Built for the person doing the billing

Most GST software is built as though the person using it is an accountant. In practice it is usually the shop owner at closing time, a freelancer between projects, or one person at a wholesaler who handles every invoice that goes out. They do not need more fields. They need the software to know the rules.

So the decisions that carry tax consequences are made for you. Choose the customer and the place of supply follows from their state. From that single fact, the software knows whether to split the rate into CGST and SGST or charge it whole as IGST. You see which one applied, in colour, before you save.

Underneath, every amount is a whole number of paise. Rupees stored as decimals drift, and a tax figure that drifts by a paisa is a summary that does not tie out and a question you cannot answer during an audit. The tax engine is covered by tests that check worked examples: an inclusive price of ₹1,180 at 18% must yield exactly ₹1,000 taxable and ₹180 tax, and CGST must always equal SGST even on an odd amount.

Documents are treated as records rather than views. The customer name, address, and HSN codes are copied onto each invoice when it is issued. Correct a customer six months later and the invoice you gave them stays exactly as it was, because that is what a tax invoice has to do.

It is not a filing service. It prepares GSTR-1 and HSN summaries you can reconcile against, but the return is filed on the GST portal, and a qualified professional should review your position before you submit.

It is not an accounting system. There is no general ledger, no input tax credit matching, and no bank reconciliation. It covers invoicing, stock, and getting paid — and tries to do those without asking you to think about tax law.