What should you enter to appear on all invoices regarding VAT?

The correct choice is related to ensuring compliance with VAT regulations, which stipulate that businesses registered for VAT must include their VAT number on invoices. This inclusion is crucial for several reasons. First, it identifies your business to tax authorities and facilitates the correct taxation of transactions. By displaying the VAT number, you not only affirm your status as a VAT-registered entity but also allow your customers to reclaim VAT if they are also VAT-registered, thus fostering transparency and efficiency in business transactions.

While other information such as your business name, bank details, and business address are indeed important elements of an invoice, they do not fulfill the mandatory requirement that specifically pertains to VAT compliance. The VAT number serves a unique function and is legally required to be visible on invoices to indicate that VAT has been accounted for in the pricing of goods or services, promoting clarity for both the seller and buyer.