Do Islamic banks use loan loss provisions to smooth their results?

Purpose The paper seeks to examine income smoothing practices in Islamic banks. It first focuses on detecting income smoothing practices. It then seeks to test whether loan loss provisions (LLPs) are used for earnings management purposes. Design/methodology/approach The paper explores income smoothing practices on a sample of 66 Islamic banks over the period 2001‐2006 using Beidleman's and Eckel's coefficients. Data are obtained from the Bankscope database. To test the use of LLPs to smooth Islamic banks results, a regression model was developed and tested. Findings The results provide evidence on an extensive use of income smoothing by Islamic banks. More than 75 per cent of the examined banks have a determination coefficient between 0.5 and 1 and 44 per cent have a variation coefficient less than 0.5. However, income smoothing is not achieved through LLPs. The variable earnings before taxes and provisions are not significant in all model specifications. The paper advances that these smoothed incomes are derived rather by the use of profit equalization reserve (PER) and investment risk reserve (IRR). The finding is contradictory to the widespread view stating that those mechanisms are designed to stabilize rewards attributed to investment account holders. Research limitations/implications The non‐disclosure of detailed information on PER and IRR prevented the empirical testing of the assertion on the use of these discretionary items to smooth Islamic banks' incomes. Originality/value Unlike previous studies which implicitly assume that Islamic banks intentionally use accounting techniques to disclose smoothed results, this paper pioneers the study on detecting income smoothing practice by such institutions. Second, it explores the use of LLPs for earnings management purposes in the context of a fast growing industry where Islamic assets have grown on average by 30 per cent per year over the period 2002‐2007. Third, it is the first paper to give some evidence on the use of PER and IRR as income smoothing devices. Finally, the paper covers a larger number of Islamic banks and from various countries.