Income tax

• Income Tax Department
• Income Tax E-filing:
• Tax Information Network

Commercial Taxes

• APCT
• TGCT

Business

• Service tax
• GST
• SEBI
• RBI

Professional Institutions

• ICAI
• ICSI
• ICMAI

Company Affairs

Stock Exchanges:

• NSDL
• NSE
• BSE
• Capital Market