Any warming of our planet will inevitably lead to a higher sea level due to thermal expansion of ocean water and melting of ice stored on the land in glaciers and ice sheets. Sea level has been rising slowly over the past 100 years. Rising sea level impacts coastal regions both by inundation and by causing the shoreline to recede through erosion. It will have a major impact on human societies because of the significant concentration of communities and infrastructure in coastal regions. Understanding the contributions to present sea-level rise, and their causes, is crucial to projecting what might happen in the future. The aims of this document are: 1. To update the Australian Government and the community on the latest developments in sea-level rise research, particularly those since 2008 when the ACE CRC produced Briefing: a post-IPCC AR4 update on sea-level rise; 2. To explain the components of sea-level rise and summarise our knowledge of how these could influence sea-level rise in the future; and 3. To inform policymakers, planners and infrastructure developers on the tools available to assist with adaptation to future sea-level rise.