Turnover tax in South Africa is calculated based on your annual turnover. Here's how it works:For turnover up to R335,000, no tax is payable.For turnover between R335,001 and R500,000, you pay 1% of each Rand above R335,000.For turnover between R500,001 and R750,000, you pay R1,650 plus 2% of the amount above R500,000.For turnover above R750,000, you pay R6,650 plus 3% of the amount above R750,000.