Billing, stock, payments, customers and GST in one fast system that runs on a computer in your shop. Phones and tablets on the same network can use it too.
From ₹499 a month. See plans.
BILL OS is built for the counter at six in the evening. Every step a cashier repeats has a key, and the shortcuts are on the screen.
Type their mobile number, or bill a walk-in customer.
Scan a barcode, search by name or SKU, or add by voice with Speak.
Park the bill and serve the next person. Held bills wait in their own list.
Cash, UPI, card, or split across more than one.
The receipt prints, stock updates and the customer’s balance is current.
Product screens from BILL OS, shown with demo data.
Every capability listed here is documented and tested in BILL OS. Each group links to a page that explains how it works.
Reports read the same records the counter writes, and export to Excel, CSV or Tally XML for your accountant.
The cash drawer opens each day with the change you start with, records cash taken in or out, and is counted at closing. A short drawer is flagged.
Guardian reads your own records and lists what is worth checking. Most items have an ordinary reason. Each one links to the bills behind it.
A billing system is only as good as its worst day. These are the checks BILL OS is built and tested against.
1,000,000
In our own benchmark on a generated shop with 1,000,000 bills and 500,000 customers, customer search by name took 13 milliseconds (median of five runs). Real shops and computers will vary.
Verified
See what each backup holds and check it. A tampered or incomplete backup fails verification and is never restored.
Copied
A safety copy is taken first, so a restore can never leave you worse off than before.
Rehearsed
Destroy-and-restore and a stop in the middle of a sale are rehearsed by automated drills.
Clothing, footwear, electronics, hardware and general stores, with one store or several.
Installed like any Windows program, for the signed-in user, with no administrator password. Installation guide · Hardware guide
Prices are per month, for a subscription to use the software. What each plan includes is confirmed with you before you pay. Applicable taxes and charges are stated at payment or on your invoice.
₹499/month
Ask us what Starter includes for your shop before you buy.
Ask about Starter Pay by invoice₹999/month
Ask us what Growth includes for your shop before you buy.
Ask about Growth Pay by invoice₹1,999/month
Ask us what Pro includes for your shop before you buy.
Ask about Pro Pay by invoiceBefore you pay. Subscriptions may automatically renew at the applicable renewal price unless cancelled before the renewal date. Cancelling stops the next renewal; access you have already paid for continues to the end of that period. You can request a refund within 15 days of purchase, subject to the Refund Policy. Applicable taxes and charges are stated at payment or on your invoice.
Online checkout on this website is not switched on yet. To buy, ask about a plan or request an invoice, and we will confirm the details with you.
Policies: Subscription and renewalCancellationRefundsPayment and billingTax and invoicesEULA
No, not for billing. BILL OS runs on a computer in your shop. WhatsApp messages and updates need a connection when they run.
A Windows 10 (version 1903 or later) or Windows 11 computer, 64-bit, with about 450 MB free. The setup installs Microsoft Edge WebView2 if it is missing. See system requirements.
Yes. Phones, tablets and other computers on the same network open BILL OS in a browser while it is running on the shop computer.
BILL OS records GST on bills, issues GST credit notes for returns and exchanges, records supplier returns as debit notes, and exports GSTR-1 data. Filing stays with you and your accountant. Live e-invoicing and e-way bill generation are not available for production use, so do not choose BILL OS for live e-invoicing or e-way bills today.
Yes. A business can have several stores, each with its own bills and numbering, sharing products and customers, with stock per store if you turn it on.
Yes. Import from Excel or CSV, including sizes and colours, batch and expiry. Every row is checked in a preview first.
Starter ₹499, Growth ₹999, Pro ₹1,999 a month. Ask us what each plan includes before you buy. See pricing.
Request software access and tell us about your shop. Installers are not offered for public download; see downloads.
BILL OS takes automatic backups, verifies each one, can copy them to a second location such as a USB drive, and keeps a safety copy before any restore. Keep a copy of your backups off the shop computer.
You do not need fifty reports to run a small business well. These ten numbers, each with a formula and a worked example from one shop's month, tell you whether you are making money, where it is stuck and what to do next.
Barcodes do not manage stock on their own; scanning at every movement does. Here is how to run labels, scanners, receiving and counts so the records match the shelf.
The two terms overlap so much that vendors use them interchangeably. The useful difference is which job sits at the centre: producing correct invoices, or running a fast counter with a cash drawer. Here is how to tell which one you need.
Tell us what you sell, how many counters you run and what you use today, and ask whether BILL OS fits the way your shop works.
Each Chameron Digital product is built for one kind of business, on the same principles.
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