Routing Costing

Within ERP/MRP systems, routing costing is the process of assigning labor, machine, setup, run, and overhead costs to the operations in a manufacturing routing. It converts the sequence of production steps, work-center times, and resource consumption into a standard or estimated manufactured cost, enabling cost rollup, WIP valuation, quoting, and variance analysis.

On the shop floor, routing costing links every production operation to a work center and then to a cost center with maintained activity rates. When an operator confirms setup time, machine run time, or labor hours, the ERP system multiplies that consumed time by the appropriate rate and updates WIP and production order costs. This same routing data feeds standard cost rollup alongside the BOM, so each finished unit carries the value-added labor, machine, and overhead content defined by the routing. In practice, a job routed through an alternative work center or with an engineered time standard that no longer matches actual conditions immediately changes cost absorption, standard-versus-actual variances, and inventory valuation. Costing logic also supports quoting, make-vs-buy analysis, and production order settlement. Accurate routing costing therefore depends on keeping work-center assignments, time standards, and cost-center activity prices synchronized with real shop-floor conditions.