Value Added Tax (VAT) is a tax collected on the sale of your goods or services and relinquished on the purchasing of the goods or services that will be used in your business. The administration of VAT in the UK is managed by HM Revenue and Custom. Should my company be VAT registered? VAT registration is only compulsory once the turnover of your company exceeds or is likely to exceed the government threshold of £82,000 (2015-2016) for any rolling 12 month period. You can register for VAT on a voluntary basis at any point up until when your company's turnover exceeds the abovementioned threshold.