ISA 220 (Revised) Quality Management for an Audit of Financial Statements sets out the auditor’s responsibilities for quality management at the engagement level. Documentary evidence indicating adherence to ISA 220 includes:

1. Engagement Partner’s Involvement:
   • Signed engagement letters or planning documents showing the engagement partner’s review and approval of the audit plan.
   • Minutes of planning meetings attended by the engagement partner, documenting their direction and supervision.
2. Risk Assessment and Responses:
   • Completed risk assessment checklists or working papers identifying engagement-specific quality risks and responses.
   • Documentation of discussions with the engagement team on fraud risks and significant audit risks, initialed by the engagement partner.
3. Ethical Compliance:
   • Signed independence declarations or conflict-of-interest forms by the engagement team, confirming compliance with ethical requirements.
   • Records of consultations on ethical issues, such as potential threats to independence, with resolutions documented.
4. Assignment of Resources:
   • Audit team allocation schedules showing the assignment of staff with appropriate competence and experience.
   • Training records or CPD logs for engagement team members, evidencing relevant skills for the audit.
5. Direction, Supervision, and Review:
   • Review notes or checklists initialed by senior team members, evidencing supervision of junior staff work.
   • Hot review working papers with reviewer comments and dates, showing timely review during the audit.
6. Consultation on Complex Matters:
   • Consultation logs or memos documenting discussions with technical experts on contentious or complex audit matters, including conclusions reached.
   • Evidence of consultation with the firm’s quality control department for high-risk areas.
7. Engagement Quality Review (if applicable):
   • Engagement quality review checklists or reports signed by the reviewer, confirming the review was performed for high-risk or listed entity audits.
   • Correspondence showing resolution of quality review findings before issuing the audit opinion.
8. Monitoring and Remediation:
   • Post-audit review findings or internal inspection reports for the engagement, with evidence of remedial actions taken.
   • Documentation of debrief meetings with the engagement team to discuss lessons learned and quality improvements.
9. Audit Documentation:
   • Completed audit files with timestamps showing assembly within 60 days of the auditor’s report, as required by ISA 230.
   • Working papers with clear cross-references to audit procedures, evidence obtained, and conclusions reached.
10. Communication with Those Charged with Governance:
    • Letters or meeting minutes documenting communication with the audit committee on quality management processes, significant findings, or independence matters.

These documents collectively demonstrate that the auditor has implemented a robust quality management process, ensuring the audit is performed in accordance with ISA 220 and professional standards.