GST Filing in Singapore
Goods and Services Tax (GST) is a tax applied to most goods and services in Singapore. If your business sells taxable goods or services, you must follow GST rules to avoid penalties and ensure smooth operations.
GST filing in Singapore is vital for businesses to stay on track with the Inland Revenue Authority of Singapore (IRAS). Failing to file correctly can lead to fines.
GST registration and filing periods
Compulsory registration generally applies when taxable turnover exceeded S$1 million in the previous calendar year, or is reasonably expected to exceed S$1 million in the next 12 months. See the FAQs below for timelines.
File and pay for your assigned accounting period, generally within one month after it ends. Periods may be quarterly or monthly; they do not always follow calendar quarters. Check myTax Portal for your actual due date.
A late F5/F8 submission generally attracts S$200 immediately and S$200 for each completed month outstanding, up to S$10,000 per return. Late payment and incorrect returns can attract separate consequences. IRAS filing guidance
Who needs to file GST?
GST-registered businesses must file for each assigned accounting period, including a nil return when there are no transactions. Do not assume your GST period is a full calendar year.
Applying for GST registration
Apply through IRAS with the supporting information required for your circumstances. Processing time depends on a complete application and any follow-up review; it is not guaranteed. Consider InvoiceNow requirements and voluntary registration conditions before applying.
GST return forms
- GST F5: periodic return, including nil returns.
- GST F7: correction of previously filed returns. Correct errors promptly and generally within five years from the end of the relevant accounting period. An administrative concession may permit adjustment in a later F5 when its conditions are met.
- GST F8: final return following deregistration, including any required GST on remaining business assets.
GST filing process
- Arrange the appropriate Corppass authorisation for the staff member or tax agent filing the return.
- Prepare and review complete sales, purchase, tax and supporting records.
- Sign in to myTax Portal using the approved Singpass or foreign-user sign-in method. Do not share passwords or authentication codes.
- Select the correct return and accounting period, review the figures and submit through an authorised approver.
- Retain the acknowledgement and arrange payment by the applicable due date.
Common GST filing mistakes
Check the GST treatment of each supply, the eligibility and supporting evidence for input tax claims, the assigned period and the filing deadline. A business purchase does not automatically qualify for an input tax deduction. Reconcile records and investigate differences before filing.
How BTA supports GST filing
BTA can help assess registration, review business records and prepare GST returns within the agreed scope. Timely, complete records and client approvals remain essential. Software supports the workflow; it does not guarantee compliance.
What We Do?
- GST Application (Mandatory / Voluntary)
- Application for GST Exemption
- GST Deregistration
- GST calculator and ASK annual review
- Quarterly GST Deadline email reminder
- Preparation of GST Tax Report and F5 return
- General GST Schemes
Contact Business Tax Accountancy now for a consultation. Let us handle your GST filing in Singapore and keep your business on track.
Frequently Asked Questions:
Compulsory registration generally applies when taxable turnover exceeded S$1 million in the previous calendar year, or is reasonably expected to exceed S$1 million in the next 12 months. Under the retrospective test, apply between 1 and 30 January of the following year; registration generally starts on 1 March. Under the prospective test, apply within 30 days of the forecast. For prospective liability arising on or after 1 July 2025, registration starts two months from the forecast date. Exceptions and evidence requirements can affect your position. IRAS registration guidance
It may apply if it meets IRAS's conditions. Voluntary registrants must generally remain registered for at least two years, so assess both the costs and benefits before applying. Businesses applying for voluntary registration on or after 1 April 2026 must meet the GST InvoiceNow Requirement, regardless of incorporation date or business structure. Voluntary registration
Your GST return and payment are generally due one month after the end of the assigned accounting period. Check your business's actual period and due date in myTax Portal; not every business follows calendar quarters. IRAS filing deadlines
IRAS may backdate registration and require GST to be accounted for from the effective date, even if it was not collected from customers. Penalties may also apply. Review the facts promptly rather than waiting for the next annual filing. IRAS registration guidance
BTA can help review your registration position and prepare GST filings using your business records. Contact +65 6539 9248 to discuss your circumstances and agree the service scope.
