Tips on e-Filing for Dormant Company

Getting your Access Code and authorising an "Approver" for "Corporate Tax Matters" beforehand, and other useful tips on e-Filing for dormant company

Before you e-File for Dormant Company

Before you use the "File Form C-S/ C for Dormant Company" e-Service to complete and e-File for dormant company, please do the following:

  1. Ensure that you have been duly authorised by the company as an "Approver" for “Corporate Tax Matters” via the e-Services Authorisation System (EASY).
  2. Ensure that you have the company's tax reference number and your personal SingPass or IRAS PIN
  3. Set aside at least 5 minutes to complete this electronic tax return.

e-File Form for Dormant Company in 4 Simple Steps

a.   Request a new Access Code by downloading the application form if:

  • Your company does not have an Access Code; or
  • Its existing Access Code is no longer valid.

b.   Complete and submit the form to IRAS via fax or email.

You may skip this step if you already know your company's Access Code.

You need to authorise yourself/ a third party as an "Approver" for “Corporate Tax Matters” before you/the third party can e-File.

a. Log in to the e-Services Authorisation System (EASY) using your company's Access Code.

b. Authorise yourself/ a third party as an "Approver" for “Corporate Tax Matters” and log out.

You may skip this step if you have already authorised yourself or a third party as an "Approver".

a. Log in to

b. Select My Organisation's/Business' Tax Matters.

c. Key in your personal SingPass or IRAS PIN, followed by the Tax Reference No. of your company.

a. Click on Corporate Tax and select File Form C-S/ C.

b. Select the Year of Assessment you are filing, followed by Form for Dormant Company to begin completing the Form.

c. Click on Confirmation Page to verify that the information declared is correct. Thereafter, complete the Declaration and fill in Details of Filer & Contact Person.

d. Click on Submit.

e. You will receive an instant acknowledgement upon successful filing.


Points to Note when e-Filing

Filing Deadline

Your company enjoys the extended filing due date of 15 Dec, instead of 30 Nov, when you e-File for dormant company.

Online Help

Please click on the iHelp icon <  i2> should you require on-the-spot guidance as you e-File the Form for Dormant Company.


Please do not leave your filing session idle for more than 20 minutes. Otherwise, the session will expire and you will be required to log in to the portal again. 

Acknowledgement of Successful e-Filing

Upon successful e-Filing, you will receive an instant acknowledgement of receipt. The same acknowledgement will also be available at under "View Corporate Tax Notices" e-Service.

User Guides

Detailed User Guides for:

 Frequently Asked Questions (FAQs)

 For more details on e-Filing for dormant company, please refer to our FAQs (139KB). 


Contact Us

Please contact us if you need assistance or clarification on e-Filing for dormant company:

  •  Email us via myTax Mail
  • IRAS Corporate Tax Helpline: 1800-356 8622 (8 a.m. to 5 p.m. from Mon to Fri)


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