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Performa Invoice Rules in Singapore IRAS Requirements for Performa Invoices and GST

Introduction

In Singapore, performa invoices are an essential part of the Goods and Services Tax (GST) system. The Inland Revenue Authority of Singapore (IRAS) requires businesses to issue performa invoices to their customers in specific circumstances.

This article will provide you with a comprehensive guide to understanding the performa invoice rules in Singapore IRAS requirements for performa invoices and GST.

What is a Performa Invoice?

A performa invoice is a document that shows the details of a transaction before the goods or services are delivered. It is a preliminary invoice that serves as a proof of sale and is used to calculate the GST liability.

Performa invoices are typically issued when a business is providing goods or services on a cash or credit basis, and the payment is not received immediately.

IRAS Requirements for Performa Invoices

Circumstances for Issuing Performa Invoices

According to IRAS, performa invoices must be issued in the following circumstances:

  • When a business provides goods or services on a cash or credit basis.
  • When a business provides goods or services to a customer who is not a registered person under the GST Act.
  • When a business provides goods or services to a customer who is not a Singapore resident.

Contents of a Performa Invoice

A performa invoice must contain the following details:

  • The name and address of the supplier and the customer.
  • A description of the goods or services provided.
  • The quantity and value of the goods or services provided.
  • The GST amount payable.

Format of a Performa Invoice

A performa invoice must be in a printed or electronic format and must be signed by the supplier.

Benefits of Issuing Performa Invoices

Issuing performa invoices has several benefits, including:

  • Helping to calculate the GST liability.
  • Providing a clear record of the transaction.
  • Reducing the risk of disputes over the amount payable.

Conclusion

In conclusion, performa invoices are an essential part of the GST system in Singapore. Businesses must understand the IRAS requirements for performa invoices and issue them in the correct circumstances. By doing so, businesses can ensure compliance with the GST Act and avoid any potential penalties.

FAQs

Q: What is a performa invoice?

A: A performa invoice is a document that shows the details of a transaction before the goods or services are delivered.

Q: When must a business issue a performa invoice?

A: A business must issue a performa invoice in the following circumstances: when providing goods or services on a cash or credit basis, when providing goods or services to a customer who is not a registered person under the GST Act, and when providing goods or services to a customer who is not a Singapore resident.

Q: What details must a performa invoice contain?

A: A performa invoice must contain the name and address of the supplier and the customer, a description of the goods or services provided, the quantity and value of the goods or services provided, and the GST amount payable.

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17/Aug/2026