Manufacturing Cost Accounting & Finance worked example

Cost Rollup Effort at 69% manual review share: a worked example

Push manual review share up to 69% and the picture changes. This example computes every intermediate figure at that operating point. Use it to budget the effort of a periodic cost rollup and target levels for automation.

The inputs for this scenario

  • BOM levels rolled: 40 levels (unchanged)
  • Cost per level processed: 180 $ / level (unchanged)
  • Manual review share: 69 % (raised for this scenario; the documented default is 60)
  • System and audit overhead: 1,500 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Rollup effort = BOM levels x cost per level x manual review share% + system overhead) to the inputs above produces each figure below.
  • At this operating point the engine returns 6,468 $ for total cost rollup effort cost, the number this scenario is built around.
  • At this operating point the engine returns 162 $ / piece for cost rollup effort cost per unit.
  • At this operating point the engine returns 4,968 $ for variable cost rollup effort cost.
  • At this operating point the engine returns 1,500 $ for fixed cost rollup effort adder.

How this compares with the baseline

  • Against the tool's baseline example, where manual review share sits at 60% and the headline result is 5,820 $, this scenario comes in 11.13% above the baseline at 6,468 $.
  • It computes the total effort cost of a cost rollup from the number of BOM levels, the cost to process each level, the manual review share, and fixed system and audit overhead. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Total cost rollup effort cost: 6,468 $ (headline result)
  • Cost rollup effort cost per unit: 162 $ / piece
  • Variable cost rollup effort cost: 4,968 $
  • Fixed cost rollup effort adder: 1,500 $

Run it with your numbers

  • Every input above is editable in the live Cost Rollup Effort calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.