2021 Tennessee Code
Part 12 - Local Governments
§ 12-3-1204. Competitive Solicitation

Dollar Amount of Purchase    Requirement
$1,000 to $3,999.99 Three (3) verbal (including telephone)   quotations when possible.
$4,000 to $9,999.99 Three (3) written (including fax)   quotations when possible.
$10,000 and above Competitive sealed bids or proposals for   nonemergency and nonproprietary   product purchases.