Press Release – New Zealand Government Commerce and Consumer Affairs Minister David Clark has today announced the Governments next steps to reduce merchant service fees, that banks charge businesses when customers use a credit or debit card to pay, which is estimated to save New Zealand businesses … Hon Dr David Clark Minister of Commerce and Consumer Affairs Commerce and Consumer Affairs Minister David Clark has today announced the Government’s next steps to reduce merchant service fees, that banks charge businesses when customers use a credit or debit card to pay, which is estimated to save New Zealand businesses approximately $74 million each year.