"Further, it creates temptation and incentive to resort to bribery to close the deal, especially in countries where it might be an accepted practice."
The report also argues New Zealand companies in overseas ventures face the added risk of being caught by anti-bribery laws which came into force last year in the United Kingdom.
"If you've got a New Zealand company that has some form of operations in the UK and someone connected to that company gets involved in paying a bribe or corrupt activity in a high-risk jurisdiction [elsewhere in the world], the UK can have a crack at them," said Deloitte's Ian Tuke.
Organisations could be prosecuted for failing to prevent bribery by anyone associated with their company, not simply their own employees, he said.
"A New Zealand company who could be a joint venture in China and have agents working on their behalf, if those agents start paying bribes and the UK gets wind of it and you haven't put in place the framework to prevent corrupt activity you're on the hook."