S&OP, Demand Planning & Forecasting worked example

Planning Horizon Coverage at 99% target planning-horizon coverage rate: a worked example

This scenario runs the planning horizon coverage calculation on the strong side: 99% target planning-horizon coverage rate, with every other input held at its documented default. Use it when planning horizon coverage in s and op, demand planning and forecasting needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Future periods with an approved demand plan: 8 count (unchanged)
  • Total periods in the planning horizon: 250 count (unchanged)
  • Target planning-horizon coverage rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Planning horizon coverage rate = planning horizon coverage count ÷ total planning horizon coverage population × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for planning horizon coverage rate, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for planning horizon coverage gap to target.
  • At this operating point the engine returns 8 count for planning horizon coverage count.
  • At this operating point the engine returns 250 count for total planning horizon coverage population.

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. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Planning horizon coverage rate: 3.2 % (headline result)
  • Planning horizon coverage gap to target: 95.8 points
  • Planning horizon coverage count: 8 count
  • Total planning horizon coverage population: 250 count

Run it with your numbers

  • Every input above is editable in the live Planning Horizon Coverage calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.