Am I required to use InvoiceNow — and am I eligible for a Transition Grant?

Answer a few questions below. Based on IRAS's official GST InvoiceNow Requirement phases and IMDA's InvoiceNow Grants. Takes about a minute.

1. InvoiceNow requirement check

Is your GST registration voluntary or compulsory? Voluntary Compulsory

GST registration date

Did you register for GST voluntarily within 6 months of your incorporation date? Yes No

Total annual taxable supplies (Box 4 of your GST return, for accounting periods ending in calendar year 2025) — in S$

Only needed if you don't fall under the new-registrant phases above — it determines your phase as an existing GST-registered business. If you don't have a full 12 months of GST returns ending in 2025 (e.g. you registered partway through the year), this figure needs to be annualised first — use the official IRAS calculator instead, which does this extrapolation for you.

Do either of these exclusions apply to you? I'm an overseas entity registered under GST Overseas Vendor Registration (OVR) I'm GST-registered solely because of the Reverse Charge regime

2. InvoiceNow Transition Grant check

Not tax advice. This tool gives a general indication only, based on publicly available IRAS and IMDA guidance as published. Rules, thresholds, and dates can change, IRAS will notify pre-2026 registrants of their exact mandate date by mid-2026, and individual circumstances vary — always verify your specific position with IRAS's GST InvoiceNow Requirement page, the official IRAS implementation date calculator, or your accountant before acting.