The relations between audit fee and audit clients’ factors and KAM: evidence from Thailand

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Sompong Pornupatham
นันทกรณ์ ทองสืบแสง

Abstract

The purpose of this research is to study the relationship between audit fee and factors of the SET 100 index listed companies in the Stock Exchange of Thailand. The company factors refer to revenue, assets, leverage, operating cash flows, return on equity, and number of affiliates. Auditors-related factors are number of key audit matters (KAM) and non-audit services fee.  Total 399 samples were collected for 5 years between 2018 - 2022, excluding samples that have incomplete disclosures. The results illustrate that audit fee has negative association with revenue which auditors have to put more efforts in auditing when revenue is unexpected. While company size and number of affiliates have significant and positive relationship with audit fee. This result implies that auditors have to utilize more time and resources when auditing more assets and complex-structured companies. However, number of key audit matters (KAM) has positive association with audit fee, which auditors perform more works and responses when coping with many KAMs. The significant and positive coefficient of non-audit fee represents that auditors do not reduce audit fee to attract audit clients to engage non-audit service, which is evidence of auditor’s independence.

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