Associate Professor Ann Kayis-Kumar's research conceptualises tax as a mechanism to achieve social justice across the taxpaying spectrum; ranging from improving the integrity of taxing multinationals to improving the wellbeing of financially vulnerable individuals and small businesses.

She is the Founding Director of UNSW Tax and Business Advisory Clinic, which bridges the gap between grassroots community support and empirical research by supporting people in serious hardship and in turn aggregating client data to identify systemic issues. Ann has presented her research team's findings at multiple Parliamentary hearings, and is also regularly involved in the media, with appearances on ABC's The Business, ABC Radio National and Channel 10's The Project. Notably, Ann's work on the weaponisation of the tax system by perpetrators of financial abuse has been cited by the Report of the Rapid Review of Prevention Approaches to End Gender-Based Violence. Ann also regularly presents her research at national and international conferences, including at Oxford University and the University of Cambridge.

Ann serves on industry-level committees including the ATO's Small Business and National Tax Clinic Stewardship Groups, the Law Council of Australia's Taxation Committee, and the Tax Institute’s NSW Technical and SME & Tax Practitioner Committees.