Limitation Act 1959: Governs time limits for bringing claims: 6-year limitation period for contractual claims and 3-year limitation period for claims in tort. Critical for determining if the debt claim is still within the legal time frame.

Contracts Act (Cap. 53): Primary legislation governing contract formation, validity, and enforcement in Singapore. Includes common law principles of contract and requirements for evidence of the underlying contract/debt.

Civil Law Act (Cap. 43): Contains provisions regarding interest rates and rules on contractual penalties. Essential for determining permissible interest charges in the demand notice.

Rules of Court 2021: Establishes legal procedures for debt recovery, pre-action protocols, and requirements for legal proceedings. Guides the formal aspects of the demand notice process.

Monetary Authority of Singapore Act: Provides regulations regarding financial transactions and interest rate guidelines. Relevant for ensuring compliance with Singapore's financial regulations.

Moneylenders Act: Regulates licensed moneylenders, including interest rate caps and restrictions. Applicable if the debt involves licensed moneylending activities.

Consumer Protection (Fair Trading) Act: Protects consumer rights in transactions and establishes fair trading requirements. Particularly relevant if the debt involves consumer transactions.

Personal Data Protection Act 2012: Governs the handling of personal information and privacy considerations in legal documents. Ensures compliance with data protection requirements in the demand notice.

Insolvency, Restructuring and Dissolution Act 2018: Addresses situations involving potentially insolvent debtors and bankruptcy considerations. Important for understanding available remedies and debtor's status.