This Practice Note is produced in partnership with Ms Koh Swee Yen, Senior Counsel and Partner, Mr Joel Quek, Partner, Ms Magdalene Ong, Partner, Ms Divya Harchandani, Foreign Lawyer and Ms Thea Elyssa Vega, Foreign Lawyer all of WongPartnership LLP, Singapore. This Practice Note considers the position of multiple contracts, joinder and consolidation under the Arbitration Rules of the Singapore International Arbitration Centre (SIAC) (7th Edition) 2025 (2025 SIAC Rules). The th Edition of the SIAC Rules came into effect from 1 January 2025 and can be accessed here. The 2025 SIAC Rules apply to arbitrations commenced on or after 1 January 2025, unless the parties have agreed otherwise. SIAC's multi-party and multi-contract rules The 2025 SIAC Rules includes detailed provisions in respect of the following: • multiple contracts (2025 SIAC Rules, r 15) • consolidation (2025 SIAC Rules, r 16) • co-ordinated proceedings