Retail spending charged to electronic cards rose 0.3 per cent last month, driven by food and fuel, according to data from Statistics New Zealand.
The seasonally adjusted increase was the same as recorded in December and took annual growth in spending paid for with the plastic (which represents two-thirds of all retail spending) to 4.7 per cent.
"Consumer spending is back on to the modest upward trend of the last few years, shaking off its September quarter soft patch," Westpac economist Michael Gordon said.
"While nominal spending is growing only slowly, subdued price pressures, and indeed falling retail prices, are helping to lift spending in real terms."
He expects the December quarter retail sales figures, to be published on Friday, to show a 2 per cent bounce in volume terms.