Tax auditors should concentrate explicitly on higher auditor’s reputation (Brocheler et al., 2004) both audit efficiency (Apostolou et al., 1993) and audit effectiveness (Deshmukh et al., 1997). Therefore, auditors must improve audit judgment and quality in each audit engagement. Audit judgment is defined as a “practice conducted by individuals who must respond efficiently to cues in the auditee environment uncertainty and make decisions accordingly” (Power, 1995). Trotman (1999) identifies four basic purposes of judgment, decision-making in auditing, one of which is to evaluate auditor judgment. Solomon and Shields (1995) suggested that auditor should focuses on the criterion of consensus, consistency, and self-insight of audit judment