The Minister in charge of the Government's Infrastructure Investment Summit says deals will mostly be done in the coming weeks, months and years ahead.

More than a hundred companies, managing about six trillion dollars in capital, are at the Government's two day summit in Auckland.

But Chris Bishop says there's already been one tangible commitment from Australian investor Plenary group.

"They've promised to set up a New Zealand office here and they've promised to bid on the next five PPP opportunities that come up - that is a commitment that they have just made, I think, in the last 24 hours, on the basis of what they heard at the summit and in the leadup to it. So that's good."

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Over in Australia, Westpac's head is urging people to stop complaining over the new tariffs set out by the Trump administration.

The US President has recently confirmed Australia won't be exempt from new tariffs on steel and aluminium imports going forward.

Australian correspondent Murray Olds says it's likely Australia will face more tariffs in the coming days - and experts are suggesting Australia should shift focus to the Asia-Pacific region.

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Investors have voiced concerns over declining US market growth - resulting in a significant drop.

US President Donald Trump also didn't rule out a recession in a recent interview, which led to further pullbacks this week.

Milford Asset Management's Stephanie Batchelor explained further.

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