Free GST Invoice Generator — Guwahati
Guwahati is North-East India's commercial gateway and a major hub for tea trading, oil refinery, and services. Create GST-compliant invoices with state code 18 pre-applied. CGST, SGST, and IGST auto-calculated. No signup.
GST Invoice Generator
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TAX INVOICE
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Invoice Details
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Place of Supply
| Item Description | Qty | Rate | Tax % | Amount | |
|---|---|---|---|---|---|
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GST Details for Guwahati
| Detail | Information |
|---|---|
| City | Guwahati |
| State | Assam |
| GST State Code | 18 |
| GSTIN Format | 18ABCDE1234F1Z5 |
| Key Industries | Tea Trading, Oil Refinery, Trading, Services |
| Business Type | Trading, Tea, Services |
GST Invoicing for Guwahati Businesses
Businesses registered in Guwahati are registered under Assam GST with state code 18. Every Guwahati-based business with an active GSTIN has a registration number starting with 18 (e.g., 18ABCDE1234F1Z5). This state code must appear on every tax invoice issued by the business.
Guwahati is North-East India's commercial gateway and a major hub for tea trading, oil refinery, and services. Businesses in Guwahati's dominant sectors — Tea Trading, Oil Refinery, Trading, Services — issue thousands of GST invoices every month. Each invoice must correctly classify the supply as intra-state or inter-state to apply the right tax.
| Transaction | Tax Applied | Example (18% GST on ₹1,00,000) |
|---|---|---|
| Guwahati seller → Assam buyer (intra-state) | CGST 9% + SGST 9% | ₹9,000 CGST + ₹9,000 SGST = ₹1,18,000 total |
| Guwahati seller → buyer in another state (inter-state) | IGST 18% | ₹18,000 IGST = ₹1,18,000 total |
| Export (buyer outside India) | Zero-rated with LUT | ₹0 GST, file LUT to export without IGST payment |
The invoice generator auto-detects intra vs inter-state from the buyer's GSTIN — Assam-registered buyers have GSTINs starting with 18.
Key Industries in Guwahati & GST Invoicing
Guwahati's economy is driven by: Tea Trading, Oil Refinery, Trading, Services. Here is how GST invoicing works for the primary business types in the city:
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Tea Trading
Businesses in the Tea Trading sector in Guwahati must issue GST-compliant tax invoices with GSTIN (starting with 18), HSN/SAC codes, and the correct CGST/SGST or IGST breakdown depending on the buyer's location.
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Oil Refinery
Businesses in the Oil Refinery sector in Guwahati must issue GST-compliant tax invoices with GSTIN (starting with 18), HSN/SAC codes, and the correct CGST/SGST or IGST breakdown depending on the buyer's location.
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Trading
Businesses in the Trading sector in Guwahati must issue GST-compliant tax invoices with GSTIN (starting with 18), HSN/SAC codes, and the correct CGST/SGST or IGST breakdown depending on the buyer's location.
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Services
Businesses in the Services sector in Guwahati must issue GST-compliant tax invoices with GSTIN (starting with 18), HSN/SAC codes, and the correct CGST/SGST or IGST breakdown depending on the buyer's location.
Frequently Asked Questions
What is the GST state code for Guwahati?
Guwahati is in Assam with GST state code 18. All businesses registered in Assam — including those based in Guwahati — have a GSTIN starting with 18, for example 18ABCDE1234F1Z5. The 13th character is the entity number (1 for first registration), 14th is always Z, and 15th is a check digit.
When does a Guwahati business charge CGST+SGST vs IGST?
Charge CGST + SGST when the buyer is also in Assam — their GSTIN will start with 18. Charge IGST when the buyer is in any other state or Union Territory. The GSTInvoices generator auto-detects this from the buyer's GSTIN, so you do not need to manually switch tax types.
What are the major industries in Guwahati and how do they handle GST?
Guwahati has key industries including Tea Trading, Oil Refinery, Trading, Services. Businesses in all these sectors must register for GST once their annual turnover crosses ₹40 lakh (goods) or ₹20 lakh (services). Every invoice must carry the supplier's GSTIN starting with 18, the buyer's GSTIN for B2B transactions, and the applicable HSN/SAC code.
Is the GST invoice generator free for Guwahati businesses?
Yes, completely free with no account required. Generate and download a GST-compliant PDF invoice — with all 16 mandatory CGST Rule 46 fields including GSTIN, HSN/SAC code, CGST/SGST/IGST breakdown — in under 30 seconds. No watermark, no hidden charges, no signup.
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Free, no signup. GST state code 18 pre-applied. CGST/SGST/IGST auto-calculated.