# Costing Methods Used in the Service Sector
Different service industries adopt different costing methods based on whether services are customised, standardised, bundled, or multi-activity. A CA student must match industry to method and justify the choice.
## 1. Job Costing
When to use: Services are customised for individual clients or projects.
Industries: Software development, advertising agencies, consulting firms, healthcare.
- Costs accumulated and assigned to specific jobs/projects
- Enables per-project profitability analysis
- Aids in pricing decisions for bespoke work
## 2. Process Costing
When to use: Services are standardised and repetitive.
Industries: Utility companies (electricity, water), telecom providers, transport companies.
- Costs allocated to each stage of service delivery
- Computes average cost per unit of service
- Facilitates efficient resource allocation
## 3. Joint Products Costing
When to use: Bundled services where individual costs are inseparable.
Industries: Telecom companies offering combined internet + phone + TV.
- Costs allocated among bundled components
- Enables profitability analysis of each bundle element
## 4. Activity-Based Costing (ABC)
When to use: Multiple activities with different cost drivers.
Industries: Educational institutions, insurance companies, hospitals.
- Identifies key cost-driving activities
- Allocates overheads based on actual drivers, not volume
- Most accurate overhead allocation method
## 5. Standard Costing
When to use: Repetitive services with predictable costs.
- Sets predetermined cost norms
- Compares actual vs. standard → variance analysis
- Enables performance evaluation and cost control
## 6. Budgetary Control
When to use: All service sectors for financial planning.
- Budgets set for every cost element
- Deviations from budget trigger corrective action
- Ensures optimal resource utilisation to meet service objectives
## 7. Marginal Costing
When to use: Decisions on expanding or contracting service volumes.
- Analyses incremental cost of each additional unit of service
- Particularly relevant where variable costs significantly drive pricing
## Quick Reference
| Method | Best Suited For | Key Benefit |
|---|---|---|
| Job Costing | Customised services | Per-project profitability |
| Process Costing | Standardised/repetitive | Average unit cost |
| Joint Products | Bundled services | Component profitability |
| ABC | Multiple cost drivers | Accurate overhead allocation |
| Standard Costing | Repetitive, predictable | Variance analysis |
| Budgetary Control | All sectors | Financial planning and control |
| Marginal Costing | Volume decisions | Pricing and expansion decisions |