"It could well be that there is no legal framework governing the intelligence agencies' access of tax information and they feel that for whatever reason, as part of this tightening and extension of legal cover for operations that may or may not be on the margins of legality, that they need to put something in that would allow the IRD to share information with them on a regular basis," he said.
Buchanan said existing law governing the agencies has been a "dog's breakfast" lacking long-term planning and foresight, and while the recommendations still need ratification by parliament, they should provide legal cover to operatives who are currently working without any legislative protection.
It could well be that there is no legal framework governing the agencies' access of tax information and they feel that for whatever reason, as part of this tightening and extension of legal cover for operations that may or may not be on the margins of legality.
The report, written by former Finance Minister Michael Cullen and incoming Governor-General Patsy Reddy, recommended the legislation should allow for case-by-case access to tax information, subject to the appropriate authorisation if the person is a citizen or foreigner.
New Zealand's provisions around tax secrecy are under scrutiny in a separate review of tax legislation, with the government looking to scale back New Zealand's privacy protections to allow broader and wider sharing of taxpayers' information. The government wants to let IRD share more information on an anonymised format to provide better services, and also improve how law enforcement can use its information more effectively. That also extends to cross-border sharing as US legislation aimed at preventing tax evasion imposes stricter standards on other jurisdictions.
Tax secrecy has traditionally been considered necessary to encourage compliance by taxpayers and it has been said it was the quid pro quo for Inland Revenue's broad powers to collect information by balancing privacy interests on one hand with assessing tax liability on the other.
Clearly the government can see that in addition to the efficiency gains, the sharing of information amongst agencies (and using the different technologies and analysis tools each has) may assist in combatting serious fraud, money laundering, etc.
Geoff Blaikie, who leads the New Zealand tax practice at EY New Zealand, said his firm is comfortable about the sharing of personal details to avoid people having to notify multiple agencies, but aren't enthusiastic about the swapping of income information, especially where the taxpayer isn't told that information is being shared.
"Clearly the government can see that in addition to the efficiency gains, the sharing of information amongst agencies (and using the different technologies and analysis tools each has) may assist in combatting serious fraud, money laundering, etc," Blaikie said. "The question on the suggestion that there be sharing with intelligence agencies and how that might differ from the police one will depend on whether there is just wholesale information sharing with the intelligence agencies."