The correct answer is tairiff
Tariffs are charged by member companies that are concessionaires or permission holders of state and municipal federal public services, to allow for a fair return on capital, to improve and expand services and to ensure the economic and financial balance of the contract.
Tariff is originating business revenue, that is, revenue originating from the intervention of the State, through its associates, permissionaires or concessionaires, in the economic activity.
In the tariff, the service is optional, and therefore the payment is voluntary, that is, it is paid only if the service is used. The tariff is a consideration for services of a commercial or industrial nature.
