Free GST tools for shop owners
Make a GST invoice or a quotation, work out CGST + SGST or IGST at the current rates, look up HSN codes and check a GSTIN format. Everything runs in your browser, and nothing you type is sent to us.
The free tools
- GST invoice generator Make one GST invoice in your browser with HSN codes and the CGST + SGST or IGST split, then print it or save it as a PDF.
- Quotation maker Make a quotation with items, GST, a valid-until date and your terms, then print it or save it as a PDF.
- GST calculator Add GST to an amount or take it out of a price that includes GST, at the current rates, with the CGST + SGST or IGST split.
- HSN code finder Look up the HSN or SAC code and current GST rate of common shop items and services.
- GST bill format Every field a GST bill must show, a filled example, and blank Excel, Word and PDF formats to download.
- GSTIN format check Check that a GSTIN has the right state code, PAN pattern and check digit before you put it on a bill.
GST rates from 22 September 2025
Since 22 September 2025 (GST 2.0) most goods and services fall in four slabs: 0%, 5%, 18% and 40%. A few items have special rates, such as 3% and 0.25%. The GST calculator has the four slabs and takes any other rate you type, and the HSN code finder lists common items with their current rate. Rates were checked on 4 October 2026; some items depend on price, packing or other conditions, so confirm the rate for your exact item in the CBIC rate notification or with your CA.
GSTIN format check
This checks the format of a GSTIN (state code, PAN and check digit). To confirm that a GSTIN is active, search it on the GST portal.
Billing every day? Use the BillBabu app
Save your items and customers once, make GST bills and quotations on your phone, share the PDF on WhatsApp, and see sales and monthly GST reports.
From a calculator to a full bill
The calculator gives you the tax for one amount. A bill needs your items, HSN codes and business details too: see the GST bill format and the quotation format, or make one now with the free GST invoice generator. Billing every day? See the GST billing software, the quotation and estimate maker or pricing.