Financially, a system as vast as NAIS could be extremely costly. Additionally, there is concern that the costs of complying with the program will drive small farmers out of business, due to the cost associated with registering each animal. Small farmers and families that sell off parts of their herds or flocks every year would have to register and pay a registration fee for every head of livestock or poultry, while corporate farms with large herds or flocks that move through the production chain as a group, will only have to pay the fee equivalent of owning one animal.