waiver
noun [ C ]
uk/ˈweɪvər/ usan official decision that a rule, or agreement does not have to be obeyed, or that you will not ask for something that you have a right to:
grant/obtain/sign a waiver Contributors signed a waiver giving up any rights to future profits.
The company recovered $12 million of its start-up costs from a waiver of state income taxes.
See also
collision damage waiver