While the number of demi-billionaires rose 11 per cent globally to 6900 people.
Vincent White, managing director at the Wealth-X Institute - a global wealth information and insight business - said it had been an auspicious time for wealth creation.
"We have been experiencing 'Goldilocks' economic conditions: not too hot, and not too cold. These make it easy to do business, provide a good environment to raise capital and, above all, encourage entrepreneurialism – the key to wealth creation"
The report shows the number of Kiwi multi-millionaires increased from 5850 to 6470 between 2016 and 2017 while the numbers of ultra-wealthy rose from 350 to 390 people over the same period.
And it predicts even more growth to come with the number of Kiwi multi-millionaires expected to rise 32 per cent by 2022 while the numbers of ultra-wealthy will rise 31 per cent.