When a VAT registered business issues an invoice to their customer, they must seek to ensure that they charge the correct rate of VAT. Whilst most businesses in the UK charge VAT at the standard rate of 20%, there are a number of different VAT rates and exemptions to be aware of. These include the reduced VAT rate of 5% and the positive zero rate (0%).

There are two other categories that the supplies of goods and services can fall under:

• Exempt - where no VAT is charged on the supply. Examples of exempt items include the provision of insurance, postage stamps and health services provided by doctors. If a business only sells VAT-exempt goods and services, they cannot register for VAT.
• Supplies that are 'outside the scope' of the UK VAT system altogether. These supplies are beyond the realm of the UK VAT system and you cannot charge or reclaim VAT on these supplies. Examples include goods or services you buy and use outside of the EU, statutory fees - like the London congestion charge and goods you sell as part of a hobby.

If a business has made an error in charging VAT then this needs to be corrected. The timing of finding an error can impact on how the issue is resolved.