Cost-to-Serve and P&L¶

Cost-to-Serve and P&L translate a physical Supply Plan into an economic view. The calculation does not create production or distribution decisions by itself; it interprets the plan's fulfilled sales, purchases, production, transfers, inventory, and loads using prices and costs.

The purpose is to support financially integrated planning: service and feasibility remain visible, while scenarios can also be compared by contribution and EBITDA impact.

Three complementary views¶

1. Cost-incidence view¶

This view shows where each economic fact originates. Revenue, raw material, production, inbound logistics, storage, outbound logistics, first-tier freight, second-tier freight, taxes, inventory, and other configured costs remain attributable to their point of incidence.

Use it to investigate why a scenario changed, reconcile cost records, and avoid treating Cost-to-Serve as a single unexplained total.

2. Customer view¶

Costs are propagated through the operating network to the sale. The result can compare gross and net revenue with the complete path required to serve a customer: raw materials, production, transfers, inbound and outbound logistics, storage, tier-one and tier-two freight, taxes, and other facts.

This view gives visibility to contribution or EBITDA at customer, channel, product, or region level. A high-revenue customer can have a weak result if service requires expensive production, small loads, long transfers, or high handling effort.

3. Internal-unit view¶

The same facts can be read from the perspective of a plant, distribution center, or other internal location. This view answers whether an operating unit creates or absorbs result after considering the flows and activities for which it is responsible.

The customer and internal-unit views are not competitors. They are different allocations of the same traceable facts and should reconcile at the agreed total.

How cost propagation works¶

An economic fact starts at its functional source and follows the physical flows of the Supply Plan. Production can absorb material and resource costs; a transfer carries accumulated value and adds freight or handling; a sale receives the cost chain that made fulfillment possible.

Because costs are propagated, an error in unit, quantity, route, price, COGS, or plan version can affect later views. Regenerate Finance after material changes to the physical plan and reconcile the totals before comparing scenarios.

Required inputs¶

• an executed and persisted Supply Plan;
• fulfilled demand, production, purchases, transfers, inventory, and loading outputs;
• prices and COGS;
• production costs;
• logistics and location costs;
• units, currencies, tax and allocation parameters required by the configured model.

See the economic decision data model for the connections between physical facts and economic interpretation.

Scenario comparison¶

A financially integrated review should compare at least:

• served demand, service, backlog, and lost sales;
• gross and net revenue;
• variable and fixed production cost;
• raw-material cost;
• inbound, storage, outbound, and freight costs;
• inventory and write-off effects when modeled;
• contribution margin or EBITDA impact;
• the customer, product, region, and internal unit where the change occurs.

A scenario with lower logistics cost may reduce service or move expense to production. A scenario with higher revenue may destroy contribution if it uses a costly route or capacity. The physical and financial readings must remain side by side.

Recommended journey¶

1. Confirm the Supply Plan and the plan series being evaluated.
2. Reconcile prices, COGS, production, logistics, location, and freight costs.
3. Generate the economic facts after the physical outputs are complete.
4. Review cost incidence and resolve missing or unexpected facts.
5. Analyze customer profitability and the cost path to each sale.
6. Analyze plants and distribution centers as internal operating units.
7. Compare scenarios using service, feasibility, cost, margin, and risk together.
8. Preserve the scenario assumptions and version used in the decision.

Edition comparison¶

Cost-to-Serve explains economic consequences. Return to Supply Network Planning, DRP, or Inventory Optimization when the economic result requires a new physical policy or scenario.