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GST billing software

Free GST billing software that gets the tax right

Finex Business is GST billing software for small and growing Indian businesses. Add what you sell once, and every invoice calculates CGST, SGST or IGST for you, keeps stock in step and shows you who still owes money. It is free to start, and it also gives you an online store.

What GST billing software should do for you

Good billing software removes the manual work that causes mistakes. At minimum it should pick the right tax, number your invoices correctly and keep your records in one place.

  • Choose CGST + SGST or IGST automatically from your state and your customer's state (place of supply)
  • Support tax-inclusive (MRP) and tax-exclusive prices
  • Number invoices in a clean sequence for each financial year
  • Produce a printable, professional invoice and a PDF you can email
  • Show paid, partly paid and overdue invoices at a glance

How Finex Business handles GST

GST rates and rules change, so always check the current rate for your goods or services on the official GST portal or with your tax professional.

  • Place-of-supply aware tax: intra-state sales split into CGST and SGST, inter-state sales use IGST
  • Tax-inclusive and tax-exclusive pricing on every line
  • Financial-year invoice numbers such as INV-2026-27-0001
  • Bills of supply for composition dealers and exempt supplies, export invoices with or without IGST, reverse charge, and UTGST for union territories
  • Customer records with GSTIN and billing state saved once and reused
  • Sales, receivables and tax summary reports with date filters and export

More than a billing tool

Most billing tools stop at the invoice. Finex Business keeps going: the same catalog that powers your invoices powers a free online store or showcase page, so customers can find you on Google and enquire on WhatsApp.

  • Inventory with low-stock alerts, linked to your sales
  • Flexible pricing for products, services and rentals: per unit, per hour, by duration, distance or volume
  • Enquiry and WhatsApp leads delivered to your dashboard
  • A shareable link and QR code for your shop counter and social profiles

Who it is for

Retail shops, boutiques, service businesses, rental businesses, freelancers and studios. If you issue GST invoices and want a simple way to also be found online, Finex Business is built for you.

FAQ

Common questions

Is this GST billing software really free?

Yes. You can create an account, issue invoices, manage your catalog and customers and publish an online store without paying or adding a card.

Does it support CGST, SGST and IGST?

Yes. Finex compares your state with your customer's state and applies CGST + SGST for same-state sales or IGST for inter-state sales.

Can I send invoices by email?

Yes. You can email an invoice to your customer from your business name with the PDF attached.

Does it replace my accountant?

No. It helps you prepare accurate invoices and tax summaries. You remain responsible for your filings and should consult a qualified professional where needed.

Start billing and selling online — free

Create your account in a minute. No card needed.