## SA 501: Audit Procedures for Inventories
Inventories often represent the largest single asset on the balance sheet. SA 501 prescribes specific procedures across four distinct scenarios.
---
### Case 1: Attendance at Physical Inventory Count (Standard Case)
(a) During the count:
- Evaluate management's instructions and procedures for recording and controlling count results
- Observe the performance of management's count procedures
- Inspect the inventory
- Perform test counts
(b) After the count:
- Perform audit procedures over the final inventory records to determine whether they accurately reflect actual count results.
#### Matters to Consider When Planning Attendance:
1. Nature of inventory
2. Stages of completion of work-in-progress
3. ROMM related to inventory
4. Nature of internal controls over inventory
5. Whether adequate procedures and instructions have been established
6. Timing of the physical count
7. Whether a perpetual inventory system is maintained
8. Locations where inventory is held (considering materiality and ROMM)
9. Whether an auditor's expert is needed
---
### Case 2: Count Conducted at a Date Other Than the FS Date
In addition to Case 1 procedures:
- Perform audit procedures to obtain evidence that changes in inventory between the count date and the FS date are properly recorded.
Key matters to consider:
1. Whether perpetual inventory records are properly adjusted
2. Reliability of the entity's perpetual inventory system
3. Reasons for significant differences between physical count and perpetual records
---
### Case 3: Attendance Is Impracticable
- Perform alternative audit procedures to obtain SAAE regarding existence and condition of inventory.
- Example: Inspect documentation of subsequent sale of inventory items acquired prior to the count — this provides evidence of existence and condition.
- If alternative procedures are also not possible → modify the audit report (SA 705).
---
### Case 4: Inventory Under Custody of a Third Party
Obtain SAAE by performing one or both of:
(a) Request confirmation from the third party as to quantities and condition of inventory.
(b) Perform inspection or other audit procedures, such as:
- Attending (or arranging another auditor to attend) the third party's physical count
- Obtaining a service auditor's report on the adequacy of third party's internal controls
- Inspecting documentation (e.g., warehouse receipts)
- Requesting confirmation from other parties when inventory is pledged as collateral