Most teams ask about the logo when the business feels stale, confusing, or ignored. The logo may be part of the problem. It may also be the easiest object to blame.
A useful logo decision starts by naming the job the current mark performs. Does it help people recognize the company, find it in search, remember it on a sign, trust it on an invoice, choose it on a shelf, or identify it in an app? If the old cue still performs that job, the new mark has to beat it under real conditions.
A logo should change when the mark creates measurable friction: poor legibility, weak small-size performance, category confusion, competitor similarity, legal risk, damaged trust, poor accessibility, or a mismatch with a real audience or business-model shift.
A logo should not change because the founder is bored, a competitor looks newer, a redesign deck looks polished, or the website is not converting. Those may be proof, offer, positioning, traffic, or sales problems wearing a logo costume.
The decision should end in one of five verdicts: keep the logo, refresh the system, redesign the mark, repair a different brand problem first, or stop.
These cases show when a cleaner mark damaged recognition, when simplification worked, and when real-world reading conditions changed the answer.