S&OP, Demand Planning & Forecasting worked example

Planning Horizon Coverage at 68% target planning-horizon coverage rate: a worked example

This worked example runs the planning horizon coverage numbers for a tougher week than the baseline: 68% target planning-horizon coverage rate instead of the typical 95%. Estimate planning horizon coverage for sandop, demand planning and forecasting using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Future periods with an approved demand plan: 8 count (held at the documented default)
  • Total periods in the planning horizon: 250 count (held at the documented default)
  • Target planning-horizon coverage rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Planning horizon coverage rate = planning horizon coverage count ÷ total planning horizon coverage population × 100.
  • Planning horizon coverage rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Planning horizon coverage gap to target works out to 64.8 points at these inputs.
  • Planning horizon coverage count works out to 8 count at these inputs.
  • Total planning horizon coverage population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target planning-horizon coverage rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it at the start of a planning cycle to confirm the rolling horizon is fully populated before committing supply decisions. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Planning horizon coverage rate: 3.2 % (headline result)
  • Planning horizon coverage gap to target: 64.8 points
  • Planning horizon coverage count: 8 count
  • Total planning horizon coverage population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Planning Horizon Coverage calculator, set target planning-horizon coverage rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.