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This study develops a model to explain why accounting procedures, also known as Generally Accepted Accounting Principles, are “generally accepted”. For this purpose, we focus on depreciation defined as the rational and systematic allocation of the original cost of an asset over the expected useful life of that asset. We investigate what it means to be “rational” using cooperative game theory. We show that cost allocations determined by the straight-line (SL) method, which is conventionally used worldwide, are elements of the core and that the conditions of the core can be rational in practice. Furthermore, we examine the relationship between the SL method and other solution concepts, such as the Shapley value and the nucleolus. Our next step is to clarify the characteristics besides the core selection of the SL method, those of other depreciation methods used in practice, and the logical relations between these characteristics.
Arata et al. (Wed,) studied this question.