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Departments

Commercial Taxes

Professional tax, weights and measures

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Contact information

Tamil Nadu Secretariat
Minister in-charge

Hon'ble Thiru P. Moorthy - Minister for Commercial Taxes and Registration

Headquarters & office address

Commissionerate of Commercial Taxes, Ezhilagam, Chepauk, Chennai 600005

Email address
[email protected]

Directorates, boards & agencies under this department

  • Commissionerate of Commercial Taxes
  • State GST Administration Division
  • Intelligence and Enforcement Wing
  • Commercial Taxes Appellate Tribunal

Related topics & services

Frequently asked citizen questions (FAQs)

What documents are required for new GST registration?

Goods and Services Tax (GST) registration is completed 100% online through the national GST common portal free of any government charges.

Mandatory threshold:

  • Aggregate annual turnover exceeding ₹40 Lakhs for businesses dealing exclusively in goods.
  • Aggregate annual turnover exceeding ₹20 Lakhs for service providers and inter-state suppliers.

Start online (fastest):

  • Visit the official GST portal (gst.gov.in).
  • Go to 'Services' -> 'Registration' -> 'New Registration'.
  • Enter your Permanent Account Number (PAN), email, and mobile number to generate a Temporary Reference Number (TRN).
  • Complete Part B application with business details.

Required documents:

  • PAN card and Aadhaar card of the proprietor/partners/directors.
  • Proof of principal place of business (Electricity bill, property tax receipt, or registered lease deed with landlord NOC).
  • Bank account proof (Cancelled cheque leaf or bank statement with account details).
  • Passport-size photographs.
  • Government fee: ₹0 (Completely free).
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How should businesses and employers remit Professional Tax?

Professional Tax is levied under Tamil Nadu local body laws on all individuals engaged in trades, businesses, callings, and salaried employments.

Start online (fastest):

Payment schedule:

  • Payable half-yearly (First half by September 30; Second half by March 31).
  • Employers must deduct professional tax from employee salaries based on prescribed income slabs and remit it to the local municipal body.
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Can citizens report fake bills, non-issuance of invoice, or GST tax evasion?

Charging GST without a valid GSTIN, issuing fake manual estimates, collecting tax on exempt commodities, or refusing tax invoices constitutes a punishable offense under GST law.

How to report:

  • File a grievance on the Tamil Nadu Commercial Taxes portal (ctd.tn.gov.in) under 'Tax Evasion Grievances'.
  • Report to the Central Board of Indirect Taxes and Customs (CBIC) grievance cell (cbic-gst.gov.in).
  • Email complaints with proof to support@ctd.tn.gov.in.

Information required:

  • Commercial merchant name, trade name, and exact physical address.
  • Clear photograph of the suspicious invoice or estimate slip.
  • The Commercial Taxes Enforcement Wing investigates such reports and imposes severe statutory penalties.
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