Katrina Di Marco Appointed to Lead May Budget Tax Changes

Treasury Taps Katrina Di Marco to Steer May Federal Budget Tax Changes

Katrina Di Marco has been appointed as the new head of Treasury’s revenue group, taking over from Diane Brown. This change, reported on September 13, 2026, places Di Marco in charge of key tax matters related to the May federal budget. Her primary focus will be on refining and implementing changes concerning capital gains tax and trusts.

The appointment signifies a shift in leadership as the Treasury moves from announcing budget measures to the detailed work of shaping their practical application. Di Marco’s role will be central to this process, guiding the department’s efforts as officials develop the necessary rules and frameworks. The Treasurer, Jim Chalmers, continues to oversee the broader policy direction.

Di Marco to Lead Work on Capital Gains Tax and Trusts

The May federal budget introduced significant changes to capital gains tax and trusts. These measures are now the core responsibility of the newly appointed deputy secretary for the revenue group. Di Marco will steer Treasury’s work in defining the specifics of these policy changes.

Treasury’s function is to help shape the regulations that underpin these budget initiatives. As Di Marco takes the helm, she will oversee the department’s efforts to refine and put into practice these revenue-generating measures. The assignment directly links the leadership transition to the ongoing development of the government’s budget-related tax policies.

The two main areas Di Marco will focus on are capital gains tax and trusts. This dual focus means she will be at the center of the department’s work on these specific policy settings. While Treasurer Chalmers remains the ultimate authority on government-level decisions, Di Marco’s role is critical in the detailed development and advice provided by the Treasury. The specific details of these tax measures will continue to be worked out through this ongoing process.

Brown’s Departure Sets the Stage for Handover

Diane Brown had announced in July 2026 her intention to step down the following month. This prior decision established the timeline for the leadership transition within the revenue group. The handover from Brown to Di Marco is a result of this pre-existing personnel plan, rather than a reaction to new tax developments.

The Treasury is managing this official change while the budget files are still undergoing further work. Brown’s departure means Di Marco will now manage the department’s responsibilities concerning the capital gains tax and trust measures. This connection ensures that the leadership change is directly tied to the government’s continuing budget work.

The department’s attention is now directed towards establishing the necessary settings to advance these measures. Treasurer Chalmers will continue to guide the policy changes as the Treasury develops its advice and works on implementation. The capital gains tax and trusts remain the practical focus of Di Marco’s new role within the revenue group.

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