Delaying adaptation to climate risks may result in higher overall costs in future when adaptation is more urgent and impacts more extreme  . Estimates of the magnitude of adaptation costs and benefits in the region are localised and sectoral  or regionally aggregated . Adaptation costs are expected to increase markedly for higher RCPs, for example, a tripling of expected costs between RCP2.6 and RCP8.5 for sea level rise  protection in Australia . Existing governance arrangements for funding adaptation are inadequate for the scope and scale of climate change impacts anticipated; dedicated funding mechanisms that can be sustained over generations can enable more timely adaptation .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report