The State Tax Department has structured Chandauli into 2 distinct geographical sectors to streamline tax administration and tax compliance under the Goods and Services Tax (GST) framework. Below is the updated sector-wise list outlining the boundary definitions for all 16 sectors across Chandauli district.
| Sector | Updated Geographical Area of Sectors in the State Tax Department |
| Sector-1 | From Padao to Dadi on G.T. Road via Chandasi Police Outpost, Mughalsarai up to Chakia Road Crossing, and from Alinagar Crossing to Naubatpur Bihar border, the entire area on the left side; and the entire area of Ramnagar Industrial Area Phase-2. The main markets included north of G.T. Road are Chandasi, Mughalsarai, Alinagar, Chandauli, and Sakaldiha, Chahaniya, Dhanapur, Kamalpur, and Syedraja respectively, as well as the entire area of Ramnagar Industrial Area Phase-2. |
| Sector-2 | From Padao on G.T. Road via Chandasi Police Outpost, Mughalsarai up to Chakia Road Crossing, and from Alinagar Crossing to Naubatpur Bihar border, the entire area on the right side. From Padao via Ramnagar Road through Katesar onwards to the Chandauli district border (the left side of the road and the right side area which is not in Varanasi district), and via Bhiti up to Ramnagar Bypass (Chandauli district area); and again the entire area falling south of Ramnagar Bypass to Chakia Road Bypass, the Ramnagar Industrial Area falling south of Ramnagar Bypass to Chakia Bypass (excluding Ramnagar Industrial Area Phase-2), and adjacent areas (of Chandauli district). The main markets in this sector are Padao, Dadi, Chandasi (south of G.T. Road), Mughalsarai (south of G.T. Road), Ind. Estate Ramnagar, Baburi, Chakia, and Saidpur, as well as the remaining area of the district. |