Payment system and payment method

A payment system for a purchaser to make a payment for merchandise purchase by using a mobile terminal and a display unit, comprising:

• a payment application distribution server that distributes a payment application that is an application program installed in the mobile terminal to purchase an article from a commodity sale website, wherein:
• when an article is purchased from the commodity sale website, the display unit displays an information code including a record of address information of a payment method selection page associated with the article;
• the mobile terminal that has installed the payment application distributed from the payment application distribution server includes:
• a processing section that performs payment processing associated with payment, upon start of the payment application;
• a reading section that optically reads the information code displayed on the display unit in a state where the processing section is performing the payment processing;
• a display section that displays the payment method selection page when the address information is read by the reading section and the payment method selection page is accessed based on the address information;
• an input section that is operated when inputting any one of a plurality of payment methods selectably indicated on the payment method selection page;
• and
• a transmission section that transmits a selection result resulting from the input operation of the input section to the commodity sale website, together with purchase information including information associated with a purchaser and a delivery destination.