Tennessee Code Title 5. Counties § 5-14-114

(1) Have a direct interest in a contract or purchase order for supplies, materials, equipment, or contractual services used by or furnished to a department or agency of the county government. As used in this subdivision (a)(1), “direct interest” means a contract with such person personally or with a business in which such person is the proprietor, a partner, or the person having the controlling interest in the business; “controlling interest” includes the individual with the ownership or control of the largest number of outstanding shares owned by a single individual or corporation;

(2) Have an indirect interest in the purchase of supplies, materials, equipment, or contractual services for the county unless the person publicly acknowledges the interest. A person who is not a member of a governing body and who is required to publicly acknowledge an indirect interest must do so by reporting the interest to the office of the county mayor to be compiled into a list that must be maintained as a public record. As used in this subdivision (a)(2), “indirect interest” means a contract in which a person is interested, but not directly so, and includes contracts where the person is directly interested and is the sole supplier of goods or services in the county; or

(3) Accept or receive, directly or indirectly, from a person, firm, or corporation to which a contract or purchase order may be awarded, by rebate, gift, or otherwise, money or anything of value whatsoever, or a promise, obligation, or contract for future reward or compensation.