| Sl No | Office | Office Address | Contact Number |
| 1 | Commissioner of State Tax | 9th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785202 0471-2785203 |
| 2 | Special Commissioner of State Tax | 9th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785206 |
| 3 | Additional Commissioner 1 | 9th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785211 |
| 4 | Additional Commissioner (TPS HQ) | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785245 |
| 5 | Joint Commissioner (TPS HQ) | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785044 |
| 6 | Personal Division (Seniority and related works) | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785247, 0471-2785237 |
| 7 | Finance Section | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785234, 0471-2785224 |
| 8 | C & AG Cell | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785232, 0471-2785230, 0471-2785233 |
| 9 | Infrastructure Division | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785250, 0471-2785240 |
| 10 | Public Relations Cell | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785223, 0471-2785245, 0471-2785257 |
| 11 | Economic Intelligence Cell | 8th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785251, 0471-2785252, 0471-2785221 |
| 12 | Statistics & Performance Management Cell | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785183, 0471-2785185, 0471-2785263 |
| 13 | Deputy Commissioner (C&AG Cell) | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785287 |
| 14 | Deputy Commissioner (Legal Wing) | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785262 |
| 15 | Internal Audit &Internal Vigilance Cell | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785295, 0471-2785296, 0471-2785196, 0471-2785197 |
| 16 | Legal Cell | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785191, 0471-2785271, 0471-2785281, 0471-2785297 |
| 17 | ANPR Cell | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785284 |
| 18 | Taxpayer Services HQ | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785264, 0471-2785289 |
| 19 | Policy Division | 7th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785276, 0471-2785199 |
| 20 | Tapal | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785265, 0471-2785159, 0471-2785160 |
| 21 | Review Cell | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785173, 0471-2785167, 0471-2785164, 0471-2785171, 0471-2785169, 0471-2785385, 0471-2785385, 0471-2785384 |
| 22 | Deputy Commissioner (Policy Division) | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785300 |
| 23 | Deputy Commissioner (Infrastructure) | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785174, 0471-2785177 |
| 24 | Deputy Commissioner (Review Cell)- 1 | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785382 |
| 25 | Deputy Commissioner (Review Cell)- 2 | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785180 |
| 26 | Deputy Commissioner (Review Cell)- 3 | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785189, 0471-2785182 |
| 27 | Deputy Commissioner (Advance Ruling) | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785089 |
| 28 | Deputy Commissioner (Economic Intelligence) | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785178, 0471-2785179 |
| 29 | Advance Ruling Cell | 6th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785280 |
| 30 | IT Management Cell | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785149 |
| 31 | Cyber Forensic Cell | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | |
| 32 | IT Infrastructure Cell | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785010 |
| 33 | Deputy Commissioner (ITMC) | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | |
| 34 | Deputy Commissioner (Internal Audit & Internal Vigilance) | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785145 |
| 35 | Deputy Commissioner (IT Infrastructure Cell) | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785140 |
| 36 | Central Registration Unit (CRU) | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785146 |
| 37 | Intelligence Office | 5th Floor, Tax Towers, Karamana, Thiruvananthapuram-695002 | 0471-2785132, 0471-2785131, 0471-2785142, 0471-2785136, 0471-2785152, 0471-2785138, 0471-2785137 |
| 38 | Additional Commissioner, Appeals HQ | Appeal Headquarters, State GST Department, SGST Complex, Mattancherry, Bazar Road, Cochin-682 002 |
0484-2226735 |
| 39 | Additional Commissioner, Audit HQ | Audit Headquarters, State GST Department, SGST Complex, Mattancherry, Bazar Road, Cochin, Kerala – 682 002 | 0484-2226735 |
