Frequently asked questions

Late Payment Penalty or Late Filing Fees (Corporate Income Tax)

You do not need to contact us if you are requesting for a waiver of your penalty or composition fee. Please make your request through the Request Penalty Waiver (PDF, 4.58MB) digital service at

Appeals for waiver of late payment penalty will only be considered if:

  1. You have paid the overdue tax in full by the due date as stated in the late payment penalty notice and the payment is receipted/ reflected in the company's tax account at; and
  2. No waiver has been granted in the past 2 calendar years or you have paid on time for the past 2 years.

Appeals for late filing fees/ composition amounts will only be considered if:

  1. You have submitted the outstanding tax returns and/or documents before the due date stated in the offer of composition; and
  2. You have filed your tax return on time for the past 2 years.

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Corporate Income Tax Matters Contact Number

Estimated Chargeable Income
Filing of Form C-S/ Form C-S (Lite)/ Form C
General Payment Matters

The filing due date for the Year of Assessment (YA) 2023 Corporate Income Tax Return (Form C-S/ Form C-S (Lite)/ Form C) for companies is 30 Nov 2023. For filing matters relating to sole-proprietorships and partnerships and enquiries on e-Submission of employment income, please refer to Individual Income Tax.

1800 356 8622 for local calls
(+65) 6356 8622 from overseas
Late Filing/ Payment Matters
(e.g. Letters on reminder to file/ pay, penalties for late filing/ payment)
1800 356 8622 for local calls
(+65) 6356 8622 from overseas
Other Enforcement Actions
(e.g. Letters on Court Summons, appointment of bank/ tenants as agents for payments)
(+65) 6356 7012

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 general tax enquiries using these online forms: