"It is a fact of commercial life in New Zealand that many businesses are dominated by foreign multi-nationals and that intra-group financing is both commonplace and necessary," Keating said. "There is a risk that uncertainty arising from the court's findings could be a deterrent to foreign funding of many New Zealand companies."
Alesco is arguing it followed the IRD's own guidelines on the tax treatment of 'hybrid' debt and equity instruments such as OCNs, which allowed the deduction of 'deemed' interest.
However, Deputy Solicitor-General Matthew Palmer told the court yesterday the arrangements were artificial and contrived, and had no purpose other than to avoid tax.
"As a matter of substance, these OCNs are an interest free loan, stapled to a valueless and essentially purposeless warrant," he said. "Alesco already held that which the option would have given."
The IRD contended "these OCNs do not exist in the real world, there is no commercial reason to use an interest-free OCN issued at par between a parent and a 100% subsidiary" and the rules on hybrid instruments were intended for arms-length commercial relationships.
Ernst & Young's Keating argues there are already cross-border tax provisions that target related-party funding, which limit how much debt funding New Zealand companies can have.
"It has always been considered that so long as companies stay within these legislative boundaries, they would be safe," she said.
"The IRD's arguments here could add a third and (for most) unexpected restriction on related party financing under the general anti-avoidance provisions of the Income Tax Act," Keating said. "The implications are potentially huge" and could be used to produce the "absurd result" of allowing cash repayments of debt to be challenged.