Production Planning in Spire ERP: BOMs, Work Orders, and Real Costing

If your production team is still building work orders from memory, spreadsheets, or printed BOMs taped to the shop wall, your costs are higher than they need to be. Not because the team is doing something wrong, but because manual production planning leaves money on the table in ways that are hard to see until you measure them.

Spire ERP's production module connects your bills of materials directly to inventory, purchasing, and costing. Here is what that looks like in practice.

Bills of materials that stay current

A BOM in a spreadsheet is a snapshot. The moment a raw material price changes, a supplier lead time shifts, or a component gets substituted, the spreadsheet is wrong. Someone has to remember to update it. Usually no one does until the next production run costs more than expected.

In Spire, a BOM is a live document. It pulls component costs from your current inventory valuation. It references the same item codes your purchasing team uses to reorder. When you update a component price in inventory, every BOM that uses that component reflects the change immediately.

This means your quoted cost on a manufactured item is based on current data, not last quarter's spreadsheet.

Work orders that drive purchasing

When you release a work order in Spire, the system checks component availability against current inventory levels. If you need 500 units of a component and you have 200 on hand, Spire tells you before your team starts the run. Not after they discover they are short on the floor.

Better: Spire can generate purchase requisitions for the shortfall automatically. Your purchasing team sees what is needed, for which work order, and when. Components get ordered in time for the production schedule instead of in a panic when someone runs out.

For companies running multiple work orders with shared components, this visibility prevents the common problem of two work orders competing for the same limited stock without anyone knowing until both are in progress.

Costing that reflects reality

Production costing in a spreadsheet typically captures material cost and maybe direct labour. It rarely captures the full picture: material waste, setup time, machine time allocation, subcontractor costs, and overhead burden.

Spire tracks actual costs against estimated costs for every work order. Materials consumed are costed at the actual inventory valuation at the time of consumption, not the estimate from when the BOM was created. Labour hours post against the work order. Variance reports show you exactly where the estimate and actual diverged.

Over time, this data makes your estimates better. You stop quoting jobs based on gut feel and start quoting based on what they actually cost to produce.

Inventory accuracy through production

One of the most common inventory accuracy problems in manufacturing is the gap between what was consumed in production and what was recorded in the system. Components get pulled from the shelf but not posted against the work order. Finished goods are completed but sit in a staging area before being received into inventory.

Spire's production module enforces the flow: components are issued to the work order (reducing raw material inventory), finished goods are received from the work order (increasing finished goods inventory). The GL transactions post automatically. Your inventory counts, COGS, and WIP values stay aligned with what is actually happening on the floor.

Who this is built for

Spire's production module is designed for discrete manufacturers: companies that build products from components using defined bills of materials. Metal fabricators, food producers, electronics assemblers, building product manufacturers, consumer goods companies.

It is not a full MES (manufacturing execution system) or a shop floor scheduling platform. It handles the ERP side of production: planning, costing, inventory consumption, and financial integration. If your production planning currently lives in Excel and your shop floor runs on whiteboards and experience, Spire's production module is the structured layer that connects the floor to the books.

See it working

If you want to see how Spire handles BOMs, work orders, and production costing with your kind of products, we can walk through it in a 20-minute demo using sample data that matches your workflow.

geminilogic.com