What is the Roles & Responsibility of a GST Registered Business

Charge 9% GST on standard-rated supplies from the effective date of registration. Different rules apply to zero-rated, exempt and out-of-scope supplies. BTA can help review the treatment using your records.

File returns, including nil returns, for your assigned accounting periods. Filing and payment are generally due one month after each period ends. BTA supports preparation and submission within the agreed scope, based on records supplied on time.

Retain business records and supporting documents for at least five years, including after GST deregistration. BTA helps organise bookkeeping records within the agreed scope; clients should retain their source documents.

Public prices must generally include GST. If both inclusive and exclusive prices are shown, the inclusive price must be at least as prominent. BTA can advise on the applicable display rules.

Include the GST registration number on tax invoices and relevant receipts. Issue the required documents for your supplies. BTA can help review your invoice template.

Notify IRAS of changes to relevant business particulars. Updating ACRA records does not by itself confirm every IRAS update. BTA can assist with agreed notifications.

On deregistration, assess GST on business assets and submit the final GST F8 as required. BTA can help review the final return and asset treatment.

Voluntary registrants generally use GIRO, remain registered for at least two years and meet IRAS conditions. The GST InvoiceNow Requirement applies to businesses applying voluntarily on or after 1 April 2026, subject to exclusions. BTA can review the requirements and a suitable workflow.

IRAS: responsibilities of GST-registered businesses