Sivasagar city is governed by the **Sivasagar Municipal Board (SMB)**, which is responsible for civic infrastructure, sanitation, water supply, and local taxation. The board is divided into several wards, each represented by an elected ward commissioner.
At the district level, the administration is headed by the District Commissioner (DC), an IAS officer appointed by the Government of Assam, who oversees law and order, land revenue, and state-level developmental projects.
Politically, the city falls under the Sivasagar Legislative Assembly constituency, which elects a representative to the Assam State Assembly, and is part of the Jorhat Lok Sabha constituency for representation in the national Parliament.