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The Consequences of Discount Rate Selection for Defined Benefit Liabilities

Abstract This paper provides evidence on the use of discount rates for calculating defined benefit liabilities (DBL), and their impact on value relevance and audit fees for Australian listed companies between 2011 and 2016. We document that the average discount rate is 3.96% but the yearly range across companies is 4.03% (2.76% excluding multinationals with multiple plans), despite the fact that AASB 119 provides guidance to use the yield of high quality corporate bonds or, if there is not a deep market, government bonds. We then find that the DBL or unfunded component (DBL less the fair value of the plan’s assets) is value relevant, but is less so when a higher discount rate is used. Furthermore, we document that audit fees are higher when the DBL is larger, or the discount rate is higher, consistent with greater audit effort and risk. Overall, this paper contributes to the accounting literature by documenting both the discretion available in discount rate selection and its consequences.