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GST Invoice in Tamil Nadu 2026 — State Code 33, GSTIN Format & Invoice Guide

Tamil Nadu (GST state code 33) is one of India's top manufacturing and industrial states. Businesses in Chennai, Coimbatore, Madurai, and Tiruchirappalli across automotive, textiles, IT services, and export manufacturing need correct GST invoices with state code 33 GSTIN.

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Tamil Nadu GST Overview

Detail Information
State Tamil Nadu
GST State Code 33
GSTIN Format 33ABCDE1234F1Z5
Capital Chennai
Key Cities Chennai, Coimbatore, Madurai, Tiruchirappalli, Salem
Major Industries Automotive, Textiles, IT/ITES, Leather, Engineering

Intra-State vs Inter-State Billing in Tamil Nadu

For Tamil Nadu businesses: Sales to buyers within Tamil Nadu (GSTIN starts with 33) → CGST + SGST at half each rate. Sales to buyers in other states → IGST at full rate. Example: A Chennai auto parts manufacturer (GSTIN 33ABCDE1234F1Z5) sells components worth ₹10,00,000 to a Bengaluru company (GSTIN 29XXXXX). Since the buyer is in Karnataka (state code 29), IGST at 18% = ₹1,80,000 applies. Same manufacturer selling to a Coimbatore buyer (GSTIN 33XXXXX) → CGST 9% + SGST 9% = ₹1,80,000 (split between Centre and Tamil Nadu government).

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FAQs

What is Tamil Nadu GST state code?

Tamil Nadu's GST state code is 33. All GSTINs of Tamil Nadu-registered businesses start with 33 (e.g., 33ABCDE1234F1Z5).

When do Tamil Nadu businesses charge IGST vs CGST/SGST?

CGST + SGST when selling to buyers with 33-prefix GSTIN (intra-state). IGST when selling to buyers with any other state prefix (inter-state). The GSTInvoices tool auto-detects this.

What are the major GST-registered industries in Tamil Nadu?

Automotive and ancillary (Chennai), Textiles and garments (Tiruppur, Coimbatore), IT/ITES services (Chennai), Leather goods (Chennai, Ambur), Engineering and manufacturing (Coimbatore).

What is the GST threshold for Tamil Nadu businesses?

₹40 lakh for goods-only businesses, ₹20 lakh for service and mixed businesses. Tamil Nadu is not a special category state, so standard thresholds apply.

Why Businesses Stop Using Excel for GST Invoices

Manual GST calculation mistakes

One wrong CGST/SGST split or a misapplied rate triggers notices and ITC denial for your buyer.

Slow invoice creation

Copying last month's Excel file, updating dates, recalculating — 20 minutes for what should take 30 seconds.

Formatting breaks on every device

Excel invoices look different on every printer and PDF converter. Clients complain about unreadable layouts.

No easy sharing or payment link

Sending PDFs over WhatsApp with no way for clients to pay directly slows down collections.

Incorrect tax type (IGST vs CGST+SGST)

Excel can't auto-detect intra vs inter-state supply. Wrong tax type = ITC rejected for your buyer.

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Disclaimer: The information in this article is for general informational purposes only and does not constitute professional tax, legal, or financial advice. GST rules and rates are subject to change. Consult a qualified CA or tax professional before making compliance decisions.

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