People spend as much as 20 percent more on jewellery, flowers and adult entertainment when the All Blacks play, new figures show.
Paymark's monthly spending review focused on the host cities for the All Blacks' three tests with Wales last month.
There was not much difference in spending in Auckland and Northland over the match weekend, but about $900,000 more than usual was spent in Wellington, a spending increase of 3.1 percent, and $1.2 million more in Dunedin, an increase of 6.7 percent.
Florists, adult entertainment venues, jewellery retailers and taxis experienced a lift of more than 20 percent on some nights.
However, Paymark said the jump in spending in these areas "may just be a chance event".
People spent less at art galleries and cinemas on game nights.
The All Blacks won all three test matches.