Insights · sales, win-loss

Win/loss interviews: what prospects won't tell your sales reps

Lost-deal reviews run by sales hear a polite version of the truth. Independent, paid win/loss interviews with decision-makers reveal the real patterns.

Jens Ammitzböll
3 July 2026 · 4 min read

Artwork for Win/loss interviews: what prospects won't tell your sales reps

Every sales organisation has a story for every lost deal. Price. Timing. An incumbent relationship. A competitor who promised the moon. The stories are told in pipeline reviews, entered into the CRM under a drop-down reason, and rarely questioned.

Most of them are incomplete. Some are wrong. The buyer knows the difference, but the buyer is rarely asked, and when the rep asks, the buyer is polite.

This post explains what independent win/loss interviews reveal, why they need to be paid and face to face, and how to turn a set of interviews into changes that win more deals.

Why the rep's version is incomplete

When a prospect chooses someone else, the rep hears a version of the reason that is designed to end the conversation without conflict. "It came down to price" is the most common. It is also the least informative, because price is only decisive when everything else looks equal, and the interesting question is why everything else looked equal.

Reps also have an incentive, mostly unconscious, to attribute losses to factors outside their control. A loss on price is a pricing problem. A loss on features is a product problem. A loss because the buyer never understood the proposition, or because the second meeting was with the wrong people, is a sales problem, and that is the one that gets reported least.

None of this makes reps dishonest. It makes their account one side of a two-sided story.

What buyers say to an independent interviewer

When a decision-maker is interviewed by someone outside the vendor, for 30 to 45 minutes, with a fee for their time, the conversation changes. They talk about the process as they experienced it. The recurring themes look like this:

  • Proposition. The offer was not clearly different from the alternatives, or was different in ways the buyer did not care about.
  • Pricing. Not the level, but the structure: hard to compare, hard to forecast, or presented too late.
  • Competition. What the winning vendor did that the losing one did not. Often it is not product; it is a reference call, a pilot, or a more senior presence in the room.
  • Sales behaviour. Missed follow-ups, generic proposals, presenting before understanding the problem, or being outmatched at the final presentation.
  • Buying experience. How easy it was to get answers, involve procurement, or get a straight answer on delivery.

Buyers are remarkably specific once they trust that the interview is not a sales call in disguise. They will say which slide lost them, which question went unanswered, and what the competitor said about you.

Why "paid" and "face to face" matter

Paying decision-makers for their time is not a bribe for candour. It is a signal that their view is valued, and it raises response rates from single digits to somewhere between 30 and 50 per cent. It also changes who accepts: the senior person who actually made the decision, rather than a junior contact who was easy to reach.

Face to face, or at minimum on video, matters because the useful material is in the follow-up questions. A survey will tell you that 40 per cent cited price. An interview will tell you that price came up because the proposal did not make the value case, and that the buyer would have paid more for a clearer implementation plan.

Then interview your own sales team

The second half of the method is to interview the reps and managers involved in the same deals. Same questions, same structure: what happened, where did we lose it, how did we compare, what would you do differently?

This is not a performance review. It is done without blame, and the purpose is to build a second account of each deal to set against the buyer's.

Compare the two accounts, deal by deal

The insight is in the gap. For each deal, lay out what sales thought happened next to what the buyer experienced. Then look across all the deals.

One lost deal is an anecdote. Twenty reveal patterns. The typical findings are uncomfortable and useful in equal measure:

  • Sales thinks price; buyers say the value was never made concrete.
  • Sales thinks the competitor had a better product; buyers say the competitor understood their problem faster.
  • Sales thinks the timing was wrong; buyers say they made the decision three weeks before the rep thought they were still in play.

The output is a short set of practical, blame-free recommendations across proposition, pricing, competitive positioning, sales behaviour and the buying process. Most of them are cheap to implement. The expensive part was not knowing.

How to run it well

  • Select deals deliberately: a mix of segments, deal sizes and reps, from the last six to nine months so the memory is fresh.
  • Use an independent interviewer. Internal staff, however skilled, do not get the same answers.
  • Pay decision-makers, and tell them the interview is confidential and not attributable.
  • Interview the sales side after the buyer side, so the questions can be sharpened.
  • Present findings as patterns, not as individual deal post-mortems.
  • Repeat quarterly at a smaller scale once the first round has been actioned.

Related questions

How many lost-deal interviews do you need to see patterns?
Fifteen to twenty-five interviews with decision-makers is usually enough for a B2B sales organisation of medium size. Below ten you have anecdotes. Above thirty the marginal insight falls off unless you are comparing several markets or segments.
Will lost prospects really agree to be interviewed?
Yes, if it is independent, brief, and paid. Response rates of 30 to 50 per cent are normal when a third party invites them, the interview takes 30 to 45 minutes, and there is an honorarium. Rates collapse when the request comes from the rep who lost the deal.
Should we also interview the deals we won?
Ideally, yes. Won deals show what your proposition and sales approach look like when they work, and the contrast makes the loss patterns much clearer. A ratio of two losses to one win is a sensible starting point.

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