Economists are warning the Australian dollar is falling with no end in sight, with some saying it could reach as low as half a US dollar before beginning to rise again.

Most analysts had been predicting the dollar would slump to US70¢ by early in 2016, but are now revising their forecasts lower after the Australian dollar dropped through this twice on Wednesday and continued to hover perilously close to doing so again throughout Thursday, trading at just US70.19¢ in late trade.

How low can the dollar go? Credit:Dominic Lorrimer

One of the few economists who predicted the Australian dollar could slide to US66¢ by the end of this year is now warning a 50s handle is possible by the end of 2016.