Automating Production Costing: The Ultimate ERP Frontier
Why do 80% of manufacturers fail at costing? System expert Nguyen Manh Tuong shares 20 years of 'trench' experience on the toughest business logic.
Over 20 years of deploying ERP systems, I have yet to see a company confidently claim they mastered costing on day one. If SCM is the blood and HRM is the muscle, then Costing is the central nervous system. When the nerves are frayed, the business is effectively ‘walking in the dark’ regarding its own profitability.
Why is Costing Always the Hardest Puzzle?
Most CEOs crave a single button to generate unit costs. However, in reality, data is often a mess. Inaccuracies stem from outdated BOMs, uncontrolled scrap rates, and indirect costs (electricity, depreciation) allocated by ‘gut feeling’ rather than logic.
“Inaccurate costing isn’t just a wrong number on a financial statement; it’s strategic suicide.”
Manual vs. True Automation
To give you a clear picture, here is a comparison based on my direct experience in mechanical and textile factories:
| Metric | Manual (Excel) | Automated (ERP) |
|---|---|---|
| Closing Time | 10-15 days post-month | Real-time or N+1 |
| Accuracy | Low, subjective | High, floor-data driven |
| Cost Allocation | Flat rate/Arbitrary | Activity-Based Costing (ABC) |
| Traceability | Nearly impossible | Down to Work Order (WO) level |
The 3 Pillars of Successful Costing Automation
- Data Discipline at Source: Do not expect the system to yield correct results if shop floor workers input wrong scrap quantities or fail to scan material barcodes. Optimization starts with human discipline, not code.
- BOM Integrity: In the Vietnamese market, theoretical BOMs often lag behind reality. A robust system must handle the variance between theoretical consumption and actual usage within the period.
- Smart Allocation Logic: Instead of spreading overheads thinly across all products, implement Standard Costing combined with machine-hour or labor-hour allocations. This is where IFRS or VAS must be harmonized with internal management needs.
Final Thoughts for Day 17
Automating production costing is not about buying expensive software. It is about standardizing your entire operational flow. If you don’t know where every cent goes on your production line, you are losing control of your company’s destiny.
Stop looking for magic. Start looking for data discipline.