Consumer Protection (Fair Trading) Act 2003: Primary legislation governing consumer rights and fair trading practices in Singapore. Establishes consumer protection against unfair practices and defines requirements for return policies and procedures.

Sale of Goods Act: Regulates contracts for the sale of goods, defines conditions and warranties in sales transactions, and establishes rights for return of defective goods.

Lemon Law: Part of Consumer Protection (Fair Trading) Act that specifically addresses defective goods, provides framework for repair, replacement, or refund, and sets timeframes for making claims.

Electronic Transactions Act: Governs electronic communications, records, and signatures in transactions. Particularly relevant for online returns processing and electronic documentation.

Personal Data Protection Act 2012 (PDPA): Regulates the collection and handling of customer personal data, ensuring appropriate data protection measures in return forms and customer information handling.

Consumer Protection (Trade Descriptions and Safety Requirements) Act: Governs product descriptions and safety standards, affecting return reasons and documentation requirements in return authorization processes.

GST Regulations: Tax implications and requirements for handling returns and refunds under Singapore's Goods and Services Tax system.