Singapore GST Number Generator
Singapore Goods and Services Tax (GST) registration number generator by IRAS, supporting UEN and M-series formats.
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About Goods and Services Tax (GST) in Singapore
Administered by the Inland Revenue Authority of Singapore (IRAS), GST is a broad-based value-added tax on the domestic consumption of goods and services.
Businesses with taxable turnover exceeding S$1 million must register for GST and print their GST registration number on all tax invoices.
GST Number Anatomy & Structure
Singapore GST registration numbers operate under two regulatory formats:
| Position | Field | Length | Meaning & Specification | Example |
|---|---|---|---|---|
| Local Standard | Unique Entity Number (UEN) | 9 or 10 characters | For Singapore-incorporated businesses, the GST registration number matches their ACRA-issued UEN | 202412345B |
| M-Series | Special / OVR Registration | 9 or 10 characters | Begins with letter M, assigned by IRAS for the Overseas Vendor Registration (OVR) regime | M98765432X |
Validation & Registration Rules (IRAS / ACRA)
Official rules established by the Inland Revenue Authority of Singapore:
Standard UEN: Weighted Modulo 11; M-Series: ^M[0-9A-Z]{8,9}$ issued directly by IRAS.
- 1. Determine whether the identifier represents a local business UEN or an IRAS M-series record.
- 2. For local businesses, validate the 10-char modern or 9-char legacy UEN checksum.
- 3. For foreign digital providers under OVR, verify the M prefix followed by 8 to 9 alphanumeric characters.
- 4. Confirm compliance with GST invoice reporting rules.
Frequently Asked Questions (FAQ)
Why do local businesses use their UEN as their GST number?
Singapore harmonized corporate identification so that a business UEN doubles as its GST registration number.
What is the IRAS M-Series?
M-series numbers are allocated to foreign non-resident businesses registered under the Overseas Vendor Registration (OVR) regime.