What Is Cost per Unit?
Cost per Unit is the total cost of producing one unit. It includes direct materials, direct labour, variable overhead, and allocated fixed overhead. It is the basis for pricing decisions, margin analysis, and quantifying the return on improvement projects.
The Formula
Cost per Unit = Total Production Costs ÷ Units Produced
Where Total Production Costs typically include:
- Direct materials
- Direct labour
- Variable overhead
- Allocated fixed overhead
Data Requirements
| Source | Required | What You Need |
|---|---|---|
| Machine Data | Yes | Production count |
| ERP | Yes | Material costs, labour rates, overhead allocation, cost accounting data |
Cost per Unit is a Phase 3 metric — it requires ERP integration for cost data alongside production counting.
Why It Matters
- Pricing decisions — cost-plus pricing needs an accurate cost base
- Margin analysis — profitability assessment per product
- Improvement ROI — quantifies savings from efficiency gains (e.g. reducing scrap, downtime, or labour)
- Make versus buy decisions — comparison to external options
Best Practices
- Calculate at the product level for accurate costing
- Track trends to identify cost escalation early
- Use to validate improvement initiatives — did the OEE improvement actually reduce cost per unit?
- Compare actual to standard cost for variance analysis
Related Metrics
- Downtime Cost — a component of total cost when reliability is poor
- Scrap Cost — material waste that inflates cost per unit
- Labour Cost per Unit — the labour component
- Energy Cost per Unit — the energy component