The gains were good news after only "modest" spending during the Christmas shopping season, said Paymark chief executive Simon Tong.
But despite positive overall figures, things were still tough for some retailers and in some regions.
"A number of sectors such as accommodation providers and consumer electronics retailers have experienced below average growth," Tong said.
"Likewise, spending growth was weak in the West Coast and Southland."
Looking at the regions, Canterbury had the strongest annual spending growth of 8 per cent annually. Waikato spending increased 7.6 per cent.
The automotive sector saw growth in both repairs and servicing, up 14 per cent, and parts and accessories, up 9.7 per cent.
The volume of card transactions last month was 6.3 per cent higher than a year ago.
"Importantly, New Zealanders are still increasingly finding card payment to be convenient - for purchases both big and small," Tong said.
"Nationwide in 2012, we increased our card spending by $1.5 billion. We hope to see this positive growth trend continue in 2013, and January has been a good start on balance."