Purpose This study aims to examine the impact of Financial Accounting Standard Board’s Accounting Standard Update (ASU) 2014–15 on auditors’ going concern reporting. ASU 2014–15 provides accounting guidance for managers related to going concern issues, but there is evidence that regulatory changes affect auditor behavior. The authors examine if auditors’ propensity to issue going concern opinions (GCOs) for non-bankrupt, financially distressed firms changes after ASU 2014–15 became effective, and if the proportion of client bankruptcies with prior GCOs changes after ASU 2014–15 became effective. Design/methodology/approach The authors examine audit reports for non-bankrupt, financially stressed firms three years before and after the effective date of ASU 2014–15 to see if the propensity to issue a GCO differs in the pre- vs post-period. The authors then examine bankrupt, financially stressed firms to determine if the proportion of bankruptcies preceded by a GCO differs in the pre- vs post-period. Findings The authors find a significant increase in GCO reporting for non-bankrupt, financially stressed firms in the post-ASU 2014–15 period, suggesting auditor conservatism increased. The propensity for auditors to issue a GCO to bankrupt firms also increased significantly in the post-ASU period, providing evidence that auditors became more accurate, as more bankruptcies were preceded by a GCO than in the pre-ASU period. Originality/value This study uses new legislation which creates an exogenous shock to going concern reporting. Models and techniques are combined from prior literature and extended to investigate auditors’ reporting behaviors using two important and distinct samples.