A global trade expert says New Zealand will imminently be slapped with a blanket 12.5 percent tariff on all exports to the United States, expected to be announced overnight.

A global trade expert says New Zealand will imminently be slapped with a blanket 12.5 percent tariff on all exports to the United States, expected to be announced overnight.

One of the biggest trade gatherings held in New Zealand for two decades has wrapped up.

Tariffs on NZ exports could rise to 12.5% as soon as Friday.