A tax directive can be obtained by employees that receives commission income. This directive will then instruct the employer to deduct tax at a fixed rate, which is usually 18%. If you would like us to assist with applying for a tax directive, please complete the form below and we will send you more information. Read more.. Please note The cost to apply for a tax directive is R300. The turnaround time is 2 to 3 days. However, this can take longer if the taxpayer’s contact details are not up to date at SARS.