Is that done through SARS?
You must register your business for Value Added Tax (VAT) if the total value of taxable goods or services is more than R1 million in a 12-month period, or is expected to exceed this amount.
A business may also register voluntarily if the income earned in the past 12-month period exceeded R50 000.
VAT is an indirect tax on the consumption of goods and services in the economy.