Abstract: An information processing device is an information processing device that outputs a fee plan indicating a fee required to use a vehicle or battery selected by a user, the information processing device including: an acquisition unit that acquires selection information specifying a selected object selected by the user; and a processing unit that outputs the fee plan, wherein when the selected object is eligible for a subsidy, the processing unit outputs an eligible plan as the fee plan, and in the eligible plan, the fee is set to a fixed amount of money in an initial predetermined period, and the fee is set to be lower than the fixed amount of money and to be decreased with passage of time after the predetermined period has passed.