Demand Planner vs Supply Planner

1 min read

Demand Planners and Supply Planners work on the same planning cycle but own different questions.

Demand Planner:

What demand should the business plan against?

Supply Planner:

How can the business meet that demand with available supply, capacity and inventory?

Quick comparison

Area Demand Planner Supply Planner
Main output consensus demand forecast feasible supply plan
Main uncertainty customer/market demand capacity/material/lead time
Core metrics forecast accuracy, bias service, inventory, shortages
Stakeholders sales, marketing, finance manufacturing, procurement, suppliers

Scope

Demand planning is upstream of supply planning in the planning logic.

Supply planning tests feasibility.

Daily work

Demand:

  • forecast update;
  • exception review;
  • commercial input;
  • consensus.

Supply:

  • material/capacity review;
  • shortage analysis;
  • replenishment;
  • constraints.

KPIs

Demand:

  • forecast accuracy;
  • bias;
  • forecast value add.

Supply:

  • service;
  • inventory;
  • shortages;
  • plan adherence.

Tools

Both may use:

  • ERP;
  • planning software;
  • Excel;
  • BI.

Demand roles may use more statistical forecasting.

Supply roles may use more MRP/capacity logic.

Skills

Demand:

  • forecasting;
  • stakeholder challenge;
  • commercial understanding.

Supply:

  • inventory;
  • MRP;
  • capacity;
  • supplier/manufacturing coordination.

Title variation

Some companies combine demand and supply planning.

Some use Planner titles without specifying which side.

Read deliverables.

Transition paths

Demand → Supply:

Add inventory, MRP and capacity.

Supply → Demand:

Add forecasting, bias and commercial demand review.

The distinction is forecast ownership versus supply feasibility.

Related content

Sources