Documentation on Singapore

Find out how to verify GST Reg Number in Singapore. Use Lookuptax for hassle-free validation of GST Reg Number in Singapore.

How to verify a Singapore UEN (Unique Entity Number) using the UEN portal or ACRA Bizfile. Covers UEN format by entity type, GST vs UEN distinction, Cancelled status, and ACRA API access.

Learn about GST rules and guidelines in Singapore for businesses with our country guide — the 9% standard rate, the SGD 1 million registration threshold, reverse charge and Overseas Vendor Registration for cross-border services, invoice requirements, and the phased GST InvoiceNow (Peppol) e-invoicing mandate running from 2025 to 2031.

Learn about TIN number in Singapore. Use Lookuptax for hassle-free tax id validation in Singapore and other 100+ countries