supplies are each taxed under their own rules.

How it works in practice

Incidental costs that the supplier charges the customer, such as delivery, packaging or insurance, form part of the taxable amount of the principal supply. They may be shown separately on the invoice but are taxed at the rate for the main goods or service.

Problems arise with bundles combining goods or services with different rates, such as accommodation with meals or a subscription with digital content. It must be assessed whether this is one composite supply or several separate supplies that must be split.

With exempt supplies such as property rental, the question is whether services like cleaning or utilities are ancillary to the rent or separate. The answer determines whether VAT is charged on them, and there is extensive case law in this area.

What to watch out for

Artificially splitting a single supply into parts to apply a lower rate to a larger share of the price may be treated by the tax authority as abuse. What counts is the economic substance of the transaction from a typical customer's point of view, not just how it is invoiced.

Assessing principal and ancillary supplies is not always clear-cut and depends on the circumstances. For significant amounts or new products, it is worth consulting a tax adviser or requesting a binding ruling so the company does not apply the wrong rate for years.