--- title: "Indian GST invoice generator with CGST, SGST, IGST | AumnI tools" description: "Create an Indian invoice in rupees with GST at 5%, 18% or 40%, CGST plus SGST or IGST, a GSTIN field, a discount and line items. Drafts stay in your browser." url: https://aumnitools.com/in/tool/invoice-generator category: "Productivity" country: "India" updated: 2026-11-08 --- # Invoice Generator An Indian GST invoice splits the tax in two ways: CGST and SGST when the sale is inside one state, IGST when it crosses states. This generator opens in rupees at the 18% standard slab, asks for the supply type, adds a GSTIN box under your details and prints the split on the PDF. ## India rules and figures - After the 56th GST Council changes effective 22 September 2025, the rate structure is 5%, 18% and 40%, with nil-rated supplies at 0%. - The 5% merit rate applies to goods such as soap and packaged namkeen, as well as most medicines. - At 18%, the standard rate, the PIB backgrounder lists cement, televisions and motorcycles up to 350 cc among many other goods and services. - The 40% special rate is for goods such as aerated drinks, yachts and private aircraft. - A 9 October 2026 PIB backgrounder on GST process reforms describes the rate structure as still 5%, 18% and 40%. Sources: [PIB backgrounder: GST Reforms 2025](https://static.pib.gov.in/WriteReadData/specificdocs/documents/2025/sep/doc202594628401.pdf) (checked 2026-11-08); [PIB backgrounder: Next-Gen GST Process Reforms, 9 October 2026](https://static.pib.gov.in/WriteReadData/specificdocs/documents/2026/oct/doc_10142_20261009_21430401.pdf) (checked 2026-11-08) ## How the invoice generator works Each row multiplies quantity by rate. A discount then reduces the subtotal, and GST at the chosen slab is charged on what remains. For a sale within a state the tax is halved into CGST and SGST; between states it prints as one IGST line. Formula: `tax = (subtotal − discount) × GST rate; CGST = SGST = tax ÷ 2 within a state, or IGST = tax between states` - The slab menu offers Nil at 0%, Merit rate at 5%, Standard rate at 18% and Special rate at 40%. The page opens at 18%. - Supply type has two choices, Within the state (CGST + SGST) and Between states (IGST). Within a state each half is shown with half the rate, for example 9% and 9% at 18%. - If the two halves would differ by a paisa after rounding, SGST takes the odd paisa so CGST plus SGST equals the tax. - The GSTIN box is under From (Your Information). Its value prints as GSTIN followed by what you typed and is not validated. - Dates run day, month, year and the currency opens as INR. The built-in PDF font cannot draw the rupee sign, so the file shows INR instead, and the draft stays in your browser. ## How to use the invoice generator 1. **Set the number, dates and GST slab.** Give the invoice a number, check the dates, choose the slab for what you sell and set any discount. 2. **Choose the supply type.** Pick within the state for CGST plus SGST, or between states for IGST. The tax lines change to match. 3. **Enter your GSTIN and the buyer.** Type your GSTIN in your block, then the buyer's name and address. 4. **List the items and save.** Add each line with a description, quantity and rate in rupees, check the preview, then export the PDF or copy the text. ## Example: Two lines at 18% GST, within a state Charge 40 hours at 1,500 and 12 units at 850. The lines are 60,000.00 and 10,200.00, so the subtotal is ₹70,200.00 with no discount. GST at 18% is ₹12,636.00. Within one state it prints as CGST at 9% of ₹6,318.00 and SGST at 9% of ₹6,318.00, for a total of ₹82,836.00. Between states the same ₹12,636.00 appears as a single IGST line. ## When to use the invoice generator - **Billing a customer in your own state.** Keep the supply type within the state and the PDF shows CGST and SGST as two equal lines. - **Selling to another state.** Switch to between states so the whole tax prints as one IGST line. - **Goods on a different slab.** Choose 5% or 40% from the slab menu to match what you sell. - **Checking a vendor's bill.** Enter their items and discount and compare the CGST, SGST or IGST lines with theirs. ## What the invoice generator does not do - One GST slab applies to the whole invoice. Items on different slabs need separate invoices. - The tool does not choose the supply type or the slab for your goods. That depends on the place of supply and the item. - Cess, reverse charge, HSN codes and e-invoicing details are not included. - The GSTIN is printed as typed and is not validated. - The PDF shows INR in place of the rupee sign, and Hindi or other scripts print as a question mark. - Currency changes alter the symbol only, with no conversion. ## When something else is a better fit - **When you file GST returns and need e-invoices**, use accounting software that works with the GST portal. - **When you want income tax on a salary**, use the [Tax Calculator](https://aumnitools.com/tool/tax-calculator.md). - **When you are checking a discount first**, use the [Discount Calculator](https://aumnitools.com/tool/discount-calculator.md). ## Questions about the invoice generator ### When do I use CGST and SGST, and when IGST? Use CGST plus SGST for a supply within one state and IGST for a supply between states. The Supply type menu switches the tax lines to match. ### Which GST slab does the tool start with? 18%, the standard rate. The menu also has Nil at 0%, the merit rate at 5% and the special rate at 40%. ### How is 18% split within a state? Into CGST at 9% and SGST at 9%. On ₹70,200.00 each half is ₹6,318.00, and together they equal the ₹12,636.00 of tax. ### Where do I enter the GSTIN? In the GSTIN box under From (Your Information). It appears on the PDF under your address as typed. ### Why does the PDF say INR? The font built into the PDF cannot draw the rupee sign, so the file writes the currency code. The on-screen preview shows the symbol. ## Related tools - [Tax Calculator](https://aumnitools.com/tool/tax-calculator.md): Estimates US federal income tax, FICA and state tax for 2026 by filing status - [Discount Calculator](https://aumnitools.com/tool/discount-calculator.md): Stack discounts in order, add or strip tax, rank multi-buy deals and compare unit prices - [Currency Converter](https://aumnitools.com/tool/currency-converter.md): Converts 14 currencies, Bitcoin and Ethereum at daily rates, with a fallback table ## About this page Runs in your browser: what you enter is processed on this device and is not uploaded. The invoice and the PDF are built in your browser, and the draft stays in its local storage. Last checked against the tool's code on 2026-11-08. Interactive version: https://aumnitools.com/in/tool/invoice-generator