I work retail, and we're forced to charge slightly different rates to credit card users (store policy, I don't agree with it!). However most new debit cards in New Zealand these days are Visa ones, which confuse the hell out of me. Some banks don't put "debit" on the card and our machine will show "ASB Visa" for others.
I hope you guys are doing that by giving cash discount, instead of charging extra on credit (yeah, I know). That is against both visa's and mastercard's terms of service, and they will go after you for that.
Hm. In North America, the surcharge is against VISA terms of service (linky Canadian government resource below - the terms of services are largely the same within North America). In addition, surcharges are illegal in 10 US states.
