Free tool · Finance
Invoice Generator
Free invoice generator for Indian small businesses. Add line items, GST, and download a clean PDF.
Seller (You)
Bill To (Client)
Line items
Frequently asked questions
Is this a valid GST invoice?+
It includes seller/buyer GSTIN, invoice number, date, HSN-optional line items, GST rate and total — the standard fields required for a GST tax invoice. Add HSN codes to line descriptions if your products need them.
Is my data saved anywhere?+
No. Everything happens in your browser. Nothing is uploaded or stored. Refresh and it's gone.
Can I use this for freelance invoicing?+
Yes. Set GST to 0 if you're not registered, or set 18% for consulting services if you are. The PDF is clean and client-ready.
What if I need recurring invoices, reminders and payment tracking?+
Use AIFlowBiz. You get customer profiles, unlimited invoices, Razorpay collect-links, WhatsApp share, and payment tracking without re-entering details every time.
AIFlowBiz
Do more than just calculate.
AIFlowBiz is a complete business platform for Indian SMBs — GST invoices, inventory, appointments, ecommerce orders, and an AI assistant that talks to your data. Start free, no card required.
Related tools
Who should use Invoice Generator
- Freelancers and consultants billing a handful of clients each month
- New businesses that have not yet set up accounting software
- Sellers who need a proforma or replacement copy quickly
How to use it, step by step
- Fill in your business details, GSTIN if registered, and address.
- Add the customer's name, address and GSTIN where applicable.
- Set the invoice number and date — keep numbers sequential and unique across the financial year.
- Add line items with quantity, rate and tax rate; the totals update as you type.
- Download the PDF and keep a copy with your records.
What a compliant tax invoice needs
A GST tax invoice generally has to show supplier name, address and GSTIN, a consecutive invoice number and date, recipient details, HSN or SAC code, description, quantity, taxable value, rate and amount of tax, place of supply, and whether tax is payable on reverse charge.
Worked example: a two-line services invoice
- Line 1: Design retainer, 1 x Rs 30,000 = Rs 30,000
- Line 2: Additional artwork, 4 x Rs 2,500 = Rs 10,000
- Taxable value: Rs 40,000
- IGST at 18%: Rs 7,200
- Invoice total: Rs 47,200
Keeping the taxable value and tax as separate lines makes reconciliation with your GST return straightforward and avoids the rounding disputes that inclusive-only invoices create.
Common mistakes to avoid
- Reusing or skipping invoice numbers, which breaks the required consecutive series.
- Leaving out the place of supply, which determines whether IGST or CGST plus SGST applies.
- Omitting HSN or SAC codes where your turnover requires them.
- Editing an issued invoice instead of raising a credit note.
How to read the result
Treat the generated PDF as the record copy: store it, and mirror the same numbers in your books the same week. Chasing invoices at year end is where most small-business tax stress comes from.
Frequently asked questions
Is the invoice legally valid?
The format includes the fields a tax invoice normally requires, but validity depends on your registration status and the accuracy of what you enter. Have your accountant review your first few invoices.
Where is my data stored?
In your browser only, for as long as the page is open. We do not receive or retain your invoice contents.
Disclaimer: Invoice requirements vary with registration status, turnover and supply type. This tool helps you produce a document; it does not confirm compliance. Confirm your format with a qualified professional.