Fontes, Joana CardosoPanaretou, ArgyroShakespeare, Catherine2025-10-092025-10-092025-09-25Cardoso Fontes, J., Panaretou, A., & Shakespeare, C. (in press). The effect of IFRS 9 on comparability. Accounting and Business Research. https://doi.org/10.1080/00014788.2025.25334672159-42605688aacb-7191-4536-8cc8-bfa1204d759ehttp://hdl.handle.net/10400.14/55181This study examines the impact of IFRS 9 adoption on accounting comparability in the banking industry. Our findings indicate that overall the adoption of IFRS 9 is associated with a decrease in accounting comparability. The adoption of the expected credit loss model is identified as the primary driver of reduced comparability, while we provide some evidence that IFRS 9 classification and measurement framework and IFRS 9 hedge accounting rules are associated with an increase in comparability. Although we document a decline in comparability during our sample period, we do not draw conclusions on the long-term impact of the expected credit loss model on comparability or its effect on the informativeness of accounting numbers.engBanksComparabilityFinancial instrumentsIas 39Ifrs 9research article10.1080/00014788.2025.2533467105017978457001583472300001