These are the simplest forms of business organisation and are usually more suitable for small-scale businesses. Both the sole proprietor and the partners are subject to unlimited liability with regard to the debts of the business.
Any person who is carrying on business in Singapore either as a sole proprietor or in partnership is required to register a business firm with ACRA. However, some forms of businesses, which are carried out by professionals such as architects, engineers and doctors, are required to register with their respective professional bodies as well. A sole proprietorship or partnership may be required to appoint a manager who is responsible for the management of the business. Where the sole proprietor or each of the partners of a business firm is a foreigner, the manager must be a Singapore citizen, a Singapore permanent resident or a valid employment pass holder.