You will be required to register for VAT if the turnover of your business exceeds the VAT registration threshold.
Businesses that produce taxable supplies, subject to VAT, are required to monitor the value of these supplies to determine whether they exceed the VAT registration threshold. The VAT registration and deregistration thresholds will not change for two years from 1 April 2022. The taxable turnover threshold, which determines whether a person must be registered for VAT, will remain at £85,000 until 31 March 2024.
If your business produces taxable supplies below the registration threshold, you may consider registering for VAT voluntarily, which may offer the opportunity to recover VAT on costs.