Unless everything you sell is exempt from VAT, you can voluntarily register for VAT if your business’ VAT taxable turnover is less than £82,000, and you must register if it is more than this value. Your registration is followed by you receiving a VAT registration certificate.
What are your VAT responsibilities?
From the effective date of your registration you have the responsibility to charge the right amount of VAT on your goods and services, to pay any VAT due to HMRC, submit VAT Returns and keep VAT records and a VAT account. You also have the right to reclaim any VAT paid on purchases made before your registration.
You can register online or by post, or you can appoint an accountant (or agent) to submit your VAT Returns and deal with HMRC on your behalf.
If neither you nor your business is based in the UK, there is not threshold but you must register if you expect to supply any goods and services to the UK in the next 30 days or as soon as you do that.
Another case when you may also have to register for VAT is if you take over a business that’s already registered in UK.