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Frequently asked question
Call us
Helpline operating hours:
- 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: 8am to 1pm
Due to a corporate event, tax advisory services at the Taxpayer & Business Service Centre (TBSC) and via helpline 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.
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.
| Phone number | |
|---|---|
| Withholding Tax Treatment for Foreign Professionals / Directors | 1800 356 8300 for local calls (+65) 6356 8300 from overseas |
| Withholding Tax Treatment for Non-Resident Companies | 1800 356 8622 for local calls (+65) 6356 8622 from overseas |
| Late Filing of Withholding Tax Forms / Confirmation of Payment / Tax Recovery of Section 45 Withholding Tax | (+65) 6356 7012 |
Send an enquiry
For added security, email your case-specific enquiries via myTax Mail in myTax Portal using your Singpass, Singpass Foreign user Account (SFA) or Corppass.
If you do not have Singpass, SFA or Corppass, email your general tax enquiries using these online forms: