If the sole-proprietor or the partnership is GST registered, the business owner also has to apply for cancellation of GST registration with IRAS. Find out more at IRAS website.
A sole-proprietor / partner may notify ACRA it has ceased business by filing the "Cessation of Business" online via BizFile+.
Business owners or authorised representatives must ensure that they enter the correct information in the "Cessation of Business" as the business will be ceased immediately after the application is submitted.