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Operating hours
Due to a corporate event, tax advisory services at the Taxpayer & Business Service Centre (TBSC), via helpline or live chat, will be unavailable for four hours (1pm to 5pm) on Friday, 7 November 2025.
You could still access information and transaction services via the IRAS website and IRAS bot or write to us via myTax Portal. Regular operating hours (8am to 5pm) will resume on Monday, 10 November 2025. We appreciate your understanding and look forward to serving you soon.
You could still access information and transaction services via the IRAS website and IRAS bot or write to us via myTax Portal. Regular operating hours (8am to 5pm) will resume on Monday, 10 November 2025. We appreciate your understanding and look forward to serving you soon.
- 8:00am to 5:00pm for Mondays to Fridays (except Public Holidays)
- 8:00am to 1:00pm for Eve of Christmas, New Year and Chinese New Year (if it falls on a working day)
Call us
Helpline operating hours:
Due to a corporate event, tax advisory services at the Taxpayer & Business Service Centre (TBSC), via helpline or live chat, will be unavailable for four hours (1pm to 5pm) on Friday, 7 November 2025.
You could still access information and transaction services via the IRAS website and IRAS bot or write to us via myTax Portal. Regular operating hours (8am to 5pm) will resume on Monday, 10 November 2025. We appreciate your understanding and look forward to serving you soon.
You could still access information and transaction services via the IRAS website and IRAS bot or write to us via myTax Portal. Regular operating hours (8am to 5pm) will resume on Monday, 10 November 2025. We appreciate your understanding and look forward to serving you soon.
- Mondays to Fridays: 8 am to 5 pm (Avoid peak hours from 11.30am to 2pm)
- Saturdays, Sundays, and Public Holidays: Closed
- Eve of Christmas, New Year and Chinese New Year (if it falls on a working day): 8am to 1pm
To continuously improve our taxpayer experience, calls may be recorded for our quality monitoring and coaching purposes.
Kindly note that mobile calls to 1800 service lines incur airtime charges. Calls are free of charge only from regular land lines.
| Goods & Services Tax Matters | Contact number |
|---|---|
GST (For helpline menu options, see below) | 1800 356 8633 for local calls (+65) 6356 8633 from overseas |
| Late Filing / Payment Matters (e.g. Letters on reminder to file / pay, penalties for late filing / payment) | 1800 356 8633 for local calls (+65) 6356 8633 from overseas |
| Tax Recovery Actions (e.g. Notice to Attend Court/ Summons, appointment of bank / employers as agents for payments, travel restriction order) | (+65) 6356 7012 |
GST Helpline menu options
- For English Press 1, for Mandarin Press 2
- If you would like to report a scam incident, Press 1. For all other matters, please continue to hold
- To check GST registration or deregistration status, Press 1
- To check GST refund status, Press 2
- To check GST GIRO status, Press 3
- To request waiver of penalty, Press 4
- To chat online with a tax officer, Press 9
- To speak with a tax officer, Press 0
Send an enquiry
For added security, email your case-specific enquiries via myTax Mail on myTax Portal using your Singpass, Singpass Foreign user Account (SFA) or Corppass.
If you do not have Singpass, SFA or Corppass, email your tax enquiries using these online forms: