Joint Cost & By-Product – US CMA Part 1 Rules

 Joint Cost & By-Product – US CMA Part 1 Rules

*1. If value of by-product is material, is it always considered for joint cost allocation?*

*Short Answer: No. Materiality does NOT make a by-product a joint product.*  

*Explanation:*  

ICMA defines the split based on _relative sales value at split-off_, not materiality alone.

Type Criteria Joint Cost Allocation?

**Joint Products** 2+ products with significant relative sales value. Each is a main product. **Yes** – allocate joint costs using Sales Value, NRV, or Constant GP method

**By-Product** Incidental product with *minor* sales value relative to main product(s). Not primary reason for production. **No** – by-product does NOT get joint cost allocated.

*So what if by-product value is “material”?*  

If the “by-product” starts having significant value, then technically it’s no longer a by-product – it becomes a *joint product*. But the exam will _tell you_ how to classify it.  

*CMA Exam Rule*:  

If the question calls it a “by-product”, treat it as a by-product even if the dollar amount looks big. Only allocate joint costs if the question explicitly says “joint products” or gives 2+ main products.  

*Accounting for Material By-Product*:  

Still use the by-product methods below. “Material” just means you’ll disclose it separately, but you don’t suddenly allocate joint cost.

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*2. If it’s mentioned that by-product is inventoried, should that always be deducted from joint cost before allocation?*

*Short Answer: Yes – if using the “NRV method” for by-products. This is the CMA preferred treatment.*

*Two By-Product Methods CMA Tests:*

*Method 1: NRV Method – Default for CMA*  

Used when by-product is inventoried OR when question is silent.

*Steps:*

1. Calc NRV of by-product = Sales Value – Separate costs to complete/sell  

2. *Deduct by-product NRV from total joint costs*  

3. Allocate the _reduced_ joint cost to main products only  

*Journal when by-product is produced:*  

Dr By-Product Inventory --- NRV  

Cr Joint Process / Work-in-Process --- NRV  

This reduces the cost of the main product. Main product cost per unit goes down.

*Method 2: Other Income Method*  

Used when by-product is NOT inventoried OR question says “recognize when sold”.  

*Steps:*  

1. Do NOT deduct anything from joint cost. Main products get full joint cost.  

2. When by-product sells: Cr Other Income or Cr COGS  

*Exam Trap*: If they say “by-product is inventoried” or “by-product has NRV of $X”, you must deduct it from joint cost first. If you don’t, your main product cost will be overstated = wrong MCQ.

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*Quick Decision Tree for Exam*

1. *Does question call it “joint product” or “by-product”?*  

   - Joint product → Allocate joint cost  

   - By-product → Do NOT allocate joint cost

2. *If by-product, is it inventoried?*  

   - Yes or silent → Use NRV method: Deduct NRV from joint cost before allocation  

   - No / “expensed when sold” → Other Income method: No deduction, record income on sale

3. *Does materiality matter?*  

   - No. Classification drives treatment. If CMA wants you to reclassify, they will say “due to increased value, now considered joint product”.

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*Example CMA-Style*

Joint cost = $100,000.  

Main Product A sales value = $200,000.  

By-product B: 10,000 units, can sell $3/unit after $5,000 separate processing. By-product is inventoried.

*Solution:*  

By-product NRV = (10,000 × $3) – $5,000 = $25,000  

Joint cost to allocate = $100,000 – $25,000 = $75,000 → all to Product A.  

If by-product was NOT inventoried: Allocate $100,000 to Product A. When B sells, record $25,000 Other Income.

*Key takeaway*: “Inventoried” = deduct. “Not inventoried” = don’t deduct. Materiality ≠ joint product.