| 摘要 |
PURPOSE: An information technology infra-system and a tax imposition method are provided to calculate cost of certain trade so that the cost can be suitable for a tax reference of each foreign corporation. CONSTITUTION: Various kinds of tax are set and stored as tax codes in a database(S1). A tax option of each foreign corporation is registered, and this registered information is stored in the database(S2). When a user computer of a foreign corporation requests cost calculation about the certain trade(S3), a server checks which foreign corporation the user computer belongs to(S4). The server checks the tax option that is applied to corresponding foreign corporation(S5). If the user computer remits trade money necessary for calculating tax(S6), the server calculates the tax applied to trade cost according to operation application ratios of the tax kinds registered as the tax option(S7). The result of the calculation is sent to the user computer of the corresponding foreign corporation(S8).
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