Disadvantages: not a cheap card reader
NAB MPOS isn’t the most cost-effective mobile card reader out there. Although you are charged $135 upfront for ordering the mobile terminal, you do not actually own it given the monthly rental fee of $10 and excessive non-return fee if you fail to return it when cancelling the service.
In line with that, the miscellaneous charges such as those for card reader replacement seem excessive. Why does replacing a card reader cost so much more than ordering the first one? Again, this seems typical of what you might expect from a traditional bank.
If quick settlement is an upside of doing business with a large bank, then seemingly excessive fees and penalties might be some of the downsides.
Finally, the business account requirement with National Australia Bank could be a hurdle (and extra hassle) for some merchants. Conversely though, it may be an advantage for businesses who already bank with them.