Tenn. Code § 7-41-110
A municipality may, including through an industrial development corporation, limit, condition, or provide incentives or financial support in the district as it deems appropriate, including the requirement that the benefited property owners participate in the repayment of indebtedness due to district formation in an amount equal to twenty-five percent (25%) of the property tax for the real property owned by the property owner in the district each year, for the length of time as the municipality receives an appropriation of sales and use tax in accordance with this chapter and the property owner provides a lien on the property for such repayment. A municipality shall not provide financial assistance for the location or relocation of existing retailers located within a fifteen-mile radius of the district, if the existing location is within this state, unless the sales floor space is increased by thirty-five percent (35%) or more from that of the existing store. A municipality may allocate some or all of the incremental increase in property tax revenue directly as a result of the development within the district to pay for costs associated with the district formation, economic development projects, or extraordinary retail or tourism projects within the district.
T.C.A. § 7-41-110