IAS 2ConditionalManufacturing

Standard costing and variance treatment

IAS 2 · Inventories

Applies to: All business models

Why it matters

Standard costing is only acceptable as a practical expedient if results approximate actual cost; stale standards that no longer reflect current input prices (imported resin, wheat, steel) let material variances silently accumulate, misstating both inventory and cost of sales and distorting gross margin trend analysis relied on by management, lenders and investors. Because import-price volatility and currency effects are a persistent feature of GCC/MENA manufacturing supply chains, undisciplined variance treatment (e.g. dumping everything to cost of sales, or parking variances in suspense) is a frequent source of audit adjustments and can mask genuine operating cost trends from management, delaying pricing and procurement decisions.

Diagnostic questions

When were standard costs last reviewed against actual input prices, and is that frequency adequate for volatile imports (resin, wheat, steel)? Are material price/usage and labor/overhead variances individually and in aggregate assessed for materiality before being left in cost of sales? Is the basis for allocating a material variance between inventory and cost of sales documented and applied consistently?

Recognition

  1. Confirm standard costs are set and regularly reviewed (at least annually, more frequently for volatile inputs) so that standards reasonably approximate actual costs achieved under normal operating conditions - standard costing is only a practical expedient for measuring cost, not a policy in its own right.
  2. At each period end, compute total variances (material price/usage, labor rate/efficiency, overhead spending/volume) between standard cost charged to production and actual cost incurred.
  3. Assess whether variances are individually and in aggregate immaterial: if so, it is acceptable to leave them in cost of sales for practical purposes.
  4. If variances are material, allocate them between inventory (raw materials, WIP, finished goods still on hand) and cost of sales in proportion to where the standard-costed items now reside, so ending inventory approximates actual cost.
  5. Identify any portion of a variance that represents abnormal, non-recurring inefficiency (e.g. an isolated machine breakdown) versus a genuine shift in the normal cost structure (e.g. a step-change in imported input prices); expense abnormal/non-recurring variances immediately rather than allocating them to inventory.
  6. Treat favorable and unfavorable variances consistently using the same allocation logic - do not selectively allocate only unfavorable variances to cost of sales while capitalizing favorable ones, or vice versa.
  7. Update the standards themselves (not just allocate the variance) once it is clear the old standard no longer reflects normal current costs, so future variances stay small and allocation stays a rounding exercise rather than a correction of stale data.

Measurement

Measurement basis: standard costs are used as an approximation of actual cost for practical convenience; they must be regularly reviewed - at least annually, and more frequently for volatile inputs like imported resin, wheat or steel - so results approximate actual cost achieved. What's included: standards should be set for direct materials, direct labor and overhead, based on normal, efficient operating conditions (not idealized or worst-case levels). Subsequent measurement/re-measurement trigger: at each period end, actual results are compared to standard and variances computed; if standards are found to significantly diverge from actual costs (a structural shift, not a one-off blip), the standards themselves must be revised prospectively, and the resulting variance is allocated between inventory and cost of sales if material, or left in cost of sales if immaterial. Ending inventory should approximate actual cost after variance allocation - it cannot be reported purely at a known-to-be-stale standard cost when the difference is material.

Presentation & disclosure

Disclose: that standard costing is used as a practical measurement technique and that standards approximate actual cost (with basis/frequency of review); the costing basis and the policy for allocating material variances between inventory and cost of sales; the amount of inventories carried at (standard) cost adjusted for variances, and total inventory expensed as cost of sales in the period; any material abnormal variance expensed separately and the reason for it; significant changes to standards made during or after the period and their effect on reported figures.

Common mistakes

  • Leaving all variances in cost of sales as a matter of policy even when standards are years out of date and variances are material, systematically misstating inventory
  • parking unexplained price or efficiency variances in a suspense/clearing account instead of investigating and allocating them each period
  • allocating only unfavorable variances to cost of sales (to protect inventory value) while capitalizing favorable variances into inventory, an inconsistent and indefensible practice
  • failing to distinguish abnormal, non-recurring variances (which should be expensed in full) from normal recurring variances (which should be allocated)
  • not updating standards after a known structural cost shift (e.g. permanent import price increase, new labor agreement), so the same material variance recurs every period without correction.

Simple example

A plastics factory in Jeddah set its resin standard cost at SAR 5.00/kg. An unexpected 20% import price rise lifts the actual purchase price to SAR 6.00/kg. During the month it purchases and uses 500,000 kg of resin, so the unfavorable material price variance = 500,000 kg x (SAR 6.00 - 5.00) = SAR 500,000. Of the resin-equivalent cost in inventory at month end, 20% remains in closing inventory (raw materials/WIP/finished goods) and 80% has flowed through to cost of sales, based on unit tracing. The variance is material and is judged to reflect a genuine, lasting shift in input prices (not an abnormal one-off), so it is allocated proportionately rather than expensed in full. Journal entries: (1) Recording actual purchases at standard cost with the price variance isolated at point of purchase: Dr Raw Materials Inventory (at standard) 2,500,000 / Dr Material Price Variance (unfavorable) 500,000 / Cr Accounts Payable (at actual cost) 3,000,000. (2) Allocating the unfavorable price variance between closing inventory and cost of sales (20%/80%): Dr Raw Materials/WIP/Finished Goods Inventory 100,000 / Dr Cost of Sales 400,000 / Cr Material Price Variance 500,000. Standards are then revised to SAR 6.00/kg (or a blended forecast rate) prospectively for the next period, so future variances stay small.

Professional judgment

Materiality assessment of variances is the first major judgment: it should be based on both the absolute size of the variance and its effect on inventory valuation and gross margin, not a fixed arbitrary percentage applied blindly across all product lines. The allocation basis (units produced, standard cost content, or another driver) used to split a material variance between inventory and cost of sales is itself a judgment, and should approximate where the originally-standard-costed items now sit; simplistic allocations (e.g. 100% to cost of sales regardless of inventory levels) understate inventory when significant stock remains on hand. Determining whether a variance is 'abnormal' (expensed in full, similar to abnormal waste under the general costing principles) versus a normal recurring variance requires judgment about the root cause - a genuine one-off event (fire, isolated breakdown) supports full expensing, whereas a market-wide price movement affecting all purchases supports proportional allocation. Judgment is also needed on how often to refresh standards; refreshing too rarely in volatile input markets (imported resin, wheat, steel, energy) causes persistently large variances that make the standard cost system lose its usefulness as a control tool, while refreshing too frequently can undermine its use as a stable benchmark for performance evaluation.

Source basis

IAS 2 · Inventories

Paragraph references

IAS 2.21–22IAS 2.13IAS 2.16

Verified against the official standard texts used in the IFRS Expert skill.

IAS 2 Inventories
Issued: December 2003 (revised) · Effective: 1 January 2005

Related issues

Educational and navigation content only. Not professional advice. Does not reproduce official IFRS/IAS text. Consult the authoritative standards and qualified professionals; professional judgment may still be required.