GST billing and books for Indian shops

Run the shop's books,
not just the bills.

Invoices, quotations, credit notes, purchases and udhaar in one place, with GST worked out as you bill. Print exactly as you do today, send on WhatsApp, and hand your accountant a single file at the end of the quarter.

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Any device
Counter and pocket
GST ready
Item-wise, HSN, POS
Your data
Export any time
billbook.ragxen.com
Saturday, 9 August
Sri Lakshmi Textiles
Live
Today's sales
₹42,180
14 bills
This month
₹8.6L
312 bills
Udhaar
₹1,86,400
23 parties
Recent bills
Ravi Traders
INV-2026-27/61
₹8,450
Paid
Kumar Stores
INV-2026-27/60
₹12,900
₹5,000 due
Cash sale
INV-2026-27/59
₹1,240
Paid
What it does

Everything the counter runs on

Not a billing app with reports bolted on. The documents, the money and the compliance are the same set of records, so the numbers agree with each other by construction.

Billing

Every document a shop issues, on one numbering series that follows the standard convention.

  • GST tax invoices and retail cash bills
  • Quotations that convert to invoices
  • Credit and debit notes against the original bill
  • Item-wise GST, HSN codes and tax summaries

Money

What you sold, what you have been paid, and who is still holding your money.

  • Payments recorded against any bill
  • Udhaar by customer, sorted by how overdue
  • Purchases with input tax credit
  • Daily and monthly sales at a glance

Compliance

The details an auditor checks, handled while you bill rather than at year end.

  • Place of supply drives CGST, SGST or IGST
  • GSTIN validated to the check digit
  • Financial-year numbering with no gaps
  • One Excel export laid out as the GSTR-1 tables
Built for GST, not adapted to it

The details your accountant checks

Most billing software gets the arithmetic right and the compliance approximately right. The gap shows up at filing, when someone has to reconcile it by hand.

Place of supply on every bill
Decides CGST and SGST or IGST, and it is worked out from your state rather than guessed. A Karnataka shop delivering to Tamil Nadu bills IGST, correctly.
Numbering that survives an audit
One consecutive series per financial year. A cancelled bill is voided and kept, never deleted, so the series has no gaps to explain.
Credit notes that actually reduce
A credit note reduces your reported figures. It sounds obvious. Check whether your current software does it.
Send to accountant
One file, their format

An Excel workbook laid out as the tables a chartered accountant already works from, so nothing has to be transcribed.

SummaryPeriod totals to tie against
B2BRegistered buyers, by rate
B2C smallSummarised by place of supply
Credit and debit notesAgainst the original invoice
HSN summaryWith quantity and unit code
Documents issuedSeries, range, cancelled
PurchasesWith input tax credit
Counter and pocket

A phone is not a smaller counter

So the app does not pretend to be one. Long wholesale invoices, purchases and GST reports belong on a keyboard and a wide screen. The phone covers what happens away from the counter.

On the desk
  • Wholesale invoicing with item-wise GST
  • Purchases and input tax credit
  • Reports and the accountant export
  • Inventory, staff and settings
In your pocket
  • Today's sales and pending udhaar
  • Chasing payments, with WhatsApp reminders
  • Quick retail bills with item search
  • Sending any bill as a PDF
Web
Any browser. Install it to the desktop or home screen, nothing to download
Phone
Add to the home screen, opens like any other app
Install BillBook

One subscription covers every device your shop uses. Installing takes 20 seconds

Start billing this afternoon

Create your account, enter your shop details once, and issue your first GST invoice. Nothing to install on the counter machine.