Legal Profession Act (Cap. 161): Primary legislation governing legal practice in Singapore, particularly Part VA which covers Professional Conduct, Billing and Costs, including requirements for valid solicitor-client costs agreements
Legal Profession (Professional Conduct) Rules 2015: Subsidiary legislation detailing rules on fee arrangements, disclosure obligations, and professional responsibilities for lawyers in Singapore
Singapore Rules of Court 2021: Procedural rules including Order 23 on Security for Costs and provisions relating to legal costs and assessment
Legal Profession (Solicitors' Remuneration) Order: Regulatory framework providing guidelines on reasonable fees, fee calculation methods, and scale of costs for legal services
Law Society Guidelines: Professional guidelines including Practice Directions and Guidance Notes on billing practices and professional ethics requirements
Consumer Protection Laws: Relevant when the client is an individual, providing additional protections and requirements for consumer contracts
GST Act: Tax legislation relevant for the proper calculation and charging of Goods and Services Tax on legal services
Contract Act (Cap. 53): General contract law principles governing formation, validity, and enforcement of contracts in Singapore
Electronic Transactions Act: Legislation governing electronic execution of documents, relevant if the costs agreement will be executed electronically
