Free GST Invoice Generator – Create GST Invoices Online

GST Invoice Generator

Fill in seller, buyer, and item details

Draft saved

Your Business Details

Invoice Template

Currency

Business Name

GSTIN

PAN Number

Contact / Email

Address

Company Logo

🖼

Drop or click
PNG / JPG

Signature / Stamp

✏

Drop or click
PNG transparent

Buyer Details

Buyer Name

Buyer GSTIN (optional)

Mobile Number

Email (optional)

Billing Address

Shipping Address (if different)

Invoice Details

Invoice No.

Invoice Date

Due Date

PO Reference (optional)

E-Way Bill No. (optional)

GST Type

Reverse Charge

Place of Supply

Line Items

Payment & Notes

Payment Terms

UPI ID (optional)

UPI QR — will appear on invoice

Bank Name & Account (optional)

Vehicle No. (optional)

Notes / Remarks

Terms & Conditions

GST Invoice Preview

Business Impact

Digitised invoicing improves collections, reduces errors, and strengthens financial control. Every GST invoice must include mandatory fields.

Recommended Actions

Verify GSTIN of buyer before issuing B2B invoice

Include correct HSN codes on every line item

Double-check tax calculations before finalising

Maintain a backup copy of every invoice generated

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Formula & How It Works

Taxable Value = Qty × Rate
CGST = Taxable Value × (GST Rate ÷ 2) ÷ 100
SGST = Taxable Value × (GST Rate ÷ 2) ÷ 100
Invoice Total = Taxable Value + CGST + SGST

Worked Example

Seller: ABC Traders | Buyer: XYZ Pvt Ltd | Product: Office Chair × 5 @ ₹8,000 | GST 18%

Taxable = ₹40,000 | CGST ₹3,600 | SGST ₹3,600 | Total = ₹47,200

When to Use This Calculator

Create quick invoices for one-off sales
Generate sample invoice format for new business
Create pro-forma invoice for customer approval
Print backup invoice when billing software is down
Use as reference for setting up ERP billing

Frequently Asked Questions

What fields are mandatory on a GST invoice? +

Supplier name, GSTIN, address; Recipient name, GSTIN (for B2B); Invoice number, date; HSN/SAC code; Taxable value; GST rate and amount (CGST+SGST or IGST); Total value.

When should I issue a GST invoice? +

For goods: on or before date of removal. For services: within 30 days of supply. For banking/insurance: within 45 days.

What is the difference between tax invoice and bill of supply? +

Tax invoice is for taxable supplies (you charge GST). Bill of supply is for exempt/nil-rated supplies or composition dealers (no GST charged).

Can I send a digital/PDF invoice? +

Yes. Digital invoices are valid under GST as long as they contain all mandatory fields and are issued in a tamper-proof format.