Most billing software in India is either a desktop program you must install and license per computer, or a monthly subscription that costs more than a small shop's electricity bill. Apna Invoice is free billing software that runs in the browser on any phone, tablet or computer. Make GST bills, print receipts, track who owes you money and give your CA clean reports at filing time.
Everything a small business needs to bill
- Compliant GST bills. GSTIN, HSN/SAC on every line, automatic CGST + SGST for same-state sales and IGST for inter-state, amount in words, and Original/Duplicate/Triplicate copies for goods per CGST Rule 48.
- Counter sales. Bill walk-in customers and print on 80 mm thermal paper at the counter. Cash purchases from sellers who give no bill are recorded as cash memos.
- Get paid faster. A UPI QR code on every bill, one-tap WhatsApp share with a pre-written message, and payment reminders for overdue bills.
- Know your dues. Every bill tracks paid, partially paid and outstanding amounts, and the receivables aging report shows who owes you and for how long.
- Filing-ready books. GSTR-1 JSON and Excel export, GSTR-3B summary, expense tracking with input tax credit, and a full ZIP backup your accountant can open.
Sharma General Store
Shop 3, Karve Road, Pune (Maharashtra)
GSTIN: 27BXPPS6621K1ZQ
TAX INVOICE
No: INV/2026-27/011818/10/2026
Basmati rice 5 kg
1 Bag × ₹600 @ 5% GST₹630
Toor dal 1 kg
2 Pkt × ₹160 @ 5% GST₹336
Sunflower oil 1 L
2 Btl × ₹180 @ 5% GST₹378
Subtotal₹1,280
CGST₹32
SGST₹32
TOTAL₹1,344
Paid₹1,344
No installation, no licence, no per-computer fee
Because it runs in the browser, there is nothing to install and nothing to update. Open it on the shop phone, the office computer and your laptop at home, with the same account and the same books on each. You can also install it like an app from Chrome's menu so it sits on your home screen.
Built for Indian businesses
Indian number format (lakhs and crores), all GST slabs pre-loaded, financial-year invoice numbering that resets on 1 April, state-wise place of supply for correct tax splits, and UPI-first payments. It works the way Indian businesses bill, from kirana counters to consultants.
Frequently asked questions
Is this billing software really free?
Yes. Apna Invoice is free to use: unlimited bills, customers and products, with no card required. It runs in your browser, so there is nothing to install and no licence to buy.
Can I use it for a small shop without a computer?
Yes. It works on any phone in the browser and can be installed like an app from Chrome. Retail counters can print 80mm thermal receipts directly, and every bill can be shared on WhatsApp.
Does it make GST bills?
Yes. Bills are GST-compliant per CGST Rule 46: GSTIN, HSN/SAC codes, automatic CGST + SGST for same-state sales and IGST for inter-state, amount in words, and multi-copy printing for goods. If you are not GST-registered, it produces simple bills without tax fields.
How is billing software different from an invoice generator?
An invoice generator makes one document at a time. Billing software runs the workflow around it: saved customers and products, payment and dues tracking, counter bills for walk-in customers, credit notes for returns, and GSTR-1/GSTR-3B reports at filing time. Apna Invoice does both.
Can my accountant use the data at filing time?
Yes. Export GSTR-1 as JSON for the portal or Excel for the offline tool, view a GSTR-3B summary, download a receivables aging report, and take a full ZIP backup of your books, in the formats a CA expects.
Start billing today
Create your free account. No card, no trial timer. Add your business once, and your first GST bill is a minute away. Want to see the maths first? Try the free GST calculator, or read what a compliant bill must contain in our GST invoice format guide.