Standard Cost
Is standard cost the same as actual cost?
No. Standard cost is a predetermined benchmark; actual cost is what was actually paid or consumed. The gap between them is recorded as a variance in cost accounting.
Can standard cost be used for purchased items and manufactured items?
Yes. Standard cost is maintained for purchase, assembly, and production replenishment methods, with different cost-element structures for each.
How does standard cost affect inventory valuation?
Inventory is carried at the standard amount, while deviations between actual and standard cost are handled through variance or revaluation logic depending on the ERP design.
Standard cost is a predetermined unit cost assigned to an item before actual production or purchase results are known. In manufacturing and inventory systems, it values receipts, issues, work-in-process, and finished goods at a stable book value, typically including material, labor, overhead, and subcontracting elements. Actual costs are compared against this benchmark to calculate purchase price and production variances.
On the shop floor, standard cost anchors every inventory movement at a fixed value, so a component received into raw stock is booked at the planned amount even if the supplier invoice is higher. Production completions, WIP transfers, scrap write-offs, and shipments all flow through the same baseline, letting planners focus on the variance rather than on fluctuating purchase prices. When material prices spike or a routing changes, the standard remains stable until an authorized update runs through a cost rollup or worksheet. In warehousing, this consistency protects bin valuation and internal transfers from market swings. The real control benefit appears at month-end: actual consumption and actual labor are compared with the standard, exposing yield loss, downtime, rush freight, and subcontractor overruns as variances. Procurement and production managers can then trace whether unfavorable results come from buying, efficiency, or overhead absorption, and adjust plans or standards accordingly.
Stale standards after material inflation: If resin, steel, packaging, or freight rates rise but the standard cost is not refreshed, inventory and margin reports distort. Large purchase price variances accumulate, making purchasing performance appear better or worse than reality.
Missing sourcing logic in ERP: When supply-chain cost rollup is enabled but a valid buy sourcing rule is absent, the calculated standard ignores the real supplier path, understating item cost and generating misleading purchase price variances.
Incomplete cost element build-up: Produced and assembled items require separate material, labor/capacity, subcontracting, and overhead elements. If any element is omitted, WIP and finished-goods value understates, causing persistent labor or overhead variances and incorrect BOM profitability analysis.