Question - I have bought 3 tranches of BHP over the years. I sold one tranche today. Can I choose which tranche to use as my capital base?
140 shares @ $10 on 1 Jan 04
120 shares @ $15 on 1 Jan 05
110 shares @ $20 on 1 Jan 06
If I sold 110 shares, can I use the $20 1 Jan 06 as my cost base or do I have to use the earliest date? I couldn't find an answer on the ATO website (obviously not looking hard enough).
Thanks for your help.