Joint production needs an allocation basis, not an arbitrary margin target
Ind AS 2 paragraph 14 requires shared conversion costs of simultaneously produced products, when not separately identifiable, to be allocated on a rational and consistent basis. Relative sales values at separation or production completion are examples. For an immaterial by-product, its net realisable value is often deducted from main-product cost. Neither approach permits management to capitalise abnormal waste or conceal a product-specific NRV shortfall.
Identify joint costs and separately traceable costs
The ICAI compendium text of Ind AS 2, particularly paragraphs 9 and 12–16 supplies the framework, checked on 26 October 2026. Separate costs directly traceable to one product from the shared pool. Establish when products become separately identifiable and what production stage the proposed value basis represents. A joint process is not the same issue as simply choosing FIFO or weighted-average for interchangeable purchased units.
Document the products, output quantities, traceable costs, shared conversion pool and source of sales-value data. Apply a rational basis consistently; changing the basis merely to move profit between products is not supported by paragraph 14. If facts change, analyse the appropriate accounting treatment and evidence rather than silently changing the spreadsheet weights.
Relative sales values are an example, not a universal compulsory method
Paragraph 14 allows a rational and consistent allocation and gives relative sales values as an example, at the point of separation or at completion. Use values appropriate to the chosen basis and avoid comparing one product at separation with another after significant further processing without a supported rationale. If further costs are separately traceable, preserve them as such and add the qualifying amount to the relevant product after allocation, without counting it in the shared pool a second time.
Apply the by-product shortcut only to its stated circumstances
The standard notes that most by-products are immaterial and, where that is the case, they are often measured at NRV with that value deducted from main-product cost. Do not assume that the word by-product automatically establishes immateriality. Record the quantitative and qualitative assessment for the actual business. The examples expressly stipulate immateriality; they create no fixed percentage threshold.
NRV is not necessarily gross selling proceeds. It reflects the estimated selling price less estimated completion and selling costs relevant to the assessment. A deduction of gross by-product selling value where further costs are needed would overstate the credit against main-product cost. Keep the by-product inventory and main-product reduction reconciled so the same value is not credited twice.
Exclude abnormal production costs before allocating
Paragraph 16 excludes abnormal wasted materials, labour and other production costs from inventory cost. A rational allocation ratio does not make an ineligible cost eligible. Identify the abnormal amount first and expense it as required, then allocate the qualifying shared pool. Normal-capacity overhead allocation under paragraph 13 also needs a separate supported working where relevant; the examples stipulate that issue is already correctly resolved.
The closing NRV test remains
After cost allocation, apply the standard’s lower-of-cost-and-NRV measurement to the appropriate inventory population. High expected margin on one joint product does not automatically eliminate another product’s write-down. Retain the product-level quantity, cost, expected selling value and completion/selling-cost evidence. The illustrations use straightforward separately assessed products and omit tax, interest, currency effects and unmentioned process movements.
A good closing file reconciles the production cost ledger to the allocated product costs, by-product deductions, separately traced costs, abnormal-cost expense, sold/unsold quantities and closing valuation. Agreement of the total cost pool is necessary, but does not prove the allocation basis or NRV evidence is sound.
Six worked illustrations
All facts and amounts below are fictional. Assumptions describe the model, not additional statutory rules.
Illustrative example 1: Relative sales-value allocation
Eligible shared conversion costs are ₹6,00,000. Product A’s relevant sales value is ₹8,00,000 and B’s ₹4,00,000. The 2:1 ratio allocates ₹4,00,000 to A and ₹2,00,000 to B, totalling ₹6,00,000.
Illustrative example 2: Add traceable post-separation costs once
Use the same ₹4,00,000/₹2,00,000 shared allocations, with qualifying separately identifiable further costs of ₹50,000 for A and ₹80,000 for B. Product costs become ₹4,50,000 and ₹2,80,000, total ₹7,30,000. The ₹1,30,000 further costs must not also remain inside the shared ₹6,00,000 pool.
Illustrative example 3: Immaterial by-product at stipulated NRV
A qualifying main-product cost pool is ₹5,00,000 and an expressly assessed immaterial by-product has ₹5,000 NRV. Under the stated paragraph 14 approach, main-product cost is ₹4,95,000 and the by-product amount ₹5,000. Together they reconcile to ₹5,00,000; this is not a new ₹5,000 profit created by the allocation.
Illustrative example 4: Gross proceeds are not the NRV deduction
An immaterial by-product’s expected sale proceeds are ₹7,000, completion cost ₹1,000 and selling cost ₹500. NRV is ₹5,500. From a ₹5,00,000 qualifying pool, the main-product cost is ₹4,94,500, not ₹4,93,000 obtained by incorrectly deducting gross proceeds.
Illustrative example 5: Remove abnormal waste first
A recorded conversion pool of ₹6,60,000 includes ₹60,000 correctly identified abnormal waste expense. Qualifying cost is ₹6,00,000. On the stipulated 2:1 basis, allocate ₹4,00,000 and ₹2,00,000; the ₹60,000 remains expense, not additional inventory allocated ₹40,000/₹20,000.
Illustrative example 6: Closing cost versus NRV
A’s unsold share is 25% of its stipulated ₹4,00,000 allocated cost, or ₹1,00,000; its closing NRV is ₹90,000, requiring a ₹10,000 write-down. B’s unsold share is 50% of ₹2,00,000, also ₹1,00,000; its NRV is ₹1,20,000, so it remains at ₹1,00,000. Combined closing inventory is ₹1,90,000, not ₹2,00,000.
Ten-step verification table
| Step | Action | Evidence |
|---|---|---|
| 1 | Identify process and products | Joint output, separation point and quantity records. |
| 2 | Separate traceable costs | Product-specific costs excluded from the shared allocation pool. |
| 3 | Validate eligible shared costs | Conversion cost and normal-capacity support. |
| 4 | Exclude abnormal amounts | Evidence and separate expense entries. |
| 5 | Select a rational basis | Consistent allocation rationale and value-stage alignment. |
| 6 | Support sales-value inputs | Comparable stage and reliable current evidence. |
| 7 | Assess by-product materiality | Actual quantitative/qualitative conclusion. |
| 8 | Calculate by-product NRV | Completion and selling costs, with no double credit. |
| 9 | Apply closing inventory measurement | Unsold quantities, allocated cost and appropriate NRV test. |
| 10 | Reconcile the reporting file | Production ledger, product costs, expenses and closing valuation. |
Sixteen practitioner FAQs
1. When is a shared allocation needed?
Where conversion costs of jointly produced products are not separately identifiable, paragraph 14 requires a rational and consistent allocation.
2. Is relative sales value the only permitted basis?
No. It is an example in the standard; the chosen basis must be rational and consistent.
3. Can values be taken at the separation stage?
Paragraph 14 gives that stage, or completion of production, as examples for relative sales values.
4. Can one product’s value stage differ without explanation?
Avoid unsupported mixed stages; document why the data and basis are appropriate.
5. Should separately traceable further costs be pooled again?
No. Preserve product-specific qualifying costs and avoid double counting them in the joint pool.
6. Is every by-product automatically immaterial?
No. Materiality must be assessed on the actual facts, not inferred from the label.
7. Do the illustrations establish a materiality percentage?
No. They expressly assume the assessment has been made.
8. How does the immaterial by-product approach affect main-product cost?
The stipulated by-product NRV is deducted from main-product cost under the paragraph 14 approach described.
9. Is NRV always gross sale proceeds?
No. Relevant completion and selling costs must be considered in the NRV calculation.
10. Can the by-product amount be credited twice?
No. Reconcile its recognised amount and main-product deduction without a second unsupported gain.
11. Does allocation make abnormal waste capitalisable?
No. Paragraph 16 excludes abnormal production costs from inventory.
12. Does a good ratio resolve idle-capacity overheads?
No. The normal-capacity allocation under paragraph 13 requires its own correct working.
13. Does cost allocation replace the lower-of-cost-and-NRV test?
No. Closing measurement remains necessary after establishing cost.
14. Can B’s expected margin automatically cover A’s write-down?
Not under the separately assessed product facts in the example; apply the standard’s appropriate inventory assessment.
15. Does this article choose a tax inventory valuation method?
No. It addresses Ind AS accounting; tax treatment requires a separate applicable-law analysis.
16. What should the reviewer reproduce?
The eligible pool, basis, source values, traced further costs, by-product treatment, exclusions, unsold quantities and final NRV comparison.
Conclusion
Use a rational and consistent allocation where joint conversion costs are not separately identifiable. The immaterial by-product NRV approach does not remove abnormal-cost exclusions or the final lower-of-cost-and-NRV test.