Singapore GST Registration and F5 Return Filing
Singapore businesses must register for GST when taxable turnover exceeds S$1 million. The standard rate is 9%, GST returns (Form F5) are generally filed quarterly, and are due within one month after the period ends.
Implemented by ERPHUBs · SingaporeGST administered by IRAS
Registered businesses charge GST on taxable supplies, claim input tax on business expenses and file Form F5 online through myTax Portal. Exports of goods and international services are zero-rated.
We code each transaction in Zoho Books, review reverse charge and import GST, and prepare a reconciled F5 working before you file.
Key rules at a glance
- Threshold: Mandatory when taxable turnover exceeds S$1 million in a calendar year or is expected to in the next 12 months.
- Rate: 9% standard; 0% for exports and international services.
- Return: Form F5, usually quarterly, due one month after period end.
- Overseas vendors: Overseas digital service providers may need to register under the overseas vendor registration regime.
- Reverse charge: Applies to certain imported services for some GST-registered businesses.
- E-invoicing: InvoiceNow is being phased in for GST-registered businesses; check your timing.
GST Filing (F5): scope of service
Tax code review
SR, ZR, ES, OS, TX and other codes verified.
F5 workings
Boxes 1 to 8 reconciled to the ledger.
Imports
Import GST and deferment records.
Reverse charge
Self-accounting for imported services.
InvoiceNow
Peppol-ready invoices and access point set-up.
Audit support
Documents for IRAS queries.
Singapore compliance calendar
Dates shown are the general statutory dates; they move with your year-end, entity type and any extension.
31 January
Quarter ending 31 December.
30 April
Quarter ending 31 March.
31 July
Quarter ending 30 June.
31 October
Quarter ending 30 September.
Set-up in Zoho Books
- Enter the GST registration number and filing frequency.
- Assign GST codes per item and supplier.
- Track foreign-currency conversions for the return.
- Run the F5 report and reconcile to the ledger.
- File via myTax Portal and store the acknowledgement.
What we watch for
- Claiming input tax without a valid tax invoice.
- Missing late-payment penalties.
- Wrong zero-rating evidence on exports.
- Overlooking InvoiceNow timelines.
GST Filing (F5): common questions
9% from 1 January 2024.
No, but you may register voluntarily if you meet IRAS requirements.
Usually quarterly. Some businesses are approved for monthly filing.
Zoho Books prepares the numbers; you file through myTax Portal or an agent.
General guidance for Singapore, last reviewed 2026-10-16; it is not tax advice. Rates, thresholds and dates change, so confirm with a qualified local adviser. Official sources: Inland Revenue Authority of Singapore
A practical guide for Singapore businesses
GST registration and the 9 percent rate
Singapore GST rose to 9 percent on 1 January 2024. A business must register if its taxable turnover exceeds S$1 million in the past four quarters or is expected to in the next 12 months, and may register voluntarily below that. Overseas suppliers of digital services and low-value goods to Singapore consumers may need to register under the Overseas Vendor Registration regime.
Exports and international services can be zero-rated, while sales of residential property and most financial services are exempt. Zero-rated supplies allow input tax recovery, so correct classification is both a compliance and a cash-flow matter.
Returns, payment and InvoiceNow
GST returns, Form GST F5, are normally filed quarterly and are due, together with payment, one month after the end of the accounting period. The return reports standard-rated, zero-rated and exempt supplies, taxable purchases, output tax, input tax and any import GST claimed. Filing is through myTax Portal.
Singapore is moving businesses towards e-invoicing through InvoiceNow, which is based on the Peppol network. New GST registrants have been brought into a phased requirement, and many businesses adopt it early for faster payment and fewer errors. We help connect Zoho Books to an access point provider where InvoiceNow is relevant.
- Reverse charge on imported services where the business cannot fully recover input tax
- Import GST is claimed using customs permit information
- Bad debt relief requires six months and other conditions
- Keep records for five years
Input tax claims and common errors
You can claim input tax on purchases used to make taxable supplies if you hold a valid tax invoice and the purchase is not on the blocked list, which includes club subscriptions, motor cars and medical expenses for employees, subject to exceptions. Partial exemption rules apply where a business makes both taxable and exempt supplies.
Typical errors include claiming input tax without a valid tax invoice, applying the wrong rate in the period around a change, and mis-classifying services supplied overseas. We run exception reports on each return before filing.
Singapore GST treatment
| Supply | Treatment | Input tax claim |
|---|---|---|
| Local sale of goods | Standard rate 9 percent | Yes |
| Export of goods | Zero-rated | Yes |
| Qualifying international services | Zero-rated | Yes |
| Sale or rental of residential property | Exempt | No |
More questions about this topic in Singapore
S$1 million of taxable turnover in the past four quarters, or expected in the next 12 months.
Yes, if you make or intend to make taxable supplies. It lets you claim input tax but also creates ongoing obligations.
Within one month after the end of the accounting period, for both filing and payment.
Requirements are being phased in, and businesses may adopt voluntarily. We check the current rules for your registration date.
This guide is general information based on published Singapore rules and is not legal or tax advice. Rates, thresholds and due dates change; confirm current figures with the tax authority or your adviser.
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