Companies that are applying for new voluntary GST registration in Singapore are supposed to comply with GST InvoiceNow requirements. Companies affected by the requirements are required to have a Peppol ID and submit the relevant invoice to IRAS through the InvoiceNow network from the GST registration date.

Did IRAS Introduce the InvoiceNow Requirement, and Why?

Yes, IRAS introduced the InvoiceNow requirement because it is designed to make the reporting of GST more effective by enabling invoice data to be shifted in electronic form from the accounting system to the IRAS portal.

Who Is Affected From 1 April 2026?

The GST e-invoicing deadline for April 2026 applies particularly to new voluntary GST registration companies. If a company submits the application for voluntary GST registration on or before 1^st April 2026, it should comply with the requirement of GST InvoiceNow.

For instance, if a company is registered in 2019 and specifically applies for GST registration in April 2026, it will still be covered by the requirement.

What Should Be Done By New Registrants?

Companies affected by these requirements are supposed to prepare for InvoiceNow as part of the GST registration. The companies need to:

• Opt for an InvoiceNow-ready invoicing or accounting solution

• Get a Peppol ID

• Associate with its system through InvoiceNow Access Point

• Register the UEN in Peppol Directory

• Enable the functionality of GST InvoiceNow submission

Ensure the GST and invoice information is recorded precisely.

For example, if a newly developed business applies for voluntary GST Registration in May 2026, it ought to select an InvoiceNow-ready solution first, then get the Peppol ID, and prepare the process of invoicing. After the GST registration is ready, the company has to transmit the invoice data to the IRAS.

What are the Important GST and InvoiceNow deadlines?

The key date is 1^st April 2026 for the new registrants of 2026 for InvoiceNow. All companies in Singapore that are applying for voluntary GST registration must comply with the requirements of InvoiceNow, regardless of the registration date.

• On 1^st of April 2026, the new voluntary registrants were made.

• On 1^st April 2028, new mandatory GST registrants and current GST registrants with annual supplies of 200,000 SGD or less.

• On 1^st of April 2029, existing businesses with total annual supplies of 1 million SGD or less.

• On 1^st of April 2030, existing businesses with total annual supplies of 4 million SGD or less.

• On 1^st of April 2031, existing businesses with total annual supplies of more than 4 million SGD.

Practical Example:

Let us consider a company that applied for voluntary GST registration on 16^th of August 2026. As the submission was made after 1^st of April 2026, the company must comply with the requirement of GST InvoiceNow.

The business ought to set up an InvoiceNow-ready invoicing system, get a Peppol ID, and configure the right GST codes before the GST registration is ready. Once it is ready, the relevant invoice data is transmitted to the IRAS portal through the InvoiceNow network.

This example illustrates that it enables the company to develop its GST process precisely from the start instead of changing its system in the future.

Conclusion

In the end, it can be concluded that the new GST registration InvoiceNow requirement has shifted the process of preparation for companies who voluntary register for GST in Singapore. All new GST registrants in Singapore are supposed to comply with InvoiceNow from 1^st April 2026, regardless of when they were registered. For this, companies are supposed to arrange their InvoiceNow-ready invoicing and accounting systems, get their Peppol ID, and submit the GST processes before it is ready.

Call to Inquire

We, at FAST ACCOUNTING, are here to assist businesses in Singapore with GST registration, GST filing, implementation of InvoiceNow, and bookkeeping. If your company is planning voluntary GST registration in Singapore and needs to understand your InvoiceNow rules, we have experienced professionals who can assist in preparing your GST processes and accounting system before GST is ready.