Product Compliance, Labeling & Certification worked example

UL Test Cost at 98% samples passing first-round testing: a worked example

What does the result look like when samples passing first-round testing reaches 98%? The full calculation is worked below with real intermediate numbers. An engineering manager uses this to budget a UL safety certification project before committing a new appliance to market.

The inputs for this scenario

  • Test samples submitted to lab: 6 samples (unchanged)
  • UL lab fee per sample: 4,200 $/sample (unchanged)
  • Samples passing first-round testing: 98 % (raised for this scenario; the documented default is 85)
  • File setup and follow-up service fee: 5,500 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Total UL cost = samples x lab fee per sample x (first-round pass % / 100) + file and follow-up fee) to the inputs above produces each figure below.
  • At this operating point the engine returns 30,196 $ for total ul test cost, the number this scenario is built around.
  • At this operating point the engine returns 5,033 $ / piece for ul test cost per unit.
  • At this operating point the engine returns 24,696 $ for variable ul test cost.
  • At this operating point the engine returns 5,500 $ for fixed ul test cost adder.

How this compares with the baseline

  • Against the tool's baseline example, where samples passing first-round testing sits at 85% and the headline result is 26,920 $, this scenario comes in 12.17% above the baseline at 30,196 $.
  • A figure at this level is achievable when samples passing first-round testing is genuinely sustained, not just peaked for a shift. The pass-rate term scales the lab fee rather than modeling actual retest cycles, so treat it as a first-pass budgeting estimate, not a substitute for a formal UL quote that itemizes each standard and construction.

Results at a glance

  • Total ul test cost: 30,196 $ (headline result)
  • Ul test cost per unit: 5,033 $ / piece
  • Variable ul test cost: 24,696 $
  • Fixed ul test cost adder: 5,500 $

Run it with your numbers

  • Every input above is editable in the live UL Test Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.