Isha Purohit

Expert

Published on: Jun 24, 2026

How Do You Write Gst On An Invoice?

The Goods and Services Tax (GST) is a unified tax on manufacturing, selling, and consuming goods and services in India. The

GST system requires businesses to generate invoices for the goods and services they provide, which are used to track and record transactions. A GST invoice is an important document that outlines the details of a GST transaction. This article details the process to ensure that GST is correctly included in an invoice.

What is included in a GST invoice?

The

GST invoice must include the following details:

1. GSTIN of the supplier:

This is the

GST Identification Number of the business registered under the GST system.

2. Details of goods/services:

This includes the name and quantity of goods/services provided, as well as the unit price, total amount, and applicable GST rate.

3. Place of supply:

This should be mentioned on the invoice, along with the state code of the supplying and receiving states.

4. Date of supply:

This should be the date on which the goods/services were supplied.

5. HSN/SAC code:

The HSN/SAC code is a numeric code given to goods and services for classification purposes. This code should be mentioned on the GST invoice.

6. Total amount payable:

This includes the total value of the goods/services supplied and the applicable GST.

7. Reverse charge details:

The details must be mentioned on the invoice if the transaction is subject to reverse charge.

8. Signature:

The GST invoice must be signed by the supplier and the recipient.

How to write GST on an invoice?

Here are the steps to ensure GST is correctly included on an

invoice.

1. Obtain a GSTIN:

The first step is to obtain a Goods and Services Tax Identification Number (GSTIN) from the government. This unique 15-digit number is allocated to every taxpayer who is registered under GST. This number will be required for all GST-related activities and should be included on all invoices.

2. Calculate the GST rate:

The GST rate applicable to the goods or services being invoiced must be determined. GST is divided into three categories – 5%, 12%, and 18%. The rate applicable is determined by the nature of the goods or services being invoiced.

3. Calculate the GST amount:

The GST amount must be calculated by multiplying the GST rate by the value of the goods/services being invoiced.

4. Write the GST details on the invoice:

The GST amount, GSTIN, and GST rate should be written on the invoice. This will ensure that the customer can easily identify the GST amount and claim the input credit against it.

5. File GST returns:

The business must file GST returns with the government regularly. This will ensure that the GST amount collected is correctly reported to the government and the company is compliant with GST regulations. By following these steps, businesses can ensure that GST is correctly included on their

invoices. This will help them comply with GST regulations and ensure they are not liable for penalties or fines.
Back to Learn

Frequently Asked Questions

Common questions about GST Invoice Requirements and Compliance for India.

A GST invoice is an important document that outlines the details of a Goods and Services Tax (GST) transaction. It includes information such as the GSTIN of the supplier, details of the goods/services provided, place of supply, date of supply, HSN/SAC code, total amount payable, and reverse charge details if applicable.
Including GST details on an invoice is crucial for businesses to comply with GST regulations. It allows the customer to identify the GST amount and claim input credit against it. Additionally, accurate GST invoices enable businesses to correctly report the GST amount collected to the government.
To obtain a Goods and Services Tax Identification Number (GSTIN), the first step is to register your business under the GST system. You can apply for a GSTIN through the official GST portal or by visiting the nearest GST Suvidha Kendra. Once your application is processed, you will be issued a unique 15-digit GSTIN.
The GST rate applicable to goods or services is determined by their nature. GST is divided into three categories – 5%, 12%, and 18%. You can find the appropriate GST rate for your goods or services by referring to the GST rate schedules provided by the government.
To calculate the GST amount on an invoice, you need to multiply the GST rate by the value of the goods/services being invoiced. For example, if the value of goods/services is ₹10,000 and the applicable GST rate is 18%, the GST amount would be ₹1,800 (₹10,000 x 0.18).
The HSN (Harmonized System of Nomenclature) code is a numeric code used for classifying goods, while the SAC (Service Accounting Code) code is used for classifying services. These codes are necessary on a GST invoice for proper classification of the goods or services being supplied.
Reverse charge is a mechanism under GST where the recipient of goods or services is required to pay the GST instead of the supplier. This applies in certain situations, such as when the supplier is not registered under GST or when goods or services are imported from outside India.
Yes, it is necessary to include the signature of both the supplier and the recipient on a GST invoice. This serves as a confirmation that the transaction has taken place and that both parties agree with the details mentioned on the invoice.
The frequency of filing GST returns depends on the turnover of your business. Generally, businesses with an annual turnover above ₹5 crores are required to file GST returns monthly, while those with a turnover below ₹5 crores can file returns quarterly.
Failure to include GST details correctly on an invoice can lead to penalties or fines from the government. It can also result in the customer being unable to claim input credit, which may affect your business relationships. Additionally, inaccurate GST invoices can lead to discrepancies in your GST returns, causing further complications.