Welcome to our GST Invoice Generator for India. This tool helps you create a GST compliant tax invoice or GST proforma invoice with GSTIN validation, HSN/SAC code support, automatic CGST SGST IGST calculation, and a print-ready A4 GST invoice format.

Step 1

🛠 Enter Seller & Buyer Details (GSTIN, Address, Place of Supply)

Fill Seller Name, Seller GSTIN, State, and Seller Address.
Enter Buyer Name, Buyer GSTIN, Buyer State, and Buyer Address.
Provide Invoice Number and select Invoice Date.
Select Place of Supply to ensure correct CGST/SGST or IGST calculation.

Tip: Correct GSTIN + state selection helps generate accurate intra-state vs inter-state GST totals.

Step 2

📦 Add Item / Service Details (HSN/SAC, Quantity, Rate, GST%)

Enter Item/Service Description clearly (helps customers + record-keeping).
Fill HSN (goods) or SAC (services) — typically 4 to 8 digits.
Enter Quantity, Rate / Unit Price, and applicable GST rate (%).
Review taxable value and tax breakup for a clean GST invoice format.

Why this matters: Correct HSN/SAC + GST% ensures accurate HSN/SAC-wise tax calculation.

Step 3

➕ Add More Items (Multiple Line Items)

Click “+ Add Item” to add more rows for additional products/services. This is useful for multiple items GST invoices and bulk billing.

Step 4

📊 Calculate GST (CGST SGST IGST Auto Calculation)

Press “Calculate” to auto-compute:

CGST & SGST for intra-state transactions
IGST for inter-state transactions
Subtotal, tax totals, and Grand Total

Result: A correct GST bill with a clean tax breakup (ready for printing/sharing).

Step 5

🖨️ Print GST Invoice (A4 Print-Ready Invoice Format)

After entering all details, click “Print Invoice”. Your invoice will be generated in a professional A4 GST invoice print format, suitable for customer sharing and records.

Tip: Print preview should show totals aligned and not overflowing the page.

⚠️ Important Notes (Validation Rules)

Negative values are not allowed for GST%, Quantity, Rate, or Charges.
HSN/SAC should be 4–8 digits (as applicable).
Mandatory fields like Seller/Buyer Name, GSTIN, Invoice No, Date, and Place of Supply must be filled.
Use correct Supply Type to avoid wrong CGST SGST IGST totals.

🎉 Done! You can now generate a GST compliant invoice online with accurate tax calculation & print-ready format.

📖 Frequently Asked Questions (FAQ)

📌 What is a GST invoice?

A GST invoice is a legal document issued by a seller to a buyer showing sale details, GST rate, and GST amount charged. It serves as proof of taxable supply under GST law.

📌 What is a Proforma invoice?

A proforma invoice is a preliminary bill issued before the final sale. It’s not a tax invoice, but an estimated cost used for quotations or customs.

📌 How can I generate a GST invoice?

Enter seller & buyer details (name, GSTIN, address).
Add invoice number & date.
Add items (HSN/SAC, qty, rate, GST%).
Calculate CGST/SGST or IGST.
Generate and print / save as PDF.

📌 What does GST mean?

GST means Goods and Services Tax — a single tax on supply across India that replaced multiple indirect taxes like VAT, Service Tax, and Excise Duty.

📌 Who can issue a GST invoice?

GST-registered businesses must issue GST invoices for taxable sales (traders, manufacturers, service providers). Thresholds generally apply (often ₹20L / ₹10L for special category states).

📌 How to calculate GST?

GST Amount = (Original Price × GST Rate) / 100

Example: ₹1,000 at 18% GST → GST = ₹180

Use our GST Calculator to split CGST/SGST/IGST quickly.

📌 What is the minimum amount for a GST invoice?

There is no minimum amount. For sales below ₹200, a consolidated invoice can be issued instead of separate invoices.

📌 How many types of GST are there?

CGST – Central GST (centre)
SGST – State GST (state)
IGST – Integrated GST (inter-state)

📌 Can I create my own invoice?

Yes, but it must include key fields like:

Seller & buyer GSTIN
Invoice number & date
HSN/SAC + tax rates
CGST/SGST/IGST amount
Total invoice value

📌 How to claim a GST refund?

Exports (zero-rated supply)
Excess tax paid due to error
Refund order from GST authorities

To claim: GST portal → Form RFD-01 + supporting documents.

📌 Who pays GST?

GST is borne by the end consumer. Businesses collect it and deposit to the government. Under RCM, some GST is paid directly by the recipient.

📌 When should a GST invoice be raised?

At the time of supply. For goods: delivery/transfer. For services: completion (as per GST time-of-supply rules). Prompt invoicing improves compliance.

📌 What is a GST invoice number?

A unique consecutive serial number (max 16 characters). It can include alphabets, digits, and separators like dash or slash and must be unique for the financial year.

📌 What are the benefits of a GST invoice?

It provides legal proof of supply, helps buyer claim input tax credit (if eligible), and supports transparent, compliant business records.

📌 What are the benefits of a GST invoice on Amazon?

GST invoices for business purchases can help claim eligible input tax credit, potentially reducing effective procurement cost.

📌 How does a GST invoice work?

It lists goods/services, quantity, taxable value, GST rate (CGST/SGST/IGST), and total payable—helping both seller and buyer track transactions for GST compliance.

📌 How does a GST invoice discount work?

Discounts before/at sale reduce taxable value. Post-sale discounts must be linked to the invoice and agreed by both parties, as per GST rules.

📌 Can a GST invoice be changed?

Once issued, it shouldn’t be altered. Corrections are typically done via a credit note or debit note, as applicable.