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Effective date of VAT registration

Businesses must register for VAT when their turnover exceeds the registration threshold (currently £90,000). This must be done if, at the end of any month, the taxable supplies in the previous 12 months or less exceed the registration threshold or if the business expects that in the next 30 days alone their turnover will exceed the registration threshold.

Businesses whose turnover does not reach the threshold do not need to register; however, they may choose to do so voluntarily. This can be advantageous, for example, if they make zero-rated supplies but buy goods or services which are liable for VAT at the standard or reduced rate as it will enable them to recover the VAT suffered.

Start date

When a business registers for VAT voluntarily, they can choose the date from which their VAT registration takes effect. It is important that this date is chosen carefully as once the VAT registration is effective, the business can recover VAT incurred from that date but must also charge VAT on taxable supplies that it makes from that date. It is not possible to recover VAT incurred on purchases prior to the date of registration, so if the business is planning a large purchase on which they hope to recover the VAT, they should ensure that their VAT registration is effective before making the purchase.

A business can apply for their voluntary registration to be backdated by up to four years from the date that they register for VAT. Where the registration is backdated, the business will be able to recover VAT charged on taxable supplies from that date. On the flip side, the business must also account for VAT at the correct rate on all taxable supplies made on or after that date.

Amending the registration date

It is important that businesses voluntarily registering for VAT consider carefully when they want their registration to take effect as there is no automatic right to change it and there is no right of appeal if HMRC deny a request to amend the effective date of registration. Where a mistake is made in choosing the effective date of registration and this affects the pre-registration cost calculations of what the business can recover and what the business must account for, HMRC will not normally allow the registration date to be changed. 

01/10/2025