Set up your GST and business details

Where it lives

Settings → Business & branding. Everything on this page appears on the invoices and quotations you produce, so it is worth getting right before you send the first one.

Add your GST number

Your GSTIN goes in one field on this page, and that single value drives the rest: the tax split on every invoice, the GSTIN printed on the PDF, and the figures that reach your GSTR-1.

Enter it once. You do not re-enter it per invoice, and you never choose a tax type by hand.

Your document numbers

Each kind of document has its own number series and its own prefix, which you set on the same page: invoices, quotations, credit notes, debit notes and delivery challans. A number looks like INV-0001/26-27 — the prefix, a four-digit count, and the financial year. Changing a prefix renumbers nothing you have already issued.

Invoices, credit notes, debit notes and delivery challans take their number only when you finalize, so a draft you abandon uses nothing up and the series has no gaps. Quotations are the exception: a quotation takes its number when you first save it, so one you start and then delete leaves a gap in the quotation series.

What your GSTIN tells us on its own

Type a valid GSTIN and Dukaaan works out the state it is registered in, straight from the number. That is the part that decides CGST and SGST against IGST, so it is the part worth getting right without you thinking about it.

The registered name and address are not fetched for you — we do not read the GST registry. The page links you to the portal's own free Search Taxpayer tool so you can check them there, and you type them once.

Your state decides the tax split

The state in your GSTIN is your place of supply. When you bill a customer in the same state, Dukaaan splits the tax into CGST and SGST; when you bill another state, it uses IGST.

This is why a customer's state matters as much as yours. Save it on the customer once and every future invoice gets the split right without you thinking about it.

Logo and bank details

Upload your logo on the same page and it appears on the PDF. Add your bank account or UPI details and they print in the payment section, so a customer paying you does not have to ask for them.

Your UPI ID is also what the QR code on the invoice encodes, so it is worth getting right. Dukaaan never sees or moves the money — your customer's UPI app pays your bank directly, and nothing passes through us.