This report provides a comprehensive analysis of impairment loss in accounting, specifically addressing the treatment of goodwill and cash-generating units (CGUs). It begins with an introduction to impairment loss, emphasizing that assets cannot be valued beyond their realizable value, and the role of impairment in bringing asset values to their realizable worth. The report then delves into the reversal of impairment loss on goodwill, explaining how the asset revaluation process works and the implications of overvaluation. It explains the role of AASB 136, and the complexities of impairment tests for CGUs. The report also includes a practical example of impairment loss calculation for the China Division (a CGU) of Gali Ltd, detailing the carrying amount, recoverable amount, and the allocation of impairment loss to different assets, including goodwill, plant, copyright, machinery and inventory. The report concludes that the measurement of impairment loss while considering the cash generating unit is very much unlike from the calculation of impairment loss of separate asset.