Online tools that advertise an “AI” or “instant” estimate typically work by comparing your inputs to generalized patterns. That can feel helpful—but it can also mislead you in ways that matter.
Common reasons calculator outputs understate value include:
- Incomplete wage history (for example, overtime, weekend differentials, or shift premiums that aren’t captured in a simplified entry)
- Timing gaps between injury, reporting, and medical follow-up—something insurers scrutinize closely in Illinois
- Restrictions that don’t match your actual job demands, especially if your work includes repetitive lifting, loading/unloading, or commuting-related fatigue that affects symptoms
- Missing impairment documentation, which can change whether the claim is evaluated as temporary vs. permanent
A calculator may produce a number. It can’t confirm what the insurer will accept as “provable” in negotiations.


