RubanTools

GST Invoice Generator

Create professional GST invoices with CGST/SGST or IGST breakdown - fill the form and print or save as PDF in seconds.

Invoice Details
Seller (From)
Buyer (To)
Line Items
Description Qty Rate (₹) GST % Amount

Fill the form and click Generate Invoice to see the preview here.

Everything a GST Invoice Needs

Auto Tax Calculation

Select intra-state or inter-state supply and the tool automatically splits GST into CGST+SGST or applies IGST at the full rate.

Print & Save as PDF

Click Print - modern browsers let you save directly as PDF. No software, no signup, no watermark. Your invoice, your data.

Multiple Line Items

Add as many products or services as needed, each with its own GST rate. Totals update automatically as you add rows.

Invoice Ready in 4 Steps

01
Enter Invoice Details

Add invoice number, date and whether it's intra-state or inter-state supply.

02
Fill Seller & Buyer

Enter your business details and the customer's name, address and GSTIN.

03
Add Line Items

Add products or services with quantity, rate and the applicable GST rate.

04
Print or Save PDF

Click Generate, review the preview, then Print - save as PDF from the browser dialog.

GST Invoice Generator Free Professional Invoices

The Goods and Services Tax (GST) was introduced in India on 1 July 2017, replacing a fragmented system of central and state levies with a unified indirect tax. Every GST-registered business with an annual turnover above Rs 40 lakh (Rs 20 lakh for service providers) is required to issue a proper tax invoice for each supply of goods or services. The invoice must contain specific fields prescribed under Rule 46 of the CGST Rules, 2017, including GSTIN, HSN/SAC codes, and itemised tax breakdowns.

CGST, SGST, and IGST Explained

GST is a dual structure. Intra-state supplies attract Central GST (CGST) and State GST (SGST) in equal halves - for example, 18% GST splits into 9% CGST and 9% SGST. Inter-state supplies attract Integrated GST (IGST) at the full rate, collected by the Centre and later apportioned. This distinction determines which tax line appears on the invoice. Incorrect classification is one of the most common errors flagged during GST audits and can lead to notices from the GST department.

Who Uses This Tool

Freelancers, small business owners, consultants, and traders across India use free invoice generators to avoid expensive billing software subscriptions. As of 2024, India has over 14 million GST-registered taxpayers. This tool lets you fill seller and buyer details, add line items with quantity and rate, select the GST rate, and instantly generate a print-ready invoice with accurate CGST/SGST or IGST breakdowns - all without creating an account or paying a fee.

Frequently Asked Questions

For intra-state supply (buyer and seller in the same state), GST is split equally into CGST and SGST. For inter-state supply (different states), IGST is charged at the full rate. Example: 18% GST intra-state = 9% CGST + 9% SGST. Inter-state = 18% IGST.

Yes, if you are a GST-registered business you must issue a tax invoice for every taxable supply. Unregistered businesses issue a bill of supply instead. The invoice must include GSTIN, HSN/SAC code, tax breakup, and the total in words.

Mandatory fields: supplier name, address, GSTIN; buyer name, address, GSTIN (B2B); invoice number and date; HSN/SAC code; description, quantity and value; taxable value; CGST/SGST or IGST rate and amount; total invoice value in words.

HSN (Harmonised System of Nomenclature) codes identify goods. SAC (Services Accounting Code) codes identify services. Businesses with turnover above ₹5 crore must use 6-digit codes; others use 4-digit codes. Include the HSN/SAC in the description column of each line item.

For goods: 3 copies - original for buyer, duplicate for transporter, triplicate for supplier. For services: 2 copies - original for buyer, duplicate for supplier. Issue within 30 days of delivery (45 days for banks/NBFCs).