as an investor its enough to know the date, your purchase plus costs (inclusive of GST) and the date and the sale price minus costs.
but for a share trader its different
I reckon you need to reconcile with your bank account and have columns for your different costs like purchased shares, brokerage, bank costs, interest, power, telephone,
broadband, paper/magazines, gst etc.
On the other side sold shares, brokerage, interest, gst.
how do other share traders do this?