taxable salary in south africa
1 You have no car allowance or other income (e.g. interest or rent). 2  You are not claiming tax related deductions (e.g. medical expenses, retirement, travel). 3  You received interest from a source in South Africa not exceeding 4  -. R23 800 if you are below the age of 65 years; or.5  R34 500 if you aged 65 years or older.ou are liable to pay income tax if you earn more than: For the 2015 year of assessment (1 March 2014 - 28 February 2015). 1  R70 700 if you are younger than 65 years. 2  If you are 65 years of age or older, the tax threshold (i.e. the amount above which income tax becomes payable) increases to R110 200.