BOM Software for Manufacturers
A bill of materials is the backbone of everything a factory does — costing, purchasing, planning, production. OEMup lets you build multi-level BOMs with sub-assemblies, phantom assemblies and alternate components, manage revisions cleanly, roll up material + process cost to the finished good, and answer “where is this part used?” instantly. Inside a cloud manufacturing ERP.
Why a BOM in Excel costs you money
The bill of materials looks like a list. It isn’t — it’s the structure every other number in the factory is built on. Quote a price, raise a purchase order, plan a week of production, cost a finished unit: all of it reads the BOM. The moment that structure lives in a spreadsheet, four problems start quietly draining margin:
Multi-level structures flattened
A spreadsheet squashes a finished good and its sub-assemblies into one long list, so the cost of each sub-assembly is invisible and you can’t see where the money actually sits.
OEMup: a true multi-level tree keeps every sub-assembly intact, with its own rolled-up cost visible at each level.Revisions overwrite history
The new BOM saves over the old one. When a customer asks what went into a unit built six months ago, there’s no record of the version that was actually used.
OEMup: every revision is a dated version — old work orders keep their version, so the build history stays intact.Costing is a stale manual roll-up
Someone hand-totals the BOM cost in a column. By the time a raw-material rate moves, the costed product is already wrong — and so is every quote built on it.
OEMup: material + process cost rolls up live, so a rate change flows to the finished-good cost automatically.No where-used, so changes mean hunting
A part’s price jumps or a supplier goes short. To find every product affected, someone opens BOM after BOM by hand — and still misses one.
OEMup: where-used lists every product that consumes the part instantly, at every level, so impact is one click.BOM management, done right
OEMup treats the BOM as a job with a clear lifecycle — build it once, version it as the product evolves, and let the rest of the factory read from it:
- Build the multi-level BOMModel the real product tree — finished good, sub-assemblies, sub-sub-assemblies, raw materials — with phantom assemblies for transient stages and alternate components per line for approved substitutes.
- Version it with revision controlEvery change becomes a dated revision. New orders pick up the latest version; in-flight and historical work orders keep the version they were built on, so costing and the audit trail stay clean.
- Roll up cost automaticallyMaterial cost rolls up through every level and process cost comes from the routing, giving a live costed finished good — planned cost you can compare against actuals booked in production.
- Drive MRP, purchasing and work ordersThe same BOM explodes into material requirements, drives MRP and purchase planning, and pre-populates work orders — no re-keying, no spreadsheet drift between teams.
- Run where-used and what-if analysisPick any component to see every product that uses it, and test a rate or substitution before committing — so a price change or shortage becomes an instant impact assessment.
What you get
One BOM, one source of truth — feeding purchasing, planning, production and costing inside the same manufacturing ERP software that runs the rest of your factory:
- Multi-level BOMs (unlimited depth)
- Sub-assemblies as their own tiers
- Phantom assemblies
- Alternate / substitute components
- Revision & version control
- Automatic cost roll-up (material + process)
- Scrap / yield factors per line
- Where-used inquiry on any component
- BOM compare across revisions
- Drives MRP & work orders
- Batch / unit scaling
- Cloud access on mobile, desk & shop floor
The BOM is the start of the production chain, not the end of it. See how it feeds MRP and material planning, where it sits in the broader picture of the best manufacturing ERP in India, or go deep on the product-feature spec on the multi-level BOM feature page.
BOM software — FAQ
What is BOM software?
BOM software (bill of materials software) is the system a manufacturer uses to define and maintain what goes into each product — the components, quantities, sub-assemblies and process steps — and keep that structure accurate as the product changes. Good BOM software handles multi-level structures, revisions, cost roll-up and where-used, and feeds the same BOM to purchasing, planning and production. OEMup builds all of this into a cloud manufacturing ERP.
What is a multi-level bill of materials?
A hierarchical product structure where a finished good is built from sub-assemblies, and each sub-assembly is itself built from raw materials or further sub-assemblies. It mirrors how the product is actually made, so cost rolls up level by level. A single-level BOM flattens everything into one list and hides the sub-assembly structure and its cost.
Does OEMup support phantom and alternate components?
Yes. Phantom assemblies are transient stages exploded through at MRP and work-order time without their own stock posting. Alternate (substitute) components are defined per BOM line so production can swap to an approved substitute when the primary part is short — without breaking the BOM or the cost roll-up. Both are standard in OEMup.
Can it roll up the cost of a finished product from the BOM?
Yes. Material cost rolls up through every level of the BOM and process (labour and overhead) cost comes from the routing, giving a costed finished good with no manual spreadsheet. Because the roll-up is live, a change in a raw-material rate or a sub-assembly flows up automatically, and planned cost can be compared against actuals booked in production.
What is where-used analysis?
The reverse of a BOM: instead of “what goes into this product?”, it answers “where is this component used?”. Pick any part and OEMup lists every BOM and finished good that consumes it, at every level — turning a price increase, quality hold or shortage into an instant impact assessment instead of opening every product BOM by hand.
Related: Multi-Level BOM Feature · MRP & Material Planning · Best Manufacturing ERP India
See your real BOM running on OEMup
Book a free 30-minute demo — bring one product (an Excel BOM is fine) and we’ll build it as a multi-level structure, roll up its cost, save a revision, and run a where-used inquiry live. Or leave your details and we’ll send pricing for your team size.