If you run a kirana or grocery store, GST billing can feel like the most intimidating part of going digital. In practice, once your GSTIN and product tax rates are set up correctly, the software should handle the calculation — your job is mostly making sure the setup is right.
The three GST components, in plain terms
- CGST + SGST — charged when you sell to a customer in your own state, split roughly equally between the two.
- IGST — charged when you sell to a customer in a different state, as a single combined tax.
- Your billing software should auto-detect which applies based on your customer's state, so you never calculate it by hand.
What you need before your first GST bill
Enter your GSTIN once during setup, and assign the correct HSN code and tax rate (5%, 12%, 18%, or 28%) to each product. Get these two things right, and every future invoice calculates itself.
Filing GSTR-1 and GSTR-3B shouldn't mean re-entering data
The most common mistake is treating billing and GST filing as two separate jobs — billing in one app, then re-typing everything into an Excel sheet for your CA. If your billing software generates GSTR-1 and GSTR-3B reports directly from your invoices, filing becomes a five-minute download instead of a weekend chore.