Why Your Best Rep Might Be a Bad Manager
- No invented stats
- Written for UK readers
- 3 min read
- Published 30 October 2026
Promoting your best rep into management is the most natural decision in sales and one of the most reliably expensive. It costs you a top performer and gains you an inexperienced manager, and when it fails you usually can't undo it — the rep has told everyone about the promotion, and going back to carrying a bag feels like a demotion, so they leave.
The reasoning behind the default is understandable: they've proved they can do the job, they know the product, they've earned it, and the other reps respect them. All true. None of it is evidence that they can manage.
The skills barely overlap
Selling is largely an individual craft: reading a room, holding your nerve on price, keeping enough activity going to hit a number you own. Managing is almost entirely the opposite — getting results through people who will do the job differently from how you would.
Three specific places where great reps struggle:
They can't explain what they do. Excellence is often unconscious. A rep who instinctively knows when to push and when to back off has no framework for that, because they never needed one. Asked to teach it, they say "you just get a feel for it", which is useless to a rep who hasn't got the feel yet. Meanwhile a merely good rep who had to work it out deliberately often makes a far better coach, because they own the explanation.
They take the deal off the rep. This is the classic failure. A struggling rep has a wobbling deal, and the new manager — who can hear exactly what's wrong — joins the call and fixes it. The deal closes. The rep learns nothing and, worse, learns that when things get hard someone else takes over. Do that for a year and you have a team of people who can't close without you, and a manager doing five jobs.
They find the admin intolerable. Forecast reviews, one-to-ones, hiring, the HR side of a performance problem, sitting in meetings about next year's comp plan. For someone whose satisfaction came from closing, this can feel like a year of nothing happening. Some adjust. Some quietly resent it and let the people part slide, which is the part that matters.
What to look for instead
Performance is a filter, not a predictor — you probably can't promote someone who couldn't sell, but selling well tells you little about the next job. The better signals show up before anyone is promoted:
- Do other reps already go to them for help, unprompted?
- When they explain how they won something, is it a method or a story about themselves?
- Do they get satisfaction from someone else's win, visibly, or does it read as competition?
- Will they have an uncomfortable conversation with a peer rather than route it to the manager?
The cheapest way to find out is to give the job away in pieces first: onboarding a new starter, running the weekly team session for a month, owning a patch of the pipeline review. That's a low-cost trial for both sides, and it lets someone discover they don't want it without anyone losing face. Our 30/60/90 onboarding guide is a reasonable first thing to hand over.
The counter-argument
The honest case for promoting the top performer is credibility. Sales teams are unusually resistant to being managed by someone who hasn't done the job — a manager who can't hold their own on a live call with a difficult buyer will struggle to be taken seriously, however good their coaching theory is. Hiring a manager from outside carries its own risks, and a team that watches its best rep get passed over will draw conclusions about whether performance is rewarded.
Both points are fair. The resolution isn't "never promote your best rep" — it's to stop treating the promotion as a reward for past performance and start treating it as a different job with different requirements. That includes building a senior individual-contributor path that pays well, so the only way to progress isn't through management. A team where the only promotion available is to manager will keep turning great sellers into unhappy managers, and will keep being surprised by it.
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