With effect from 1 July 2024, the new ‘thin cap’ regime is complemented by the debt deduction creation rules (DDCR) which target debt deductions relating to certain related party arrangements. The DDCR is complex with broad application. It contains a specific anti-avoidance rule. For many taxpayers, there is a need to revisit historic arrangements and trace funds. Evidence is required to prove that the DDCR does not apply. This session walked through the scope of the DDCR, its interaction with other measures and the Commissioner’s administrative approach.