Income Tax :
Income Tax Department : http://www.incometaxindia.gov.in
CBDT : http://www.incometaxindia.gov.in/cbdt/org.asp

Indirect Tax :
Central Board of Excise & Customs : http://www.cbec.gov.in
Automation of Central Excise & Service Tax : http://www.aces.gov.in
Department of Sales Tax, Govt of Maharashtra : http://www.mahavat.gov.in
Directorate of Service Tax, Mumbai : http://www.servicetax.gov.in

Regulators :
SEBI : http://www.sebi.gov.in
RBI : http://www.rbi.org.in
CAG : http://www.cag.gov.in
IRDA : http://www.irda.gov.in
FMC : http://www.fmc.gov.in

Ministries :
Ministry of Finance : http://www.finmin.nic.in
Ministry of Corporate Affairs : http://www.mca.gov.in
Ministry of Commerce : http://www.commerce.nic.in

Stock Exchanges :
