Maintenance & Reliability worked example

Maintenance Budget Variance with approved maintenance budget of 600,000 $: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop approved maintenance budget to 600,000 $, then walk the calculation through step by step. Compare approved maintenance budget with actual spend, open commitments, and accruals to see remaining budget headroom.

The inputs for this scenario

  • Approved maintenance budget: 600,000 $ (the input this scenario stresses; the baseline uses 1,200,000)
  • Actual maintenance spend: 1,120,000 $ (held at the documented default)
  • Open commitments: 45,000 $ (held at the documented default)
  • Accruals and reserves: 15,000 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Remaining maintenance budget = approved maintenance budget - actual maintenance spend - open commitments - accruals and reserves.
  • Budget Remaining works out to 0 $ at these inputs, and this is the headline figure for the scenario.
  • Committed and Actual Spend works out to 1,180,000 value at these inputs.
  • Approved Budget works out to 600,000 value at these inputs.
  • Budget Utilization works out to 0 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where approved maintenance budget sits at 1,200,000 $ and the headline result is 20,000 $, this scenario comes in 100% below the baseline at 0 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to approved maintenance budget, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It is a point-in-time snapshot; it does not forecast end-of-year landing or warn about a spend run-rate that will exhaust the remainder before period close.

Results at a glance

  • Budget Remaining: 0 $ (headline result)
  • Committed and Actual Spend: 1,180,000 value
  • Approved Budget: 600,000 value
  • Budget Utilization: 0 %

Run it with your numbers

  • To rerun this with your own numbers, open the live Maintenance Budget Variance calculator, set approved maintenance budget to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.