Maintenance & Reliability worked example

Maintenance Budget Variance with approved maintenance budget of 3,000,000 $: a worked example

Push approved maintenance budget up to 3,000,000 $ and the picture changes. This example computes every intermediate figure at that operating point. Use it in monthly maintenance financial review to spot overspend risk before the period closes.

The inputs for this scenario

  • Approved maintenance budget: 3,000,000 $ (raised for this scenario; the documented default is 1,200,000)
  • Actual maintenance spend: 1,120,000 $ (unchanged)
  • Open commitments: 45,000 $ (unchanged)
  • Accruals and reserves: 15,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Remaining maintenance budget = approved maintenance budget - actual maintenance spend - open commitments - accruals and reserves) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,820,000 $ for budget remaining, the number this scenario is built around.
  • At this operating point the engine returns 1,180,000 value for committed and actual spend.
  • At this operating point the engine returns 3,000,000 value for approved budget.
  • At this operating point the engine returns 60.67 % for budget utilization.

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 9,000% above the baseline at 1,820,000 $.
  • It computes remaining maintenance budget after deducting actual spend, open commitments, and accruals, then expresses that remainder as a percentage of the approved budget. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Budget Remaining: 1,820,000 $ (headline result)
  • Committed and Actual Spend: 1,180,000 value
  • Approved Budget: 3,000,000 value
  • Budget Utilization: 60.67 %

Run it with your numbers

  • Every input above is editable in the live Maintenance Budget Variance calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.