The Cost Breakdown: decomposing a price into 7 items
Objective: Understand the cost structure of a manufactured product and know how to break a supplier price into its components to identify negotiation levers.
The Cost Breakdown is the technique of opening up the supplier's price to understand what is inside. It is the difference between negotiating blind and negotiating with facts.
The 7 cost items of a manufactured product
| Cost item | Typical % | Content | Procurement lever |
|---|---|---|---|
| 1. Raw materials | 30-50% | Steel, plastics, components, chemicals | Indexation on indices, pooled purchasing, substitution |
| 2. Direct labour | 15-30% | Operators, assembly, inspection | Automation, productivity, location |
| 3. Machine costs | 8-15% | Depreciation, energy, maintenance | Cycle-time optimisation, capacity utilisation |
| 4. Overheads | 8-15% | Premises, administration, management, insurance | Benchmarking, questioning the allocation to the product |
| 5. Quality and R&D | 3-10% | Quality control, laboratory, development | R&D sharing, amortisation over volumes |
| 6. Logistics | 2-8% | Packaging, transport, storage, customs | Incoterms, consolidation, flow optimisation |
| 7. Supplier margin | 3-12% | EBIT, net profit | Sector benchmarking, volume negotiation |
🏢 Example: Machined mechanical part (unit price EUR 45)
| Item | Amount | % |
|---|---|---|
| Raw material (316L stainless steel) | EUR 15.75 | 35% |
| Direct labour (machining + inspection) | EUR 9.00 | 20% |
| Machine costs (CNC + surface treatment) | EUR 5.85 | 13% |
| Overheads | EUR 4.50 | 10% |
| Quality and R&D | EUR 2.70 | 6% |
| Logistics | EUR 2.70 | 6% |
| Margin | EUR 4.50 | 10% |
| Total | EUR 45.00 | 100% |
How to get the supplier's Cost Breakdown
- Direct request (open-book): In strategic relationships, ask the supplier to share their cost structure. Works with partner suppliers.
- Imposed template: Provide a breakdown template in the specification or RFQ. The supplier must fill it in to be considered.
- Internal estimate: Rebuild the cost structure from market data, technical expertise and benchmarks. That is the should-cost.
⚠️ Warning: Many suppliers refuse or manipulate their Cost Breakdowns. Margins can be hidden in overheads or material costs. That is why the should-cost (an independent estimate) is essential to check consistency.
💡 Key takeaway: The Cost Breakdown decomposes a price into 7 main items. Raw materials (30-50%) and labour (15-30%) together account for 45 to 80% of the cost. That is where the most important negotiation levers are concentrated. A buyer who negotiates without a Cost Breakdown negotiates blind.