Invoicing software for every sale.
Create tax invoices, quotations, challans and credit notes, and send them to customers in a few clicks.
One to ManyTax invoice
A4 GST invoice with HSN, taxes, and e-invoice details.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Tax Invoice
OF1-2627-00412
30 Oct 2026
Bill to
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Place of supply: Karnataka (29)
Payment terms: 15 days
E-way bill: 3310 2217 4056
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 | 650.00 | 5% | 6,500.00 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 | 399.00 | 5% | 7,980.00 |
| LED Bulb 9 W | 8539 | 50 | 83.90 | 18% | 4,195.00 |
Amount in words: Rupees Twenty Thousand One Hundred Fifty Four Only
E-invoice
IRN a41f7c02…9c2e
Ack 1326 1000 4412
What is invoicing software?
Invoicing software creates the documents behind a sale: quotations, tax invoices, delivery challans, and credit notes when something changes. It keeps numbering in order, works out tax, and shows what has been sent and paid.
With O2M, every document starts from the same customer and items. A quotation turns into an order or proforma, an order gets its invoice, and a return gets its credit note, so nothing is typed twice.
Open an order to see its lines, invoices and payments. From there you can download, print or send the invoice by WhatsApp, SMS or e-mail, record a payment, or make a credit or debit note. Every invoice flows into GST reports and your accounting export.
Simple from the first day.
Step 1
Quote
Send a quotation or proforma to agree the price.
Step 2
Move goods
Send a delivery challan if goods leave before the invoice.
Step 3
Invoice
Invoice at order or at dispatch, whichever suits you.
Step 4
Adjust
Issue credit or debit notes when something changes.
What Invoicing does for you.
One set of details
Quotation, proforma, challan and invoice carry the same customer and items.
Correct numbering
Invoice numbers run in a series for each outlet.
Your own fields
Print your own product fields, such as shelf or colour, on invoices.
Sent in a click
Share bills by WhatsApp, SMS or e-mail.
A correct invoice for every sale.
A4 tax invoices for business customers and deliveries, with HSN, taxes, your own fields and e-invoice details.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Tax Invoice
OF1-2627-00412
30 Oct 2026
Bill to
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Place of supply: Karnataka (29)
Payment terms: 15 days
E-way bill: 3310 2217 4056
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 | 650.00 | 5% | 6,500.00 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 | 399.00 | 5% | 7,980.00 |
| LED Bulb 9 W | 8539 | 50 | 83.90 | 18% | 4,195.00 |
Amount in words: Rupees Twenty Thousand One Hundred Fifty Four Only
E-invoice
IRN a41f7c02…9c2e
Ack 1326 1000 4412
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Quotation
QT-2627-00118
30 Oct 2026
Quotation for
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Valid until: 14 Nov 2026
Place of supply: Karnataka (29)
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 | 650.00 | 5% | 6,500.00 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 | 399.00 | 5% | 7,980.00 |
| LED Bulb 9 W | 8539 | 50 | 83.90 | 18% | 4,195.00 |
Prices include the GST shown. Goods are subject to availability.
Invoice at order or at dispatch
Choose when an order gets its invoice. Each outlet can follow the company setting or its own.
CGST, SGST or IGST
The split follows the customer's state and the state the goods leave from.
B2B and B2C
A customer with a GSTIN is billed as a registered business, and the GSTIN is printed on the invoice.
IRN and QR
The invoice PDF carries the IRN and QR code once the e-invoice is made.
Send a price, ask for an advance, or move goods first.
Quotations and proformas help you agree terms, and delivery challans let goods travel before the invoice.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Quotation
QT-2627-00118
30 Oct 2026
Quotation for
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Valid until: 14 Nov 2026
Place of supply: Karnataka (29)
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 | 650.00 | 5% | 6,500.00 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 | 399.00 | 5% | 7,980.00 |
| LED Bulb 9 W | 8539 | 50 | 83.90 | 18% | 4,195.00 |
Prices include the GST shown. Goods are subject to availability.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Delivery Challan
DC-2627-00063
30 Oct 2026
Deliver to
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Reason: Supply on approval
Vehicle: KA 01 AB 1234
| Item | HSN | Qty |
|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 |
| LED Bulb 9 W | 8539 | 50 |
Goods sent without a tax invoice. Invoice to follow.
Quotations
Offer prices valid until a date, 15 days from today unless you change it. Revise a quotation, or mark it accepted.
Convert in one step
Turn an accepted quotation into an order or a proforma, with nothing typed again.
Proforma invoices
Ask for payment or an advance before delivery. The final invoice uses the advance.
Delivery challans
Send goods on approval, for a job or between branches, bring back what returns, and invoice the rest.
Correct a sale with the right note.
When goods come back or a price changes, issue a credit or debit note against the invoice, and the customer's ledger updates.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Credit Note
CN-2627-00027
30 Oct 2026
Bill to
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Against invoice: OF1-2627-00412
Reason: Goods returned
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Cotton Round Neck T-Shirt (M) | 6109 | 5 | 399.00 | 5% | 1,995.00 |
This credit reduces the amount the customer owes.
Sample Retail Private Limited
12, MG Road, Bengaluru, Karnataka 560001
GSTIN 29ABCDE1234F1Z5
Tax Invoice
OF1-2627-00412
30 Oct 2026
Bill to
Metro Retail
48, Residency Road, Bengaluru, Karnataka 560025
GSTIN 29AAACM1234A1Z2
Place of supply: Karnataka (29)
Payment terms: 15 days
E-way bill: 3310 2217 4056
| Item | HSN | Qty | Rate | GST | Taxable |
|---|---|---|---|---|---|
| Basmati Rice 5 kg | 1006 | 10 | 650.00 | 5% | 6,500.00 |
| Cotton Round Neck T-Shirt (M) | 6109 | 20 | 399.00 | 5% | 7,980.00 |
| LED Bulb 9 W | 8539 | 50 | 83.90 | 18% | 4,195.00 |
Amount in words: Rupees Twenty Thousand One Hundred Fifty Four Only
E-invoice
IRN a41f7c02…9c2e
Ack 1326 1000 4412
Credit notes
Issue a credit note for a return or a price reduction.
Debit notes
Issue a debit note for a price difference.
Returns of office orders
Return from the order. The stock and the customer's balance both update.
Payments
Record receipts by cash, bank, UPI, cheque or TDS against the invoices they pay.
Which document do you need?
Each document starts from the same customer and items, so nothing is typed twice.
| Document | Use it for |
|---|---|
| Thermal receipt | Counter sales, on 80 mm or 58 mm rolls |
| A4 tax invoice | Business customers, deliveries, and anything you e-mail or file |
| Bill of supply | Sales by businesses under the composition scheme |
| Quotation | Offering prices, valid until a date |
| Proforma invoice | Asking for payment or an advance before delivery |
| Delivery challan | Sending goods on approval, for a job, or between branches |
| Credit note | Returns and price reductions after the invoice |
| Debit note | A price difference charged after the invoice |
Everything in one place.
Invoices
- A4 tax invoices
- Bills of supply
- Invoice at order or at dispatch
- Invoice numbers per outlet
- Your own product fields on invoices
Before the sale
- Quotations
- Proforma invoices
- Delivery challans
After the sale
- Credit and debit notes
- Returns of office orders
Sending
- Send by WhatsApp, SMS or e-mail
For businesses that send invoices.
How to choose invoicing software
What separates a good invoicing tool from a template.
GST details on the invoice
HSN, tax split and your GSTIN should appear on every invoice without manual work.
Numbering you can trust
Series for each outlet should run in order, with no duplicate numbers.
Documents that convert
A quotation should become an order and an invoice without retyping.
Sending built in
Send by WhatsApp, SMS or e-mail from the invoice itself.
Payments on the same record
You should see what has been paid and what is still due on each invoice.
A link to your books
Invoices should reach Tally or Zoho Books without being entered again.
Invoicing: your questions answered.
Can I invoice without shipping a parcel?
Yes. Invoices can be made at the order, so a sale does not need a parcel.
Do composition businesses get the right document?
Yes. O2M issues a bill of supply for composition businesses.
Can each store have its own invoice numbers?
Yes. Numbers run in a series, with a code for each outlet.
How long does a quotation last?
It is valid for 15 days from today unless you change it. After that date it shows Expired, and you can revise it to use it again.
Can I print my own fields on an invoice?
Yes. Add a field such as shelf or colour, and tick Print on invoice.
Can a customer pay an advance?
Yes. Record the advance on a proforma invoice, and the final invoice uses it.
Can I send invoices on WhatsApp?
Yes. Send them by WhatsApp, SMS or e-mail. Send starts with the customer's saved mobile or e-mail.