Tennessee Code Title 67. Taxes and Licenses § 67-1-901

(a) In all cases where not otherwise provided in which an officer, charged by law with the collection of revenue due the state, shall institute any proceeding, or take any steps for the collection of the sum alleged or claimed to be due by the officer from any citizen, the person against whom the proceeding or step is taken shall, if that person conceives the same to be unjust or illegal, or against any statute or clause of the constitution of the state, pay the revenue under protest.

(b) This section shall not apply to any tax collected or administered by the commissioner of revenue when such tax is paid on or after January 1, 1986. Notwithstanding any other law to the contrary, it is the intent of the general assembly that it shall not be a condition precedent to any claim or suit for recovery of any taxes collected or administered by the commissioner when such taxes were paid on or after January 1, 1986, that the taxes were paid under protest, involuntarily, or under duress.