Kiwis' online spending continued to grow last month.
However, overseas merchants are reaping more of the benefits of the web-based purchases than domestic stores, a monthly survey shows.
The BNZ online retail sales index showed online spending was up 13 per cent last month compared with December 2012.
Growth in online purchases from overseas merchants outpaced domestic online spending.
Overseas online purchases were up 24 per cent in December, compared with the same month the previous year, with domestic online purchases up 7 per cent.
The survey showed strong growth in online spending on Christmas Day and Boxing Day, up 13 per cent and 17 per cent respectively.
However, online spending on both days was lower than what New Zealanders typically spent online each day throughout the year.
Online spending on Christmas Day accounted for a large share of retail shopping on that day, largely because most physical stores were closed, the survey said.
About a quarter of total retail sales on Christmas Day were made online.
Almost 60 per cent of the online Christmas Day shopping was on overseas sites.
- Fairfax Media