Do I need to sign up?

You can fill the form and preview your invoice without signing up. A one-tap Google or WhatsApp OTP sign-in is only required when you download the PDF.

How does GSTIN auto-fill work?

Enter any valid 15-digit GSTIN and click Verify. We fetch the legal name, trade name, registered address, and state directly from the GSTN database and populate the form automatically.

Is the invoice legally valid under GST law?

Yes. Every invoice includes all fields required by Rule 46 of the CGST Rules: supplier GSTIN, recipient GSTIN (for B2B), invoice number, date, HSN codes, taxable value, CGST/SGST or IGST breakup, and place of supply.

Do you support intra-state and inter-state GST?

Yes. When seller state equals buyer state, we auto-compute CGST + SGST. When states differ, we switch to IGST at the combined rate.

Can I add my digital signature and UPI QR?

Draw your signature with mouse/finger or upload a PNG. Paste your UPI ID and we auto-generate a dynamic UPI QR with the invoice amount encoded.

Is my data stored anywhere?

The PDF is rendered entirely in your browser. Nothing leaves your device until you sign in. When signed in, we only store invoice metadata to enforce your monthly quota; we never read item descriptions or buyer details.

FREE GST Bill Generator

Create a legally-valid GST invoice in under 60 seconds. Auto-fill from GSTIN, HSN code search, UPI QR, digital signature — all in your browser.

✓ No signup for preview ✓ GSTIN auto-fill ✓ CGST/SGST & IGST auto-detect ✓ PDF in one tap

Invoice Details

3 free left this month

1Your business (Seller)once — saved on this device

Your GSTIN (optional — skip if unregistered)

Business name (as on GSTIN)

Address

State (place of supply)

Phone / Email (optional)

2Customer (Buyer)

Buyer GSTIN (required for B2B)

Customer name

Customer address (optional for B2C)

Customer state

Phone (for WhatsApp send)

3Invoice number & date

Invoice number

Invoice date

4Items / servicesHSN search built-in

5Payment detailsoptional

UPI ID

Bank account & IFSC (optional)

6Signaturedraw or skip

Upload PNG Mouse, finger, or stylus

7Notes & termsoptional

Live Preview

updates as you type

Created with GSTBill.app

Your Business Name

Address line 1
Address line 2

GSTIN: —

Tax Invoice

INV-0001

Date: —

Bill To

Customer name
Address

Place of Supply

—

#	Description	HSN	Qty	Rate	GST	Amount

Subtotal₹0.00
CGST₹0.00
SGST₹0.00
IGST₹0.00
Total₹0.00

Your GST bill, free forever — gstbill.app

How it works — 4 steps, 60 seconds

No install. No learning curve. Made for shopkeepers and small traders who bill from a phone.

Enter your GSTIN

We pull business name, address & state from the GSTN database. No typing.

Add buyer & items

Search HSN codes as you type. GST rate auto-sets. B2B or B2C.

Preview instantly

See the exact PDF before you sign in. CGST+SGST or IGST auto-detected.

Download / WhatsApp

One-tap sign in, PDF lands in your device or customer's chat.

Everything a GST-compliant invoice needs

Built to Rule 46 of the CGST Rules. Audited by practising CAs. Works for every industry.

🔍

GSTIN auto-fill

Enter 15-digit GSTIN → legal name, trade name, address, state filled in one click via the GSTN API.

📄

HSN / SAC code search

Type "soap" or "consultancy" — we match HSN/SAC codes with the correct GST rate applied automatically.

⚖

CGST/SGST & IGST auto-split

We compare seller & buyer states. Same state → CGST+SGST. Different → IGST. Zero math.

💵

UPI QR on the invoice

Paste your UPI ID. We generate a dynamic QR with the exact bill amount. Customer pays by scan.

✍

Digital signature

Draw with mouse/finger/stylus or upload a PNG. Signature is embedded in the PDF — no scanner needed.

📱

WhatsApp-native delivery

Tap "Send on WhatsApp" and we ship the PDF straight to the customer — no email loop.

Why shopkeepers choose us over Tally, Vyapar & Excel

Honest comparison across the tools most small Indian businesses actually use.

Feature	GSTBill.app	Tally Prime	Vyapar	Excel template
Setup time	< 60 sec	2–3 hrs	15 min	Varies
Works on phone	Yes — WhatsApp & web	Desktop only	Yes	Awkward
Cost to start	Free (3/mo)	₹18,000+ /yr	₹99/mo+	Free
GSTIN auto-fill	Yes	Manual	Yes	Manual
HSN search	Yes — keyword	Yes	Yes	No
UPI QR auto-generated	Yes	No	Paste image	No
CGST / SGST / IGST auto-detect	Yes	Yes	Yes	Manual
Send invoice on WhatsApp	Native bot	Export+send	Share PDF	Manual
Accountant / CA can download data	Monthly ZIP	Yes	Yes	Hand-collate

What makes a GST invoice legal?

Every bill this tool generates ticks every field listed in Rule 46 of the CGST Rules, 2017.

Legally-valid GST invoice must have: (i) supplier's name, address, GSTIN; (ii) consecutive invoice number & date; (iii) buyer's name, address, GSTIN if registered; (iv) HSN / SAC of goods or services; (v) description, quantity, unit, total value; (vi) taxable value after discounts; (vii) CGST, SGST or IGST rate & amount; (viii) place of supply with state code for inter-state; (ix) reverse charge marker if applicable; (x) signature of supplier or authorised representative.

Missing even one of these fields can invalidate your input-tax-credit claim. Our generator fills all ten automatically from the data you enter. Read the full Rule 46 guide →

Frequently asked questions

If we’ve missed one, ping us on WhatsApp — reply in under 5 minutes during business hours.

Is this GST bill generator really free?

Yes. You get 3 free GST bills every calendar month with a small “Created with GSTBill.app” watermark and footer credit. Paid packs (from ₹99) remove the watermark and unlock 20–600 invoices.

Do I have to create an account?

No — you can fill the form and preview the invoice without signing in. Sign-in (Google or phone OTP, one tap) is only required when you click Download or Send. This keeps bots out and protects your quota.

How does the GSTIN auto-fill actually work?

When you click Verify, we call the official GSTN-authorised API. If the GSTIN is active, we receive legal name, trade name, principal place of business, state code, and registration date — which we populate into the form fields. Invalid/cancelled GSTINs are flagged.

Does the PDF meet Rule 46 of the CGST Rules?

Yes. Every field required by Rule 46 — supplier GSTIN, buyer GSTIN (for B2B), consecutive invoice number, date, HSN/SAC, taxable value, tax split, place of supply — is present. CAs can audit any sample bill.

Can my customer pay me directly from the PDF?

Yes. Enter your UPI ID and we embed a dynamic UPI QR code with the bill amount pre-filled. Customer scans with any UPI app (GPay, PhonePe, Paytm) and pays the exact amount — zero typing errors.

Is my customer data safe?

The PDF renders entirely in your browser. We only store invoice metadata (number, date, total amount) to enforce your monthly quota — never item descriptions, never buyer details. You can export or delete your data anytime.

Can I use this in Marathi / Hindi / Tamil / Gujarati?

The interface is in English but you can type any Indian language into the description, notes, and buyer details fields. Regional templates (e.g. Marathi, Gujarati, Tamil) are also available.

Start creating GST bills in 60 seconds

Free forever for 3 invoices/month. No credit card. No signup for preview.

↑ Create a GST Bill Now