This document summarizes the key aspects of sole proprietorships in Singapore. A sole proprietorship is owned and operated by one individual who has unlimited liability for the business's debts and obligations. It is a simple business structure suitable for small operations with low risks. Foreigners can register a sole proprietorship by appointing a local resident manager. The business ends when the owner dies and profits are taxed as personal income. While easy to set up and manage, sole proprietorships pose high financial risks to the owner and make raising capital difficult.