Bill of Materials Cost Calculator
Scrap compounds across components.
Bill of materials cost
$11.39
$9.59 of components
Scrap is applied by dividing rather than adding, because a 3% scrap rate means 3.1% more material is consumed per good unit. Across a multi-component assembly that gap compounds and is the usual reason material budgets run short.
How the Bill of Materials Cost Calculator works
Scrap applies to each component, and across a multi-component assembly those adjustments compound. Applying a single flat uplift to the finished item understates the material requirement in a way that only shows up when the line stops.
Also known as: BOM cost calculator · component cost rollup · materials list cost
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
What is a bill of materials?
A structured list of every component and quantity needed to make one unit, with costs attached. It is the foundation of any accurate product cost.
How does scrap affect a BOM?
Each component's required quantity rises by its own scrap factor. A component with 8% scrap needs 8.7% more material, and stacking several of those adds up.
Should the BOM include labour?
Component costs are materials; labour is usually held separately as assembly or conversion cost. Combining them makes it harder to see which is rising.
How often should a BOM be re-costed?
Whenever component prices move materially, and at least annually. A BOM costed at last year's prices flatters margin for as long as nobody checks.