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One to Many

Billing software for small businesses, stores and dealers.

Bill at the counter, invoice from the office, and keep stock, customers, money owed and GST together. For single stores, retail chains, dealers and distributors.

O2MOne to Many
Sample data

Counter

The screen your cashiers bill on.

O2M

Store 1

Counter 1

Store 1 Cashier

Shift open 10:11 am

Scan or search product (F2)
ItemQtyAmount

A4 Long Notebook 200 pages

NB-A4-200

−2+
₹198.00

Basmati Rice 5 kg

RICE-5KG

−1+
₹682.50

Cotton Round Neck T-Shirt (M)

TEE-M

−1+
₹418.95
Items3 lines · 4 units
Taxable value₹1,225.79
CGST + SGST₹73.66
Total₹1,299.00Round off ₹-0.45

Customer (F4)

Walk-in

Phone number
HoldPay (F9)
ReturnReprintShift
Explore POS and Counter Billing

What is billing software?

Billing software creates the bills, invoices and receipts your business gives to customers, works out the tax, and records what was sold and what is still owed. In India it also has to handle GST: HSN codes, CGST, SGST and IGST, credit notes, e-invoices and e-way bills.

O2M Billing and POS covers both ways of selling. A shop bills at a fast counter with a thermal printer. A dealer or distributor takes orders from an office, sends A4 tax invoices and follows the money owed. Both run on the same products, customers and reports.

Every sale becomes an order with its own invoice. Stock goes down at the outlet's warehouse, and the invoice flows into your GST reports and accounting export. Start with what you need, and add Warehouse Management, Purchasing or the Ecommerce Suite later on the same account.

What Billing and POS does for you.

Fast at the counter

Scan, take cash, UPI or card, and print a receipt without leaving the screen.

The right document

Tax invoices, bills of supply, quotations, challans and credit notes from the same order.

Money under control

See who owes what, set credit limits, and hold orders until a manager approves.

Ready for GST

HSN, e-invoice, e-way bill and GST reports come from your bills.

Fast billing at every counter.

Cashiers go straight to the counter, with no other menus to learn. Read more about POS software.

O2M

Store 1

Counter 1

Shift open 10:11 am

Scan or search product (F2)

Item

Basmati Rice 5 kg₹682.50
Cotton Round Neck T-Shirt (M)₹418.95
A4 Long Notebook × 2₹198.00

Total

₹1,299.00

Pay (F9)

Scan and bill

Scan a barcode, type a SKU or search by name. Hold a bill for the next customer and bring it back later.

Take any payment

Cash with the change shown, UPI, card, or a mix. Receipts print on 80 mm or 58 mm rolls.

Limits and approvals

Each outlet sets limits for discounts, price changes and refunds. Above a limit, a store manager approves with a PIN on the same screen.

Billing without internet

With offline billing on, cash, UPI and card sales continue, and bills are sent to O2M when the connection is back.

Take orders from anywhere and bill on credit.

Many businesses sell only from an office or godown. O2M runs that whole flow without a counter. See billing for dealers and distributors.

One to ManySample data

Invoices and documents

Every sales document in one list.

Invoices today

214

Billed today

₹3.84L

Credit notes

6

MG1-2627-00931Paid
OF1-2627-00412Part paid
CN-2627-00027Issued
QT-2627-00118Sent

Sales sources

Record where each sale came from: walk-in, phone, WhatsApp, salesman, dealer or exhibition.

Invoice point

Make the invoice when the order is made, or when goods leave. Each outlet can follow the company setting or its own.

Customer search

Find a customer by phone, name or GSTIN, or add a new one with their GSTIN and address.

Goods on approval

Send goods on a delivery challan, bring back what returns, and invoice the rest.

Know who owes what.

Every invoice, receipt and credit note builds the customer's ledger. Read more about customer accounts and credit control.

One to ManySample data

Money owed

Customer ledgers, ageing and credit limits.

Total owed

₹18.4L

Overdue

₹4.2L

Received this month

₹26.7L

Sharma TradersWithin limit
Metro RetailNear limit
City MartOn hold
Sai DistributorsWithin limit

Ledgers

A running balance for each customer, with open invoices and a statement to download or send.

Ageing

Every customer with a balance, split by how late it is, with their credit limit and last receipt.

Credit limits

A sale over the limit, or for a customer with overdue bills, waits until a manager approves it.

Collection

UPI QR, payment links and virtual accounts through your own gateway.

Run one store or many.

Add outlets and counters, give each person the right role, and see every store. Read more about multi-store billing.

One to ManySample data

Stores and teams

Every outlet and counter today.

Sales today

₹6.42L

Bills today

1,186

Counters open

9 of 10

MG RoadOpen
IndiranagarOpen
JayanagarOpen
Whitefield1 to close

Outlets

Each with its own counters, invoice numbers and limits.

Roles

Cashiers and store managers work only in the outlets they are given.

Teams

Split a company into stores or sales teams that each see only their own work.

Shifts

Cash counts and differences for every counter, with the approver saved.

Stay ready for GST with every bill.

Create the right document for every sale. See GST billing software for the detail.

One to ManySample data

GST

E-invoices and e-way bills from your sales.

Taxable value

₹24.6L

GST collected

₹2.94L

E-invoices

318

OF1-2627-00412Generated
OF1-2627-00412Valid to 2 Nov
OF1-2627-00409Generated
DC-2627-00063Valid to 1 Nov

HSN and GST rates

O2M suggests a GST rate from the HSN and the price, and marks it so you can check it.

E-invoice

Generate the IRN through your GST provider or O2M's, and print the QR on the invoice.

E-way bill

Make e-way bills for invoices, change the vehicle when needed, and see invoices that still need one.

GST reports

Sales by rate, B2B and B2C, credit and debit notes, ready for your returns.

Simple from the first day.

Step 1

Set up your business

Add your company, GSTIN, outlets and staff with a guided checklist.

Step 2

Add your products

Use the short product form, or import a CSV or Excel file.

Step 3

Start billing

Bill at the counter, or create orders and invoices from the office.

Step 4

Track and file

Follow money owed, close shifts, and take your GST reports.

Every bill your business needs.

Print a thermal receipt at the counter, or send an A4 tax invoice to a business customer. Quotations, delivery challans and credit notes use the same details, so nothing is typed twice.

O2MOne to Many
Sample data

Thermal bill

The 80 mm receipt printed at the counter. 58 mm rolls work too.

Thermal receipts

80 mm and 58 mm rolls, printed from Chrome or Edge.

A4 tax invoices

HSN, taxes, your own fields and e-invoice details.

Bill of supply

For composition businesses.

Send it on

By WhatsApp, SMS or e-mail.

Which document do you need?

Each document starts from the same customer and items, so nothing is typed twice.

Which document do you need?
DocumentUse it for
Thermal receiptCounter sales, on 80 mm or 58 mm rolls
A4 tax invoiceBusiness customers, deliveries, and anything you e-mail or file
Bill of supplySales by businesses under the composition scheme
QuotationOffering prices, valid until a date
Proforma invoiceAsking for payment or an advance before delivery
Delivery challanSending goods on approval, for a job, or between branches
Credit noteReturns and price reductions after the invoice
Debit noteA price difference charged after the invoice

What each business uses.

What each business uses.
BusinessWhat you useRead more
Single shopA billing counter, receipts, stock and GST reportsSingle store billing
Chain of storesOutlets, a team per store, offline billing and shift reportsMulti-store billing
Distributor or traderOrders and invoices from the office, money owed, credit limits, e-invoice and e-way billDealer billing

Everything in one place.

Counter and POS

  • Barcode scan and product search
  • Hold and recall bills
  • Discounts within limits
  • Store manager PIN approval
  • Returns and exchanges on one screen
  • Same-day voids
  • 80 mm and 58 mm thermal receipts
  • Billing without internet

Sales documents

  • A4 tax invoices
  • Bills of supply
  • Credit and debit notes
  • Quotations and proformas
  • Delivery challans
  • Invoice at order or at dispatch
  • Invoice numbers per outlet
  • Send by WhatsApp, SMS or e-mail

Orders

  • Orders from the office
  • Sales sources: walk-in, phone, WhatsApp, salesman, dealer and exhibition
  • Customer search by phone, name or GSTIN
  • Prices with or without GST
  • Returns of office orders

Stores and teams

  • Outlets with their own counters
  • Cashier and store manager roles
  • Teams that see only their own work
  • Shifts and cash counts
  • Shift reports and counter sales
  • Registered devices with PIN switch

Customers and money owed

  • Customer ledgers and statements
  • Receipts and ageing
  • Opening balances
  • Reminders sent by you
  • Credit limits and manager-approved holds

Payments

  • Cash, UPI and card
  • Counter UPI QR
  • Payment links
  • Virtual accounts
  • Your own gateway: Razorpay, Cashfree, PhonePe or Paytm

GST

  • HSN with a suggested GST rate
  • E-invoice with IRN and QR
  • E-way bill
  • Several GSTINs
  • GST reports
  • Tally and Zoho Books

Products and stock

  • Short product form for stores
  • Your own product fields
  • In-store barcodes and labels
  • Product import
  • Loose goods by weight or volume
  • Stock counts and valuation

Built for every kind of business.

How to choose billing software

Six things that matter once the software is in daily use.

  • Correct GST

    The software should work out CGST, SGST and IGST for you, and give the right document for your registration type.

  • Speed at the counter

    A long queue costs sales. Look for barcode scanning, keyboard shortcuts and held bills.

  • Work without internet

    A dropped connection should not close your counter. Check what keeps working and how bills are sent later.

  • Control over staff

    Look for discount limits, manager approval and cash counts for every shift.

  • Credit and money owed

    If you sell on credit, you need ledgers, ageing and credit limits inside the same system.

  • Room to grow

    Adding a store, a warehouse or online selling should not mean moving to a new system.

Billing and POS: your questions answered.

Is this only for large chains?

No. O2M works for one shop, several stores, and dealers or distributors who bill from an office.

Can counters bill without internet?

Yes. With offline billing on, counters keep billing cash, UPI and card sales, and send the bills when the connection is back. Credit sales, returns and voids need a connection.

Does it support e-invoice and e-way bill?

Yes. Generate them through your own GST provider or through O2M's.

Do I need a thermal printer?

No. Any printer can print the 80 mm or 58 mm PDF. USB or serial thermal printers print straight from Chrome or Edge.

Which payment methods can I take?

Cash, UPI, card, or a mix at the counter. With your own gateway you can also show a UPI QR and send payment links.

Can I sell on credit?

Yes. Set a credit limit and credit days for each customer, and follow what they owe in Customers and Credit.

Does O2M send refunds?

No. O2M records the refund. You pay it from your own UPI app or card machine, then enter the reference.

Can I add more products later?

Yes. Add Warehouse Management, Purchasing, the Ecommerce Suite or O2M-AI on the same account when you need them.

Is this billing software suitable for a small business?

Yes. One shop can run on a single counter, and a setup checklist takes you from your business details to your first bill.

Can I use it on a PC?

Yes. O2M runs in Chrome or Edge on your computer, with nothing to install.

Run your stores and your sales desk on one system.

See how O2M fits the way your business works today.