Aftermarket, Field Service & Service Parts worked example

Service SLA Attainment at 68% target sla attainment: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target sla attainment to 68%, then walk the calculation through step by step. Calculate the percentage of service calls completed within the response, repair, or resolution SLA target.

The inputs for this scenario

  • Service calls meeting SLA: 905 calls (held at the documented default)
  • SLA-measured service calls: 980 calls (held at the documented default)
  • Target SLA attainment: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Service SLA attainment = calls meeting SLA ÷ SLA-measured calls × 100.
  • Service SLA attainment works out to 92.35 % SLA attainment at these inputs, and this is the headline figure for the scenario.
  • SLA attainment gap works out to -24.35 percentage points at these inputs.
  • SLA-compliant calls works out to 905 calls at these inputs.
  • SLA-measured calls works out to 980 calls at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target sla attainment sits at 95% and the headline result is 92.35 % SLA attainment, this scenario lands almost exactly on the baseline at 92.35 % SLA attainment.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target sla attainment, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats every call equally, so it can hide that your most strategic or high-penalty accounts are the ones breaching while volume from easy calls props up the average.

Results at a glance

  • Service SLA attainment: 92.35 % SLA attainment (headline result)
  • SLA attainment gap: -24.35 percentage points
  • SLA-compliant calls: 905 calls
  • SLA-measured calls: 980 calls

Run it with your numbers

  • To rerun this with your own numbers, open the live Service SLA Attainment calculator, set target sla attainment to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.