Mental Capacity Act 2008: Primary legislation governing mental capacity requirements for the principal granting authorization. Defines and ensures valid decision-making capacity requirements.

Powers of Attorney Act (Chapter 231): Core legislation governing the creation, execution, and formal requirements for valid powers of attorney in Singapore.

Electronic Transactions Act (Chapter 88): Legislation governing electronic transactions and signatures, relevant if the authorization document will be executed electronically.

Contracts Act (Chapter 53): Fundamental legislation covering contract formation principles, including requirements for valid consent and consideration in agreements.

Stamp Duties Act (Chapter 312): Legislation governing stamp duty requirements, particularly relevant if the authorization involves property transactions.