You are an expert Canadian CPA and bookkeeping specialist with deep expertise in ASPE Section 3031 (Inventories), IFRS standards, and CRA tax compliance. Create a comprehensive inventory costing implementation guide for a Canadian business with the following specifications:

**Business Profile:**
- Industry/Type: [BUSINESS_TYPE]
- Selected Costing Method: [INVENTORY_METHOD] (FIFO, Weighted Average, Specific Identification, or Standard Costing)
- Accounting Framework: [ACCOUNTING_STANDARD] (ASPE or IFRS)
- Current Accounting Software: [SOFTWARE_PLATFORM]
- Inventory Complexity: [COMPLEXITY_LEVEL] (Simple <100 SKUs, Moderate 100-1000 SKUs, Complex 1000+ SKUs or manufacturing)
- Fiscal Year-End: [FISCAL_YEAR_END]
- Special Considerations: [SPECIAL_CONTEXT] (e.g., cross-border inventory, drop-shipping, perishables, precious metals)

**Required Guide Sections:**

1. **Regulatory Compliance Framework**
   - Specific ASPE or IFRS citation requirements for inventory valuation
   - CRA Income Tax Act sections relevant to inventory (Regulation 1801, 1802)
   - GST/HST implications on inventory purchases and sales
   - Documentation standards for CRA audit defense (IT-473R compliance)

2. **Methodology Implementation**
   - Step-by-step calculation methodology for [INVENTORY_METHOD] with Canadian CAD examples
   - Permitted vs. prohibited practices under Canadian standards
   - Comparison with alternative methods and justification for selected approach
   - Transition procedures if converting from another method (Form T1174 considerations)

3. **Chart of Accounts & Software Setup**
   - Specific GL account codes for inventory, COGS, and adjustments
   - [SOFTWARE_PLATFORM] configuration settings (item tracking, valuation methods, locations)
   - Integration with sales channels and inventory management systems
   - Foreign exchange handling if importing inventory (CRA functional currency rules)

4. **Monthly Workflow & Internal Controls**
   - Cutoff procedures for month-end inventory counting
   - Reconciliation process between physical counts and GL balances
   - Approval hierarchies for inventory adjustments
   - Segregation of duties recommendations

5. **Lower of Cost or Net Realizable Value (LCNRV)**
   - ASPE Section 3031 NRV calculation methodology
   - Write-down procedures and reversal limitations
   - Documentation requirements for obsolete/slow-moving inventory
   - Journal entry templates for write-downs and subsequent recoveries

6. **Tax Optimization Strategies**
   - Timing considerations for year-end inventory purchases
   - Capital vs. inventory treatment for high-value items (CRA guidelines)
   - Uniform capitalization rules (UNICAP) if applicable
   - Impact on small business deduction and passive income limits

7. **Common Canadian Compliance Pitfalls**
   - Personal use of inventory (shareholder benefits)
   - Intercompany inventory transfers and transfer pricing
   - Consignment vs. sale confusion
   - Incorrect HST treatment on inventory disposals

8. **Audit-Ready Documentation Package**
   - Required supporting schedules (Schedule 100, 125 alignment)
   - Inventory count sheets and variance analysis templates
   - Cost flow assumption documentation
   - Third-party valuation reports (if applicable)

9. **Year-End Close Checklist**
   - Pre-year-end physical count procedures
   - Cutoff testing for goods in transit (FOB shipping point vs. destination)
   - Reserve calculations for shrinkage, obsolescence, and warranties
   - Reconciliation to T2 Corporate Income Tax Return schedules

**Tone:** Professional, technical but accessible, emphasizing CRA compliance and audit readiness.
**Format:** Use clear headings, bullet points for actionable steps, and include sample journal entries with CAD amounts.