On 15 August 2020 Appellate Holdings Ltd announced AU$90 million write-off of long-term assets for year ended 31 July 2020, which includes goodwill write-off of $34m and PPE write-off of $56 million. Analysts were also concerned about inventory overstatement before the release of annual report. After this write-off, the financial statements of 2020 reveal the following key information:

PPE = $350m

Receivables = $94m

Inventory = $120m

Goodwill = $49m

Assuming tax rate is 30%

Answer the following question:

What evidence you need to look into for you to determine the need for any further write-off of goodwill and PPE and what is the difference between the write-off mentioned in the question regarding goodwill and that related to tangible assets (i.e. PPE) in terms of the accounting adjustment for tax purpose.