Abstract
Audit documentation has become a fundamental element of the audit process due to its role in supporting audit quality, ensuring compliance with professional standards, and providing sufficient evidence for audit conclusions. Audit documentation refers to the written and electronic records prepared and maintained by auditors that describe the audit procedures performed, evidence obtained, significant matters identified, professional judgments made, and conclusions reached during an audit engagement. High-quality audit documentation enhances audit planning, supervision, review, accountability, and consistency while providing evidence that the audit was conducted in accordance with International Standards on Auditing (ISA) and applicable regulatory requirements. In Nigeria, the growing demand for transparent financial reporting, increased regulatory oversight, corporate governance reforms, and heightened stakeholder expectations have intensified the need for high-quality audit practices. Regulatory institutions such as the Financial Reporting Council of Nigeria (FRCN), the Institute of Chartered Accountants of Nigeria (ICAN), the Association of National Accountants of Nigeria (ANAN), and other professional and regulatory bodies continue to strengthen auditing standards and quality assurance mechanisms to improve the credibility of financial reporting. Despite these initiatives, audit firms continue to face challenges such as inadequate documentation practices, time constraints, technological changes, insufficient staff training, inconsistent application of auditing standards, and increasing complexity of audit engagements, all of which may adversely affect audit quality. Although previous studies have examined audit procedures and audit effectiveness, empirical evidence regarding the effect of audit documentation on audit quality in Nigerian audit firms remains limited and inconclusive. Against this background, this study investigates the effect of audit documentation on audit quality in Nigerian audit firms. The study is anchored on Agency Theory, Audit Quality Theory, and Institutional Theory. Agency Theory posits that independent auditors serve as monitoring mechanisms that reduce information asymmetry between management and shareholders through the provision of credible audit opinions supported by adequate documentation. Audit Quality Theory explains that comprehensive and well-prepared audit documentation enhances the reliability, consistency, and credibility of audit engagements by providing sufficient and appropriate audit evidence to support auditors' professional judgments. Institutional Theory argues that regulatory requirements, professional standards, and organizational governance structures influence audit firms to maintain comprehensive documentation practices to ensure compliance and enhance legitimacy. Collectively, these theoretical perspectives provide a comprehensive framework for explaining the relationship between audit documentation and audit quality in Nigerian audit firms. The study adopts a quantitative research design using a structured questionnaire administered to audit partners, audit managers, senior auditors, audit supervisors, audit associates, quality assurance personnel, and other professionals working in selected audit firms in Nigeria. A stratified random sampling technique will be employed to ensure adequate representation of international audit firms, national audit firms, and medium-sized audit practices across Nigeria. Audit documentation will be measured using documentation completeness, adequacy of audit working papers, timeliness of documentation, compliance with International Standards on Auditing (ISA), documentation accuracy, electronic audit documentation systems, and documentation review procedures, while audit quality will be measured using audit evidence reliability, audit opinion credibility, compliance with auditing standards, professional judgment, audit effectiveness, client satisfaction, and overall audit performance. Primary data collected from respondents will be analyzed using descriptive statistics to summarize respondents' demographic characteristics and perceptions regarding audit documentation and audit quality. Structural Equation Modeling (SEM) will be employed to examine the effect of audit documentation on audit quality. The measurement model will be evaluated using Cronbach's Alpha, Composite Reliability (CR), Average Variance Extracted (AVE), and Confirmatory Factor Analysis (CFA) to establish the reliability and validity of the researc
