Generally, you make a capital loss if your reduced cost base is greater than your capital proceeds. The excess is your capital loss.
Example 14: Calculating a capital loss - Antonio
Antonio acquired a new income-producing asset on 28 September 1999 for $100,000, including stamp duty and legal costs. He sold it for $90,000 in November 2009. During the period he owned it, he was allowed capital works deductions of $7,500. Antonio works out his capital loss as follows.
| Cost base | $100,000 | 
| less capital works deductions | $7,500 | 
| Reduced cost base | $92,500 | 
| less capital proceeds | $90,000 | 
| Capital loss | $2,500 | 
Example 15: Calculating a capital loss - Chandra
In July 1996, Chandra bought 800 shares at $3 per share. He incurred brokerage and stamp duty of $100. In December 2009, Chandra sold all 800 shares for $2.50 per share. He incurred brokerage of $75. He made a capital loss, calculated as follows.
| Calculation of reduced cost base | ||
| Date expense incurred | Description of expense | Expense | 
| July 1996 | Purchase price | $2,400 | 
| July 1996 | Brokers fees and stamp duty | $100 | 
| December 2007 | Brokers fees | $75 | 
| Reduced cost base | $2,575 | |
| Calculation of capital loss | ||
| Reduced cost base | $2,575 | |
| Capital proceeds 800 x $2.50 | $2,000 | |
| Capital loss | $575 | |
However, the reduced cost base is not relevant for some types of CGT events. In these cases, see appendix 1 for the amounts to use for the particular CGT event.
Reduced cost base
You cannot index a reduced cost base.
End of attention