GST registration in Chennai

Which authority registers a Chennai business for GST

Your Chennai GSTIN is a Tamil Nadu registration, taken against the place of business you declare, and Tamil Nadu is a single GST state, so the address does not change which authority registers you.

The thresholds are the ordinary ones: ₹40 lakh for goods and ₹20 lakh for services. Tamil Nadu is not a special category state, so there is no lower state figure and any page offering you one is wrong. Registration is compulsory regardless of turnover if you make inter-state supplies of goods or supply through an e-commerce operator, which describes most Chennai manufacturers and auto-ancillary suppliers from their first despatch.

We do not name a Tamil Nadu state GST portal or a central GST commissionerate for Chennai. Neither was verifiable to a standard worth publishing, and an unverified commissionerate name is worse than none.

The levy that catches Chennai businesses out

Profession tax in Chennai is a half-yearly local-body levy, not a monthly state deduction. This is the single most-missed fact about running a business here, and it costs two deadlines a year.

In Tamil Nadu, profession tax is levied and collected by municipalities and corporations. For Chennai, that is the Greater Chennai Corporation, which publishes a profession tax calculator on its own site. The levy runs for two half-years: 1 April to 30 September and 1 October to 31 March. Employees' tax must be remitted before 15 September and before 15 February. Everyone else pays before 30 September and before 31 March. Late payment attracts one rupee per month, or part of a month, for every ₹100 or part thereof of unpaid tax.

The rate is set locally, not by the state: the rate of tax payable is received and published by the executive authority once every five years. So there is no Tamil Nadu slab table, and there is no PTEC and no PTRC. Those are Maharashtra's certificates. If an adviser asks your Chennai business for a PTRC number, or sets up a monthly profession tax deduction on a state portal, they have brought another state's rules with them.

Notice how badly this fits a GST calendar. Your GSTR-1 and GSTR-3B are monthly or quarterly and fall on fixed days each month. Your Chennai profession tax falls twice a year, in September and February, on dates that appear nowhere in a GST compliance calendar. That mismatch is why it gets missed. We put both sets of dates in one calendar when we hand over.

Shops and establishments. A Chennai establishment registers under the Tamil Nadu Shops and Establishments Act, 1947, with the Labour Department at labour.tn.gov.in. It is a registration rather than an intimation. We keep this short and publish no fee, form number or portal path, because none of those is verified to a standard worth putting in front of you.

Trade licence. The municipal body is the Greater Chennai Corporation, which is the correct current name, not "Chennai Corporation" or "Chennai Municipal Corporation". It runs an online trade licence system at erp.chennaicorporation.gov.in/egtradelicense with new-application and renewal flows. Whether your activity is a licensable trade, and what the fee and renewal cycle are, we confirm with the Corporation rather than publish.

The four labour codes came into force on 21 November 2025, and a factory in Tamil Nadu is now regulated under the Occupational Safety, Health and Working Conditions Code, 2020 rather than the Factories Act. For an Ambattur or Oragadam engineering unit, that is the code your plant now answers to.

What a Chennai business usually needs alongside a GSTIN

The Greater Chennai Corporation profession tax enrolment and the two half-yearly remittance dates above. Registration under the 1947 Shops Act. A Udyam registration if you want MSME standing for payment-delay protection. And GST return filing from the month after your certificate, because an unfiled GSTIN gets suspended.

If you are incorporating alongside, one Tamil Nadu point is worth knowing: the state has two Registrar of Companies offices, Chennai and Coimbatore, and a Coimbatore-district company files at Coimbatore rather than Chennai. Neither was changed by the 2026 reorganisation of Registrar offices. See company registration in Chennai. For a manufacturer or exporter, an IEC usually follows the GSTIN closely.

How Regikart serves Chennai

We do not have an office in Chennai. Regikart's offices are Kolkata (head office), Delhi and Bengaluru, and Chennai work is done remotely from one of them. Documents come by WhatsApp or email on +91 70444 94804 or [email protected], Aadhaar e-KYC is completed by OTP, and REG-01 is filed on the GST portal, so there is nothing to hand in anywhere. Our Bengaluru office is the nearest of the three, but it is in Karnataka, a different GST state: it does not give you a Tamil Nadu place of business and cannot be used as one.