The Reserve Bank of Australia has moved to limit the charging of excessive fees for using a credit card in Australia.
Bernard Hickey is calling on the New Zealand authorities to do something similar.
A key reason is that there is usually little or no practical choice, especially when purchasing online.
And it is unclear who actually regulates or approves merchant or issuers behaviour relating to credit card use in New Zealand.
The airlines are one of the main users of these fees and they can amount to a significant percentage of the transaction - up to 10% or more in some cases.
The Australian rules now require merchants to charge no more than the direct costs involved.
Bernard Hickey reports that Jetstar is moving to rename the fee a "booking fee" to get around the rules in Australia and is likely to do the same in New Zealand.
He spoke to Rawdon Christie on the TVNZ show Breakfast this morning.