1. Introduction and Objectives
In many continuous processing industries, a single raw material input yields multiple distinct products simultaneously. This point of separation is known as the Split-Off Point. Costs incurred before this point are shared Joint Costs. This lesson reviews the primary methods used to allocate these joint costs to individual outputs for inventory valuation.
                    ┌────────────────────────┐
                    │  Joint Processing Cost │ (Refining Crude Oil)
                    └───────────┬────────────┘
                                │
                                ▼
                       [ SPLIT-OFF POINT ]
           ┌────────────────────┴────────────────────┐
           ▼                                         ▼
   Product A (Gasoline)                      Product B (Diesel)

2. Joint Cost Allocation Methods
  • Physical Measure Method: Allocates joint costs based on a physical metric (e.g., weight, volume, or gallons) at the split-off point.
    • Limitation: Ignores the relative market value of the products, which can result in low-value high-volume products appearing highly unprofitable.

  • Sales Value at Split-Off Method: Allocates joint costs based on the relative market value of each product at the exact moment of separation.
    • Limitation: Requires that all products have an active, identifiable market price at the split-off point.

  • Net Realizable Value (NRV) Method: Used when products require further processing after the split-off point before they can be sold. NRV calculates an implied value at the split-off point:

    NRV = Final Estimated Sales Revenue − Separable Further Processing Expenditures
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