Business Roundtable (BRT) firms have faced intense scrutiny from investors, media, and the public following their 2019 “Statement on the Purpose of a Corporation,” which marked a shift from shareholder-centric governance to a stakeholder-focused approach. This shift has sparked debate over whether BRT firms are genuinely committed to social responsibility or merely using it as a branding strategy without implementing meaningful changes. This paper contributes to the debate by empirically examining a key dimension of social responsibility—corporate tax behavior.