A compulsory VAT deregistration is usually required if you:
A voluntary VAT deregistration can be made if you do not expect your taxable turnover to exceed the VAT deregistration limit. The current deregistration limit is £83,000.
You will be required to submit a final VAT Return for the period up to and including the VAT deregistration date.
You must account for any stock and other assets you have on this date if:
You can also make late claims for input tax on invoices received relating to the period that you held a VAT registration. This can be done after the final VAT return has been submitted (subject to the usual VAT time limits).