A Trump administration tariff deadline is creating "chaos" for postal networks and retailers globally, as low-value parcels will be slugged with import duties from next week.

Australia Post has temporarily suspended transit shipping to the US ahead of new tariffs due to come into effect next week.

Global postal carriers have described a “chaotic” environment as some European services halt US shipments altogether.

From August 29, low-value parcels imported into the US will attract tariffs or flat fees.