This taxation law assignment examines various aspects of allowable deductions and tax credits under Australian legislation. It analyzes scenarios related to moving machinery, revaluing assets, legal expenses incurred by a company, and advertising expenditures claimed as input tax credit by Big Bank Limited. The assignment delves into relevant sections of the Income Tax Assessment Act 1997 (ITAA 1997) and the Goods and Services Tax Act 1999 (GST Act) to provide comprehensive legal reasoning and conclusions for each case study.