The list below is intentionally comprehensive and follows the actual audit timeline.
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Phase 1: Client Acceptance & Continuance
A. Client Acceptance File
1. Engagement acceptance checklist
2. Continuance assessment
3. Client profile sheet
4. Corporate structure chart
5. Ultimate beneficial ownership (UBO) details
6. Related party mapping
7. Integrity assessment of management
8. Independence declaration
9. Conflict of interest assessment
10. AML/KYC documentation
11. Risk assessment of client
12. Previous auditor communication
13. Professional clearance letter
14. Background search documentation
15. Sanctions screening
16. Litigation screening
17. Engagement risk rating
18. Engagement approval memo
19. Partner approval documentation
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Phase 2: Engagement Setup
B. Engagement Administration
20. Signed engagement letter
21. Audit strategy memorandum
22. Audit timetable
23. Staffing plan
24. Budgeted hours
25. Materiality determination
26. Performance materiality calculation
27. Trivial threshold determination
28. Audit team independence confirmation
29. Specialist involvement assessment
30. Component auditor assessment
C. Permanent File Update
31. Certificate of incorporation
32. Memorandum & Articles
33. RJSC filings
34. Trade license
35. TIN certificate
36. VAT registration
37. Bank facility agreements
38. Major contracts
39. Lease agreements
40. Insurance policies
41. Board structure details
42. Group structure
43. Prior years' audited FS
44. Accounting policy manual
45. ERP/System overview
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Phase 3: Understanding the Entity (ISA 315)
D. Entity Understanding
46. Industry analysis
47. Economic environment assessment
48. Regulatory environment assessment
49. Business model documentation
50. Revenue stream analysis
51. Operational process mapping
52. Key management personnel list
53. Organizational chart
54. Governance assessment
55. Fraud risk brainstorming memo
56. Going concern preliminary assessment
E. Process Documentation
57. Revenue cycle walkthrough
58. Procurement cycle walkthrough
59. Inventory cycle walkthrough
60. Payroll cycle walkthrough
61. Treasury cycle walkthrough
62. Fixed asset cycle walkthrough
63. Financial close cycle walkthrough
F. Internal Control Documentation
64. Risk Control Matrix (RCM)
65. Flowcharts
66. Narratives
67. Walkthrough testing
68. IT environment understanding
69. ITGC assessment
70. Segregation of duties analysis
71. Key controls identification
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Phase 4: Risk Assessment
G. Risk Assessment File
72. Significant risks memo
73. Fraud risks memo
74. Journal entry fraud assessment
75. Revenue recognition risk assessment
76. Management override assessment
77. Related party risk assessment
78. Going concern risk assessment
79. Compliance risk assessment
80. Preliminary analytical review
81. Risk universe document
82. Financial statement level risks
83. Assertion level risks
84. Risk-response linkage document
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Phase 5: Test of Controls
H. Control Testing
85. Control testing strategy
86. Sample size calculation
87. Control testing working papers
88. Control exceptions log
89. Deficiency evaluation memo
90. Compensating controls assessment
91. ITGC test results
92. Application control testing
93. User access review testing
94. Change management testing
95. Backup recovery testing
96. Control reliance conclusion
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Phase 6: Substantive Audit
Cash & Bank
97. Bank confirmation
98. Bank reconciliation testing
99. Cash count report
100. Cut-off testing
101. Foreign currency testing
Receivables
102. AR lead schedule
103. Debtor confirmation control sheet
104. Positive confirmations
105. Negative confirmations
106. Alternative procedures file
107. Subsequent receipt testing
108. ECL assessment
109. Aging analysis
Inventory
110. Inventory lead schedule
111. Inventory attendance memo
112. Inventory count sheets
113. Count test documentation
114. Inventory reconciliation
115. NRV testing
116. Obsolescence assessment
117. Inventory cut-off testing
Fixed Assets
118. FAR reconciliation
119. Additions testing
120. Disposal testing
121. Physical verification report
122. Depreciation recalculation
123. Impairment assessment
Investments
124. Investment schedule
125. Valuation testing
126. Market value verification
127. Fair value assessment
Revenue
128. Revenue lead schedule
129. Sales cut-off testing
130. Sales invoice testing
131. Contract review file
132. IFRS 15 assessment memo
133. Analytical review
134. Journal testing
Purchases & Expenses
135. Expense lead schedule
136. Vouching working papers
137. Accrual testing
138. Expense cut-off testing
139. Related party expense review
Payroll
140. Payroll reconciliation
141. Employee master verification
142. Payroll recomputation
143. Tax deduction testing
Borrowings
144. Loan confirmation
145. Interest recalculation
146. Covenant compliance review
Provisions
147. Legal confirmation
148. Provision assessment memo
149. IAS 37 review
Taxation
150. Current tax computation review
151. Deferred tax calculation
152. Tax assessment status
153. Tax provision review
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Phase 7: Completion Stage
I. Completion Procedures
154. Completion checklist
155. Subsequent event review
156. Going concern final assessment
157. Final analytical review
158. Misstatement summary
159. SAD schedule
160. Materiality reassessment
161. Disclosure checklist
162. IFRS compliance checklist
163. Companies Act compliance checklist
164. FRC compliance checklist
165. Related party disclosure review
166. Segment disclosure review
167. Going concern disclosure review
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Phase 8: Management Representations
J. Management Representation File
168. Draft representation letter
169. Signed representation letter
170. Fraud representation
171. Related party representation
172. Going concern representation
173. Litigation representation
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Phase 9: Reporting
K. Financial Statements Review
174. Draft FS
175. Final FS
176. Cross-reference review
177. Disclosure review notes
178. Financial statement tie-out
L. Audit Opinion File
179. Engagement quality review documents
180. EQCR clearance
181. Partner review notes
182. Resolution log
183. Final opinion memorandum
184. Key audit matters memo
185. Emphasis of matter memo
186. Audit report
187. Signed auditor report
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Phase 10: Governance Communication
M. TCWG Communication
188. Audit findings report
189. Internal control deficiencies report
190. Management letter
191. Audit committee presentation
192. Board presentation
193. TCWG communication letter
194. Significant deficiencies communication
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Phase 11: Archiving & Quality Control
N. Archiving File
195. File completion checklist
196. Archiving checklist
197. Final version control log
198. Locked file evidence
199. Retention schedule
200. Archive approval
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Additional Big-4 / FRC / ISQM Best-Practice Documents
201. Engagement Quality Risk Assessment
202. Root Cause Analysis (prior year findings)
203. Data Analytics Plan
204. Journal Entry Testing Universe
205. Fraud Interview Notes
206. Significant Estimate Challenge Memo
207. Professional Skepticism Documentation
208. Management Bias Assessment
209. ESG Reporting Consideration Memo
210. Cybersecurity Risk Assessment
211. Audit Evidence Sufficiency Memo
212. Contradictory Evidence Register
213. Consultation Memorandum
214. Hot Review Documentation
215. Cold Review Documentation
216. ISQM Monitoring Findings
217. Independence Monitoring File
218. Engagement Performance Review
219. Coaching Review Notes
220. Lessons Learned Memo
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ISA Mapping (Most Important)
Area Primary ISA
Acceptance ISA 220, ISQM 1
Planning ISA 300
Materiality ISA 320
Risk Assessment ISA 315
Fraud ISA 240
Responses to Risks ISA 330
Audit Evidence ISA 500
Confirmations ISA 505
Estimates ISA 540
Related Parties ISA 550
Subsequent Events ISA 560
Going Concern ISA 570
Written Representations ISA 580
Reporting ISA 700–706
Group Audit ISA 600
Quality Management ISQM 1 & ISQM 2
For a large Bangladeshi listed company audit, a fully documented Big-4-style file will often contain 300–600+ individual working papers, with the above list forming the core chronological audit trail expected by ISA, FRC Bangladesh inspections, and ICAB practice reviews.