How to answer: “Tell me about a deal you lost.”

What they’re actually asking

Same muscle as the failure question but with commission on the line. They want to see clean ownership of a real loss, a specific diagnosis, and the change you made after. Reps who blame the product, the pricing, or the territory are announcing what they'll say about THIS company later.

How to structure your answer

Pick a loss that stung and that you understand completely. Structure: the deal, the moment it died, your honest diagnosis of what YOU missed, the change you made, and a later win that proves the lesson took. Own it in the first sentence.

Example answer

“I lost an $80k renewal I'd have told you was safe — spent the quarter talking to my champion and never noticed a new CFO had come in with a mandate to consolidate vendors. By the time I asked for the meeting, the decision was made. That loss rewrote my playbook: now I map every account's power structure quarterly, and any deal where I'm single-threaded through one contact gets flagged at-risk no matter how friendly the relationship is. Caught two account changes early the very next quarter because of it.”

What sinks people

• Choosing a deal you lost for reasons conveniently outside your control
• Blaming price or product — the interviewer hears how you'll talk about them
• No behavior change afterward. A loss without a lesson is just a sad story.