Since the launch of InvoiceNow in 2019, led by the Infocomm Media Development Authority (IMDA), the country has taken a deliberate path: no hard mandate, no disruption. Instead, the focus has been on getting the basics right first: connecting service providers, implementing software, developing the InvoiceNow network (relying on Peppol technology) and giving businesses a reason to adopt through incentives rather than obligation.
InvoiceNow is now moving further with e-reporting requirements. In November 2025, an intermediary step required newly incorporated companies that voluntarily register for GST to submit their invoice tax data to the IRAS (Singapore Tax Authority) via InvoiceNow.
The new phase, effective since April 1, 2026, expands this requirement: all new voluntary GST registrants will now be obligated to comply with the same e-reporting mandate.
Voluntary vs compulsory GST registration
Goods and Services Tax (GST) in Singapore [↗︎] is the country’s broad-based consumption tax, comparable in function to Value-Added Tax (VAT) in Europe.
Businesses must register for GST once their annual taxable turnover exceeds, or is expected to exceed, SGD 1 million (~670 K€), at which point they become compulsory registrants. This means they are required to:
- charge GST on their taxable domestic supplies
- submit periodic GST returns to the Inland Revenue Authority of Singapore (IRAS)
- and can recover GST incurred on their business purchases as input tax
Businesses below the SGD 1 million threshold are not required to register but may choose to do so voluntarily. Some smaller companies opt in because it allows them to:
- recover GST on business expenses
- issue GST invoices that customers can use for input tax recovery
- prepare in advance for expected growth beyond the registration threshold
Next steps of the mandate
As announced on February 26, 2026 by the IRAS [↗︎], the InvoiceNow e-reporting mandate will be rolled out progressively to all GST-registered businesses in Singapore by April 2031:
- From April 1, 2028: all new compulsory GST registrants and existing GST-registered businesses with annual supplies up to SGD 200,000 (~135,000 EUR)
- From April 1, 2029: all existing GST-registered businesses with annual supplies up to SGD 1 million (~670,000 EUR)
- From April 1, 2030: all existing GST-registered businesses with annual supplies up to SGD 4 million (~2.7 million EUR)
- From April 1, 2031: all remaining GST-registered businesses with annual supplies above SGD 4 million (~2.7 million EUR)
The obligation is an e-reporting mandate rather than a full e-invoicing mandate, as in practice, invoice exchanges between companies remain unregulated and can still take place through existing channels such as paper or PDF.
However, by requiring businesses to submit invoice data to the tax authority through InvoiceNow (based on Peppol), the government is also creating the conditions for a natural next step: encouraging companies to progressively adopt structured electronic invoice exchange between trading partners as well.
Financial support measures for businesses
Unlike most e-invoicing and e-reporting mandates worldwide, Singapore is starting with smaller businesses and progressively extending the obligation to larger companies. This phased approach reflects a clear policy choice: prioritize smoother onboarding and encourage early adoption among SMEs before scaling to the full GST population.
To support this transition, Singapore is introducing temporary funding to offset implementation costs [↗︎]. Small and medium-sized enterprises (SMEs) can receive up to SGD 1,000 (~670 EUR) and access InvoiceNow-Ready solutions free of charge until March 2031. Larger businesses are also eligible for support, with grants of up to SGD 5,000 (~3,350 EUR).
