Taxpayers who dodged the top personal tax rate by paying themselves artificially low salaries have until the end of this month to confess.
The Inland Revenue Department (IRD) issued a warning today that its concession to make a voluntary disclosure - granted after the outcome of the Penny and Hooper case in 2011 - would soon run out.
"There is still time for people who are in a similar situation to Penny and Hooper and have used a similar company or trust structure to artificially lower their incomes to discuss their arrangements with Inland Revenue," said group tax counsel Graham Tubb.
Ian Penny and Gary Hooper were two Christchurch surgeons who used company structures and family trusts to artificially lower their salaries to avoid a higher personal income tax rate introduced in 2001.
The Supreme Court sided with IRD in its judgement that "income derived from personal exertion should belong in its appropriate taxation band and should not be inappropriately diverted away".