How to Choose an ERP or Accounting Software for GST InvoiceNow

By ZenMatrix · 31 October 2026

Every GST-registered business in Singapore will need software that can submit invoice data to IRAS over the InvoiceNow network. Use these questions with any vendor — including us. For the full timeline, see our GST InvoiceNow guide.

1. Compliance

  • Is the software on IMDA's list of accredited InvoiceNow-Ready Solutions? IRAS requires GST-registered businesses to submit invoice data using these solutions. If it is not accredited yet, ask when it is expected.
  • Will the vendor (or its Access Point provider) register your business in the SG Peppol Directory with your UEN?
  • Can it both send and receive Peppol e-invoices, not only submit data to IRAS?
  • Do invoices follow the PINT-SG format?
  • Do you also trade in Malaysia? If so, does it support LHDN's MyInvois e-Invoice as well?

2. Timing

  • When is your own GST InvoiceNow implementation date? It ranges from 1 Nov 2025 to 1 Apr 2031 depending on your registration and annual supplies.
  • How long does onboarding take, and can you go live before your deadline? IRAS encourages businesses to onboard early.

3. Fit for your business

  • Which modules do you actually need — accounting only, or also inventory, sales, purchasing, HR and payroll?
  • Can your existing data (customers, suppliers, items, opening balances) be migrated, and who does it?
  • How do staff enter transactions day to day? Some systems, including ZenERP, let staff work from chat apps like WhatsApp instead of desktop screens.

4. Cost and support

  • What is the full cost: subscription, per-user fees, Peppol / Access Point transaction fees, setup and migration?
  • Are there Free-of-Charge solution packages you qualify for? IRAS publishes a list for GST-registered businesses.
  • Who supports you locally if invoice submission fails close to a filing deadline?

Where ZenERP stands

ZenERP is built around Peppol and PINT-SG, supports Malaysia MyInvois, and lets staff work from WhatsApp and Telegram. Its IMDA InvoiceNow-Ready accreditation is in progress — ask us for the current status.