Not financial advice but my understanding:Effectively for each...

Not financial advice but my understanding:

Effectively for each of your applicable transactions¹ you will want to split the cost base across the two stocks in the proportion dictated by the ASX, with consideration for the ratio of entitlement shares. Example below:

ASX ruling: FFX (30%), LLL (70%)
Example Transaction: 1 Jan 2022 - Purchase 14,000 shares - $1 per share - outlay $14,000

Cost Base Calcs:
FFX: $1 * 30% = 30c
14k shares
Cost Base: $4,200

LLL: $1 * 70% * 1.4 = 98c
10k shares
Cost Base: $9,800

Total cost base: $14,000 (should equal your initial outlay as a sense check)


You can basically substitute in the percentage ruling by the ATO and your initial cost base from FFX, then apply it to the amount of units for each of your purchased bundles of shares.

Hopefully that is a bit helpful and once again not financial advice

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¹purchases of FFX shares made prior to (and still held at) June 3