trading income according to the reciever is deemed income, same as rental income. It will be added to your nett income and taxed at your marginal rate. Losses however cannot be netted off. However you can ring fence your trading income and carry it over to next year when you do make a profit off it. written up quiet nicely on SARS on what they deem as income of capital nature and what is for income tax
if you have made capital gains the next year you they take the losses into consideration and offset them. Thats why you must keep your tax documents for 5 years!! But its all in their systems anyway! Anyway dont make losses we here to get rich DAMMIT!!
check out S20A of the income tax act, it will answer your question.
if the R100k is revenue in nature then there shouldn't be a problem in getting the full loss tax benefit at whatever your marginal tax rate is. i know of a couple of people who have received this benefit on losses made last year and got their cash paid back to them by SARS through e-filing within a week or so of submission. i was one.
i think the problem comes in when you can't prove that your trading business (assuming of course this is all revenue in nature) is going to be profitable after 3 years, then the losses become ring fenced.
you cannot hope to solve your tax problems/challenges on the forum. nothing wrong with throwing about some advice and opinion, but doomsday gave you the best advice of the lot, ie - seek out a tax expert ! there are too many variables to everyones unique situation. you are no exception. if your car was broken, would you expect the share forum community to be able to fix it by saying "my car wont start, what now ?" tis the same thing. you have offered no background or details with your question. how do you expect an intelligent answer ? do you have a day job ? are you predominantly a trader ? how long have you held the shares ? is the loss on paper or actual loss incurred on sale ? do you hold any other shares ? what is your intent on share dealings ? .....