Thuvakudi was constituted as a Town Panchayat and promoted to a third-grade municipality in 2004. It was promoted to a second-grade municipality in 2010. The Thuvakudi municipality has 21 wards covering an area of and there is an elected councillor for each of those wards. The functions of the municipality are devolved into six departments: general administration/personnel, Engineering, Revenue, Public Health, city planning and Information Technology (IT). All these departments are under the control of a Municipal Commissioner who is the executive head. The legislative powers are vested in a body of 21 members, one each from the 21 wards. The legislative body is headed by an elected Chairperson assisted by a Deputy Chairperson.