Free tools for shop owners
GST, invoices and profit — quick calculators that work on your phone. No signup.
Free GST Invoice Generator
Make a GST invoice with HSN codes and CGST/SGST or IGST — print or save as PDF.
GST Calculator
Add or remove GST at 5%, 18% or 40%, with the CGST/SGST or IGST split.
Profit Margin Calculator
Profit, margin and markup from cost and price — or the right price for the margin you want.
Which tool do you need?
GST invoice generator. Add your shop, the customer and the items, and you get a GST invoice with HSN codes and the CGST/SGST or IGST split. Print it or save it as a PDF. No signup.
GST calculator. Use it to add GST to a price or take it out of a price that already includes GST, at 5%, 18% or 40%, with the CGST/SGST or IGST split shown.
Profit margin calculator. Margin and markup are not the same. Margin is profit divided by the selling price; markup is profit divided by the cost. For example, an item bought for ₹80 and sold for ₹100 earns ₹20: that is a 20% margin and a 25% markup.
Learn the rules behind the tools
Read our guides on the GST invoice format and how to generate an e-way bill, or browse all guides.
When a calculator is not enough
These tools work one bill at a time. If you bill all day, HisaabNow does the GST maths on every bill and keeps your stock, udhaar and profit in one place.