Do emergency repairs belong in PM compliance?

No. Keep the denominator to the scheduled preventive tasks in the due-date cohort. Emergency repairs belong in their own workload measure.

Does a late PM count after it is completed?

It remains a missed original deadline in this timeliness measure. Record its eventual completion separately so the overdue workload also stays accurate.

Can I move due dates after the reporting period?

Do not rewrite this cohort’s original commitments. Preserve the original date and record approved schedule changes separately.

Does high compliance prove the PM program works?

No. Review failure history, task findings and asset criticality to assess effectiveness. Completing unnecessary tasks on time can still produce a high percentage.

Maintenance & Reliability calculator

PM Compliance Rate Calculator

Check whether preventive tasks met their original due dates. Enter the fixed cohort of due tasks, on-time completions and your required compliance percentage.

What this calculator does

Measure preventive maintenance timeliness using the original due-date cohort.

Formula used

On-time completion = completed on time ÷ scheduled cohort × 100
Missed deadlines = scheduled cohort − completed on time
Missed share = missed deadlines ÷ scheduled cohort × 100
Target margin = on-time completion − minimum required completion

Inputs explained

PM Tasks Completed on Time: Due-cohort items completed by their original recorded deadline.
PM Tasks Due: All items due in the fixed reporting cohort.
Minimum On-Time Completion: Your required on-time completion percentage for this cohort.

How to use the result

Best suited to preventive schedule review, overdue task investigation.
This does not establish that a preventive task was technically effective. Tasks have equal weight regardless of asset criticality.

Current U.S. benchmarks

U.S. manufacturing runs at 75.9% of capacity (Federal Reserve, Sep 2026). New factory orders are up 8.5% year over year (Census).

Common questions

Do emergency repairs belong in PM compliance? No. Keep the denominator to the scheduled preventive tasks in the due-date cohort. Emergency repairs belong in their own workload measure.
Does a late PM count after it is completed? It remains a missed original deadline in this timeliness measure. Record its eventual completion separately so the overdue workload also stays accurate.
Can I move due dates after the reporting period? Do not rewrite this cohort’s original commitments. Preserve the original date and record approved schedule changes separately.
Does high compliance prove the PM program works? No. Review failure history, task findings and asset criticality to assess effectiveness. Completing unnecessary tasks on time can still produce a high percentage.

Last reviewed 2026-10-13.