2021 Tennessee Code
Part 3 - Enumerated Functions
§ 7-3-306. Competitive Bidding

Where the charter for a metropolitan government requires purchases in excess of one thousand dollars ($1,000) be made on the basis of competitive bidding, “competitive bidding” means:
Dollar amount of purchase: Requirement:
$1,000 to $3,999.99      Three (3) verbal, including telephone,   quotations required
$4,000 to $9,999.99      Three (3) written, including faxed,  quotations required
$10,000 and above      Competitive sealed bids or request for   proposals