Global uncertainty casting a shadow over federal budget

Treasurer Jim Chalmers says the federal budget will be handed down in "difficult circumstances". (Lukas Coch/AAP PHOTOS) (AAP)

The global economy is suffering the lowest growth rate in almost two decades and casting a shadow over the upcoming federal budget, the treasurer warns.

Jim Chalmers said it was the weakest global growth in years aside from the depths reached during the global financial crisis and the COVID-19 pandemic.