The country's main electronic payments provider, Paymark, says credit card use is surging as the new form of contactless transactions takes off.
Paymark, which processes around three quarters of all electronic transactions, says spending through its network jumped more than 8% in October, compared with the same month last year.
Double digit year-on-year growth was recorded in hardware stores, liquor outlets and cafes and restaurants.
Paymark acting chief executive, Paul Whiston says spending on debt cards rose 6%, while credit card use jumped 13%.
He says what's probably influencing the figures is the growth in contactless transactions where the consumer only has to wave a card at a reader for purchases of less than $80, rather than having to insert or swipe the card in the machine.
Mr Whiston says those transactions are recognised as credit transactions and there has been significant growth in the number of cards that are in the market and in contactless enabled terminals.
He says in October there were 1.25 million transactions that were contactless, compared to around April or May when there were only 150,000 to 200,000 transactions of this type.
Mr Whiston says the rise in spending reflects growing consumer confidence across the country.