Closing a UAE Business? When to Apply for VAT Deregistration Should My Business Apply for VAT Deregistration Before Closing? Closing a UAE Business? When to Apply for VAT Deregistration ? Closing a company in the UAE involves more than cancelling its trade license. If the business is registered for VAT, it must also determine when its VAT deregistration obligation arises, submit the appropriate application to the Federal Tax Authority and complete its final VAT obligations. T