Free GST Invoice Generator — Create Tax Invoice PDF Online
Fill the form, watch the live summary, download a GST-compliant tax invoice PDF — with automatic CGST/SGST or IGST split and amount in words.
100% in your browser — files never uploaded
What Every GST-Compliant Invoice Must Include
A valid tax invoice needs seller and buyer details with GSTIN where registered, a unique consecutive invoice number, the invoice date, itemized line items with quantity and rate, the GST rate applied per item, and the tax correctly split as CGST+SGST or IGST depending on supply type. Missing any of these can block the buyer from claiming input tax credit. This generator's form maps directly to that checklist, so filling every field produces an invoice that satisfies the requirement rather than an approximation of one.
How the Amount-in-Words Line Is Generated
The grand total is converted automatically into words using the Indian numbering system — lakhs and crores rather than millions and billions — the format Indian accountants and tax officers expect to see printed on an invoice. This removes a manual step that's easy to get wrong by hand, particularly once totals cross into lakhs, where the grouping convention differs from how numbers are normally written out in English prose.
Keeping Your Invoice Number Sequence Intact
GST rules require invoice numbers to be consecutive within a financial year, and this tool increments the counter automatically on every download, storing it only in your own browser's local storage. That means the sequence stays correct across sessions without needing an account, but it also means clearing browser data resets the counter — worth noting if invoicing from more than one device for the same business.
Create a GST-Compliant Tax Invoice in Under Two Minutes
A valid tax invoice under Goods and Services Tax rules needs specific elements: seller and buyer details with GSTIN where registered, a unique consecutive invoice number, invoice date, line items with quantity and rate, the applicable GST rate per item, and the tax broken up correctly as CGST plus SGST for intra-state supply or IGST for inter-state supply. This generator handles all of it. Add your line items, pick the GST slab for each, toggle intra-state or inter-state, and the summary computes the split instantly. The grand total is written out in words automatically using the Indian numbering system — lakhs and crores, the format Indian accountants and tax officers expect on an invoice.
Automatic Invoice Numbering and Instant PDF
The invoice number increments automatically every time you download, and the counter is stored only in your own browser — so your sequence stays consecutive across sessions without any account or signup. The PDF is generated entirely on your device: your client names, amounts, and GSTIN never travel to any server. Freelancers, consultants, and small businesses can issue a professional A4 tax invoice from a phone or laptop in the time it takes to fill five fields. If you bill the same client monthly, keep this page bookmarked — your numbering continues where it left off.
CGST, SGST and IGST — Which Split Applies to Your Invoice
When the supplier and the place of supply are in the same state, GST splits equally into Central GST and State GST — an 18% rate becomes 9% CGST plus 9% SGST. When they are in different states, the entire tax is charged as Integrated GST — 18% IGST with no split. Choosing the wrong type is one of the most common invoicing errors and can block your buyer from claiming input tax credit. This tool applies the correct split from a single toggle, so the invoice you hand over is credit-safe. For quick standalone tax math without a full invoice, use our GST calculator alongside this generator.
Frequently asked questions
Is this GST invoice generator really free?
Yes. Creating and downloading tax invoice PDFs is completely free with no signup, no watermark on the invoice body, and no limit on how many invoices you generate.
Is my invoice data uploaded anywhere?
No. The form, the calculations, and the PDF generation all run inside your browser. Client names, amounts, and GSTINs never leave your device.
Does it split GST into CGST and SGST automatically?
Yes. Select intra-state supply and the tax splits equally into CGST and SGST; select inter-state and the full tax is applied as IGST — matching GST law.
How does invoice numbering work?
The number auto-increments after every download and is saved in your browser's local storage, so your sequence stays consecutive without any account.
Can I use this without a GSTIN?
Yes. GSTIN fields are optional — unregistered freelancers can set GST to 0% on each line item and issue a simple bill of supply style invoice.
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OpenData verified: 2026-07-04 · All processing happens in your browser — no files are ever uploaded.