GST invoice format

GST Invoice Format in India

Learn the GST invoice format used by Indian businesses, freelancers, contractors, consultants and agencies. See mandatory fields, a sample GST invoice table, CGST/SGST/IGST breakup, and PDF, Excel and Word format notes.

Create GST invoiceCalculate GST
GST invoice format PDFGST invoice format ExcelGST invoice format WordCGST SGST IGST sample
IW

Your Business

GSTIN: 29ABCDE1234F1Z5

TAX INVOICE

GST-2026-001

Bill to

Customer Name

GSTIN: 27ABCDE1234F1Z8

Invoice Date: 14 Jul 2026

Place of Supply: Karnataka

DescriptionGSTTotal
Professional service18%₹47,200

What is GST invoice format?

GST invoice format is the standard invoice structure used to show GST details on a sale of goods or services in India. A practical GST invoice includes supplier details, buyer details, GSTIN, invoice number, invoice date, item or service description, HSN or SAC code, taxable value, GST rate, CGST/SGST or IGST amount and total invoice value.

Many users search for GST invoice format, GST invoice format in Excel, GST invoice format in Word, GST invoice format PDF, GST tax invoice format and GST bill format because they want a reliable sample before creating their own invoice. This page explains the structure and links to InvoiceWala tools when you want to create the actual PDF.

GST invoice format sample

The sample below shows a simple GST invoice table for a service business. Product businesses can use the same structure with product names, HSN codes, quantity, unit and rate.

DescriptionHSN/SACQtyTaxable valueGSTTaxTotal
Website development998314140,00018%7,20047,200
Monthly support99831318,00018%1,4409,440
Setup fee99831512,00018%3602,360
Example: taxable value ₹50,000 at 18% GST gives ₹9,000 GST and ₹59,000 total invoice value. For same-state supply this may split into CGST ₹4,500 and SGST ₹4,500. For inter-state supply it may appear as IGST ₹9,000.

Mandatory fields in GST invoice format

A clean GST invoice format should make tax and payment details easy to verify. These are the fields most businesses should plan for before creating the invoice.

Supplier details

Business name, address, GSTIN, contact details and logo if available.

Buyer details

Customer name, billing address and GSTIN for B2B transactions.

Invoice number and date

A unique invoice series such as GST-2026-001 or FY26-0001, plus issue date and due date.

Place of supply

Used to decide whether CGST/SGST or IGST should appear on the invoice.

HSN or SAC

HSN for goods and SAC for services, based on the supplied item or service.

Taxable value

The value before GST after any applicable discount.

GST breakup

GST rate, CGST, SGST or IGST amount and total tax.

Final total

Subtotal, tax, round off if any and total invoice value payable.

GST invoice format in Excel, Word and PDF

Different formats solve different problems. Excel and Word are useful when you want an editable file. PDF is better when you want to send the final invoice to a customer.

GST invoice format in PDF

PDF is best when you want to send a final invoice by email, WhatsApp or client portal because the layout stays consistent.

GST invoice format in Excel

Excel is useful for editable calculations, but formulas, tax rows and print layout need careful checking before sharing.

GST invoice format in Word

Word is fine for a simple static invoice layout, but it is weaker for repeated billing, totals and GST calculations.

CGST, SGST and IGST in GST invoice format

GST invoice format should show the correct tax breakup. For same-state supplies, invoices commonly show CGST and SGST separately. For inter-state supplies, invoices commonly show IGST. The correct treatment depends on supplier location, buyer location, place of supply and the nature of the transaction.

Before sending a GST invoice, check the tax rate, place of supply, HSN/SAC code and customer GSTIN. If you only need a quick calculation, use the GST Calculator. If you are creating the final document, use the GST Invoice Generator.

Common GST invoice format mistakes

Using duplicate invoice numbers.
Missing buyer GSTIN on B2B invoices.
Using the wrong GST rate.
Forgetting HSN or SAC details.
Mixing CGST/SGST and IGST incorrectly.
Sharing Excel files when a locked PDF invoice is better.

GST invoice format FAQs

What is GST invoice format?

GST invoice format is the structure used to issue GST-ready invoices with supplier details, buyer details, GSTIN, invoice number, HSN/SAC, taxable value, GST rate, tax amount and total invoice value.

Is GST invoice format and GST bill format the same?

In common usage, both phrases often refer to the same document. Under GST, the formal document for taxable supply is generally called a tax invoice.

What fields are required in a GST invoice?

Important fields include supplier name, GSTIN, invoice number, date, buyer details, item or service description, HSN/SAC, taxable value, GST rate, CGST/SGST or IGST and total value.

Can I use GST invoice format in Excel?

Yes, but Excel requires manual formulas and formatting checks. Online invoice tools reduce calculation and PDF layout mistakes.

Can I download GST invoice format in PDF?

Yes. You can create a GST invoice in InvoiceWala and download a professional PDF after adding your real invoice details.

Can GST invoice format be made in Word?

Yes, Word can be used for a static layout, but calculations and repeat billing are easier in a structured invoice generator.

What is CGST and SGST in GST invoice?

CGST and SGST are usually used for same-state supplies, where the tax amount is split between central and state GST.

What is IGST in GST invoice?

IGST is usually used for inter-state supplies where seller and buyer are in different states.

Is invoice number mandatory in GST invoice?

Yes. A unique invoice number helps identify the bill, track payment and keep accounting records clean.

Can freelancers issue GST invoices?

GST-registered freelancers can issue GST invoices for taxable services when GST applies to their business.