In the year to January, we actually gained 1,264 people from across the ditch, the highest level since 1984. Nearly two-thirds of the migrant arrivals from Australia were New Zealand citizens, so there are clearly a few expats coming home as well.
Australia is a much bigger country and it's always offered attractive job prospects, particularly for blue-collar workers. Wages are higher and workers in many industries experience better conditions.
If their economy was in better shape, and their political backdrop had not resembled a game of musical chairs in recent years, those traditional drawcards might be more alluring. However, New Zealand looks stronger than Australia on most measures today, so we are a victim of our own success to some degree.
This dynamic is reflected in sharemarket returns during recent years. While shares in New Zealand and the United States have long surpassed their pre-GFC highs, the Australian market is still more than 15 per cent below its 2007 peak.
Strong migration is certainly doing plenty of good for our economy. An increasing population boosts activity, and many businesses (both large and small) will be seeing benefits from an increasing pool of customers.
While migration is partly to blame for minimal wage growth, workers arguably benefit from greater job security as businesses are in a stronger position.
There's no shortage of corresponding negative spin-offs though. The housing problems are well documented, while the infrastructure limitations that started in Auckland seem to be spreading to other parts of the country.
Closing the borders probably isn't the answer, but managing the numbers coming in seems fairly obvious, at least until Australia gets its act together.
Mark Lister is Head of Private Wealth Research at Craigs Investment Partners. This column is general in nature and should not be regarded as specific investment advice.