What is a GST-compliant invoice in India?

A GST-compliant invoice must include: supplier name, address, and GSTIN; buyer name and GSTIN (if registered); unique invoice number; invoice date; HSN/SAC codes for each item; taxable value; applicable GST rate; CGST, SGST or IGST amounts; and the total amount payable. For intra-state supplies, CGST+SGST apply; for inter-state, IGST applies.

What is the difference between CGST, SGST, and IGST on an invoice?

For intra-state transactions (buyer and seller in the same state), GST splits equally into CGST (Central GST) and SGST (State GST). For inter-state transactions, the full GST applies as IGST (Integrated GST). Example: 18% GST for intra-state = 9% CGST + 9% SGST; for inter-state = 18% IGST.

Can I use this invoice generator for a bill of supply?

This tool generates tax invoices for GST-registered businesses. A bill of supply (used by composition dealers or for exempt goods/services) does not include a separate tax line. If you are a composition dealer, you should issue a bill of supply — not a tax invoice — and cannot collect GST from customers.

How do I number my invoices to comply with GST rules?

GST invoice numbers must be sequential, unique within a financial year (April to March), and can contain letters, numbers, and slashes (max 16 characters). A common format is: INV/FY2026-27/001. You must not repeat invoice numbers within a financial year.

Invoice Generator India 2026 — Free Online Tool

Q: Is there a time limit to issue a GST invoice?

For goods, a GST invoice must be issued at or before delivery. For services, it must be issued within 30 days of service completion (45 days for banking and financial services). Late invoice issuance can attract penalties under GST law.

Your Business Details

Company Name *

GSTIN

Address

Phone

Client Details

Client Company Name *

Client GSTIN

Client Address

Invoice Details

Invoice No. *

Invoice Date *

Due Date *

GST Type

Line Items

Payment Details

Bank Name

Account No

IFSC Code

UPI ID

Notes / Terms

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How to Use This Invoice Generator

Enter Your Business Details

Fill in your company name, GSTIN, address, and contact details. These appear in the "From" section of the invoice.

Add Client Information

Enter the client name, GSTIN (if they are GST-registered), and billing address. The client GSTIN is required to claim ITC.

Fill in Invoice Details and Line Items

Set a unique invoice number, date, due date, and GST type. Add line items with description, quantity, rate, and GST rate (0%, 5%, 12%, 18%, or 28%).

Generate and Print

Click Generate Invoice, review the output, then print or save as PDF using your browser's print function (Ctrl+P).

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Frequently Asked Questions

What is a GST-compliant invoice?+

A GST-compliant invoice must include: supplier GSTIN, buyer GSTIN (if registered), sequential invoice number, invoice date, HSN/SAC code, taxable value, GST rate, and CGST+SGST or IGST amounts. Missing any of these can prevent the buyer from claiming Input Tax Credit (ITC).

When do I use CGST+SGST vs IGST?+

Use CGST + SGST when the supplier and buyer are in the same state (intra-state transaction). Use IGST when the supplier and buyer are in different states or for export transactions. The total tax rate is the same — only how it is split differs.

What is the time limit to issue a GST invoice?+

For goods, the invoice must be issued at or before delivery. For services, it must be issued within 30 days of service completion (45 days for banking services). Late invoices can attract penalties under GST law.

Can I issue an invoice without GSTIN?+

If you are not GST-registered (turnover below ₹40 lakh / ₹20 lakh for services), you issue a regular invoice without GST. You cannot collect GST without registration. However, if your turnover crosses the threshold, GST registration and invoicing is mandatory.

How do I format invoice numbers for GST compliance?+

Invoice numbers must be unique and sequential within a financial year (April to March). Use formats like INV/2026-27/001. They can contain letters, numbers, and slashes — maximum 16 characters. Do not reuse numbers within the same financial year.

Invoice Generator India 2026

How to Use This Invoice Generator

Enter Your Business Details

Add Client Information

Fill in Invoice Details and Line Items

Generate and Print

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Frequently Asked Questions

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