Maintenance & Reliability calculator
Maintenance Budget Variance Calculator
Check remaining budget after known maintenance exposure. Enter the approved budget, actual spend, unaccrued commitments and separate accruals or reserves for the same period.
What this calculator does
- Reconcile remaining maintenance budget against posted spending, outstanding commitments and separate accruals or reserves.
Formula used
- Unposted exposure = unaccrued open commitments + separate accruals and reserves
- Total exposure = actual maintenance spend + unposted exposure
- Budget remaining = approved budget − total exposure
- Budget utilization = 100 × total exposure ÷ approved budget
- Remaining percentage = 100 × budget remaining ÷ approved budget
Inputs explained
- Approved Maintenance Budget: Approved budget for this reporting period and maintenance scope.
- Actual Maintenance Spend: Posted expenses excluding the separate unposted accruals.
- Unaccrued Open Commitments: Outstanding commitments excluding posted expenses and the entered accruals.
- Accruals and Separate Reserves: Unposted incurred costs and separate reserves outside other entries.
How to use the result
- Best suited to monthly maintenance budget review, outstanding work-order reconciliation.
- The result is known exposure, not an estimate of unentered future work. Unused budget does not establish that maintenance work is complete.
Current U.S. benchmarks
- U.S. manufacturing runs at 75.7% of capacity (Federal Reserve, Aug 2026). New factory orders are up 8.5% year over year (Census).
Common questions
- Are open commitments the entire purchase-order balance? Use only the portion not already posted or accrued. Reconcile purchase orders before adding their balance to this ledger.
- Why can utilization exceed 100%? Known exposure can exceed the approved budget. The excess also appears as negative remaining dollars.
- How do utilization and remaining percentage differ? Utilization is exposure divided by the approved budget. Remaining percentage measures the share still available, so the two sum to 100%.
- What happens with no approved budget? Remaining dollars can still show an overrun, but percentage utilization and remaining percentage require a positive budget.
Last reviewed 2026-10-06.