GST Invoice Generator
Create GST-compliant invoices for your business with automatic tax calculations, HSN/SAC code support, and print-to-PDF capability. Perfect for Indian small businesses, freelancers, and service providers.
Introduction
Need to create professional GST-compliant invoices for your Indian business? This free invoice generator handles all the complexity—automatic tax calculations, HSN/SAC codes, CGST/SGST/IGST splitting based on transaction type, and print-to-PDF capability. Perfect for small businesses, freelancers, consultants, traders, and service providers who need proper tax invoices without expensive accounting software. Simply enter your business details, customer information, add items with their HSN/SAC codes and GST rates, and the tool generates a complete invoice with all mandatory fields required under GST law. The generator automatically determines whether to apply CGST+SGST (for intra-state sales) or IGST (for inter-state sales) based on your place of supply. It calculates taxable values, tax amounts, and totals instantly, even converting the final amount into words for Indian currency format. Everything happens in your browser—your business data, customer details, and pricing information stay completely private on your device. Whether you're issuing invoices for products with different GST rates, creating bills for services, or documenting B2B transactions that require proper GSTIN and HSN/SAC codes, this tool ensures your invoices meet all compliance requirements while saving you time and effort.
Who Should Use This Tool?
- Small business owners creating daily invoices
- Freelancers and consultants billing clients
- E-commerce sellers generating order invoices
- Retailers without accounting software
- Service providers issuing tax bills
- Traders preparing B2B invoices
- Startups managing early-stage billing
- Solopreneurs handling own accounts
- Part-time business operators
- Anyone needing GST-compliant invoices quickly
How This Tool Works
The GST Invoice Generator creates compliant tax invoices by collecting essential information and applying GST rules automatically. Start by entering your business details: name, address, GSTIN (15-digit GST registration number), state name, and state code. Then add customer information: name, billing address, GSTIN (for B2B transactions), and place of supply. The place of supply is critical—if it matches your state, the tool applies CGST+SGST; if it's a different state, it applies IGST. Next, add invoice items: descriptions, HSN or SAC codes (4 or 6-digit classification codes for goods and services), quantities, unit rates, and applicable GST percentages (common rates are 5%, 12%, 18%, 28%, or 0% for exempt items). The generator automatically calculates taxable value, GST amount, and line totals for each item. It sums everything up to show subtotal, total tax (broken into CGST/SGST or IGST), and grand total. The final amount is converted to words in Indian format (e.g., 'Rupees Fifty Thousand Two Hundred Thirty Four Only'). You can review the complete invoice on screen, then print it directly or save as PDF using your browser's print dialog (select 'Save as PDF' or 'Print to PDF' option) for emailing to customers or record-keeping. All mandatory GST invoice fields are included: invoice number and date, supplier and recipient details with GSTIN, HSN/SAC codes, taxable values, tax rates and amounts, place of supply, and signature space. Everything calculates instantly as you type, and no data is sent to any server—complete privacy for your business information.
Try GST Invoice Generator Now
Use the interactive tool below to get instant results
Tip: Use your browser's Print function to save the invoice as PDF. Select "Save as PDF" or "Print to PDF" in the print dialog.
Business Details
Customer Details
Invoice Details
Items / Services
| Description | HSN/SAC | Qty | Rate | Disc% | GST% | Tax Type | Total | |
|---|---|---|---|---|---|---|---|---|
| ₹0.00 |
[Business Name]
[Business Address]
GSTIN: [GSTIN]
State: [State] (Code: [Code])
Tax Invoice
Invoice No: [Invoice Number]
Date: 31/1/2026
Bill To:
[Customer Name]
[Customer Address]
Place of Supply: [Place of Supply]
| S.No | Description | HSN/SAC | Qty | Rate | Disc% | Taxable Value | CGST | SGST | Total |
|---|---|---|---|---|---|---|---|---|---|
| 1 | - | - | 1 | ₹0.00 | 0% | ₹0.00 | ₹0.00 | ₹0.00 | ₹0.00 |
Amount in Words: Zero
This is a computer-generated invoice and does not require a signature.
For [Business Name]
Authorized Signatory
How to Use GST Invoice Generator
Enter Business Information
Fill in your business name, address, GSTIN, state name, and state code. This appears at the top of the invoice as the seller information.
Add Customer Details
Enter customer name, billing address, GSTIN (if B2B), and place of supply. The place of supply determines whether CGST+SGST or IGST will be applied.
Add Items and Configure Taxes
Add items or services with descriptions, HSN/SAC codes, quantities, rates, and GST percentages. Choose CGST+SGST for intra-state or IGST for inter-state transactions.
Print or Save as PDF
Review the automatically calculated totals, tax breakdowns, and amount in words. Click "Print Invoice" to print directly or save as PDF using your browser's "Save as PDF" option in the print dialog.
Use Cases for GST Invoice Generator
Small Business Owners Creating Daily Invoices
Running a small retail shop or service business means issuing invoices daily. Manually creating invoices becomes tedious when you have to calculate GST, format properly, and ensure compliance. A stationery shop owner selling items worth ₹5,000 with 12% GST can use this generator to instantly create a professional invoice with correct CGST and SGST calculations.
Freelancers and Consultants Billing Clients
Freelancers working with clients across different states need to determine whether to charge IGST (inter-state) or CGST+SGST (intra-state). The generator automatically handles this based on place of supply, ensuring correct tax application for each client invoice.
E-Commerce Sellers Generating Invoices
Online sellers shipping dozens of orders daily need efficient invoice generation. While marketplaces provide basic invoices, sellers maintaining their own records or serving B2B customers require proper GST documentation with correct HSN codes and tax breakdowns.
Key Features
Complete GST Compliance
Includes all mandatory fields required under GST law: GSTIN, HSN/SAC codes, place of supply, tax breakdown, and invoice numbering.
Automatic Tax Calculation
Instantly calculates CGST, SGST, or IGST based on place of supply. Handles multiple tax rates in a single invoice.
HSN/SAC Code Support
Add 4 or 6-digit HSN codes for goods and SAC codes for services, ensuring proper product/service classification.
Amount in Words
Converts final total to Indian currency words format automatically (e.g., "Rupees Fifty Thousand Only").
Print and PDF Export
Print invoices directly or save as PDF using your browser's built-in print-to-PDF functionality for emailing to customers or maintaining digital records.
Browser-Based Privacy
All data processing happens in your browser. Business details and customer information never leave your device.
Frequently Asked Questions
Is this GST invoice legally valid for my business?
The invoices follow GST-prescribed format and include all mandatory fields. They are valid for business transactions in India. However, you must ensure your GSTIN is valid, HSN/SAC codes are correct for your products/services, and you choose appropriate GST rates. The tool formats correctly but doesn't verify business registration or product classifications.
What fields are mandatory on a GST invoice?
Required fields include: invoice number and date, supplier and recipient GSTIN, complete addresses, HSN/SAC codes, quantity and unit of measurement, taxable value, tax rates and amounts (CGST/SGST or IGST), place of supply, total amount in words, and signature. This generator includes all these fields automatically.
When should I use IGST instead of CGST and SGST?
Use IGST for inter-state supplies (when supplier location and place of supply are in different states). Use CGST+SGST for intra-state supplies (same state). The generator automatically applies the correct tax type based on your state and the place of supply you enter.
Can I customize invoice numbers and dates?
Yes, you can set your own invoice number sequence and select any date. For compliance, ensure invoice numbers are sequential and don't have gaps. The date should reflect the actual supply date or invoice issue date.
Are my business and customer details saved anywhere?
No. All invoice generation happens in your browser using JavaScript. Business names, addresses, GSTINs, customer details, and pricing information never get transmitted to any server or stored in any database. Your business data remains completely private on your device.