The rent of a rented real estate object is collected by using a charge collecting mechanism that a credit card issuer has. A method for collecting the rent of a rented real estate object in which the renter to whom a credit card can be issued is exempted from paying the deposit and obliged to settle the rent of the real estate object by the credit card, and the lender of the rented real estate object is given a predetermined bond in place of the deposit by the credit card issuer and obliged to pay the rent collecting agent commission. The renter can be obliged to settle the reinstatement cost by credit card. The examination of a renter can be replaced with the examination for issuing a credit card. The settlement of the rent and reinstatement cost by credit card can be the object of the service (for example, point impartment or cash back) provided by the credit card issuer.