A foreigner, who would like to register a Sole-Proprietorship in Singapore, is required to appoint a locally resident authorised representative whilst he continues to reside outside Singapore.
If a foreigner wishes to register a Partnership in Singapore whilst he continues to reside outside Singapore, there must be a least a locally resident partner in the business firm. If all the partners are foreigners, a locally resident authorised representative must be appointed.
Foreigners who wish to set up a business and be present in Singapore to manage its operations are strongly advised to seek approval from Ministry of Manpower (MOM) before registration. If any of the proposed partners do not have a SingPass, the applicant must engage the services of a registered filing agent (e.g. law firm, accounting firm or corporate secretarial firm) to submit the online application on his behalf. Only an individual with a SingPass can proceed to submit any online transactions.
(Adapted from Source: ACRA, Foreigners and Sole-Proprietorships or Partnerships)