PROBLEM TO BE SOLVED: To enable all the household expenditures to be managed without any omissions and to allow a retailer and a manufacturer to use this purchase information.;SOLUTION: The purchase information providing system has a retailer terminal 10 for transmitting the purchase information of an article to the portable terminal connected by a wire or a radio at the time of purchasing the article by a consumer; a mobile terminal 20 for accumulating the purchase information by receiving the purchase information or inputting the same information by an inputting means the portable terminal has at the time of purchasing the article by the consumer, transmitting the purchase information to a service provider terminal accessing the service provider terminal via a communication line, and receiving the purchase information; the service provider terminal 30 for receiving and accumulating the purchase information from the portable terminal and transmitting the purchase information to the portable terminal in correspondence to a request of the portable terminal, the retailer terminal, or the manufacturer terminal; and the communication line 60 for connecting each dealer's terminal which receives the purchase information from the service provider terminal to each of the terminals.;COPYRIGHT: (C)2004,JPO&NCIPI
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