| Association |
|---|
| Short Name | Description | Website URL |
| ICAI | Institute of Chartered Accountants of India |
http://www.icai.org |
| ICWAI | The Institute of Cost & Works Accountants of India |
http://myicwai.com |
| ICSI | The Institute of company Secretaries of India |
http://www.icsi.edu |
| Income Tax |
|---|
| Short Name | Description | Website URL |
| CBDT | Central Board of Direct Taxes | http://www.incometaxindia.gov.in |

| Ministries & Departments |
|---|
| Short Name | Description | Website URL |
| MOF | Ministry of Finance | http://www.finmin.nic.in |
| MOC | Ministry of Commerce | http://www.commerce.nic.in |
| MIT | Ministry of Information Technology | http://www.mit.gov.in |
| MLJ | Ministry of Law & Justice | http://www.lawmin.nic.in |
| MEA | Ministry of External Affairs | http://www.mea.gov.in |
| MPNA | Ministry of Petroleum and Natural Gas | http://www.petroleum.nic.in |
| PC | Planning Commission | http://www.planningcommission.nic.in |
| DGFT | Directorate General of Foreign Trade | http://dgft.gov.in/ |
| BICP | Bureau of Industrial Costs and Prices | http://www.tc.nic.in |
| Excise |
|---|
| Short Name | Description | Website URL |
| CBEC | Central Board of Excise & Customs | http://www.aces.gov.in/ |
| SEBI |
|---|
| Short Name | Description | Website URL |
| SEBI | Securities and Exchange Board of India | http://www.sebi.gov.in |
| ESI |
|---|
| Short Name | Description | Website URL |
| ESIC | E.S.I.Corporation | http://www.esichennai.org/ |
| PF |
|---|
| Short Name | Description | Website URL |
| EPFO | Employee’s Provident Fund Organisation | http://www.epfindia.com/ |
| SSI |
|---|
| Short Name | Description | Website URL |
| DIC | Tamilnadu - Department of Industries and Commerce | http://www.msmeonline.tn.gov.in/ |
| RBI |
|---|
| Short Name | Description | Website URL |
| RBI | Reserve bank of India | http://www.rbi.org.in |
| Company Affairs |
|---|
| Short Name | Description | Website URL |
| DCA | Department of Corporate Affairs | http://www.mca.gov.in/ |
| Stock Exchange |
|---|
| Short Name | Description | Website URL |
| NSDL | National Securities Depository Ltd. | http://www.nsdl.co.in |
| NSE | National Stock Exchange | http://www.nse-india.com |
| BSE | Bombay Stock Exchange | http://www.bseindia.com |
| CM | Capital Market | http://www.capitalmarket.com |
| Commercial Tax Department |
|---|
| Short Name | Description | Website URL |
| TN | TAMILNADU - COMMERCIAL TAXES DEPARTMENT | http://www.tnvat.gov.in/ |
| Others |
|---|
| Short Name | Description | Website URL |
| CSO | Central Statistical Organisation | http://mospi.nic.in |
| NCTI | National Centre for Trade Information | http://www.ncti-india.com |
| BES | Budget and Economic Survey | http://www.indiabudget.nic.in |
| IC | India Code(containing all Central Government statutes) | http://indiacode.nic.in/ |
| PI | Press Information | http://pib.nic.in |