Knowledge base · diagnostics

Where your sales funnel leaks, and how to find it in one evening

in short

Funnel losses are almost never spread evenly: one or two transitions take most of them. You can find those in an evening without an analyst. Calculate the conversion rate of every stage-to-stage transition and find where the drop is steepest relative to its neighbours. Then pull twenty deals that stalled at that exact point and read them end to end. The arithmetic tells you where it leaks; reading tells you why, and without the second the first gives you nothing to act on.

Step 1. The numbers

  1. Count how many deals entered each stage over the last three months.
  2. Calculate the conversion rate between every pair of adjacent stages.
  3. Find the transition with the lowest rate relative to its neighbours.
  4. Separately, calculate average time spent in each stage.
  5. Flag any stage where time is half again as long as its neighbours.

Step 2. The conversations

Pull twenty deals that stalled at the transition you found and read them from the beginning. Read them consecutively, not selectively: a sample chosen on impression returns the conclusion you walked in with.

What to look for in those twenty

  • whether price was quoted, and on which message
  • how many times you followed up after the customer's last reply
  • whether a next step with a specific date was agreed
  • how long the customer waited for the first reply
  • whether anyone replied at all
It is usually not what you expected. On one project the owner was certain he was losing on price. Across twenty conversations price came up in nine, on average at the eighth message. Half the customers left without ever learning what it cost.

Four leaks that show up most often

  1. Between enquiry and first contact. Some people never got a reply. Cheapest leak to fix.
  2. Between contact and price. Conversations happen, price never lands. Fixed by a rule, not by training.
  3. Between price and decision. No follow-up: the thread died after the second or third return.
  4. Between yes and payment. A pause before the invoice goes out. Fastest leak to fix.

What not to do

  • do not start by surveying the team: you will get a theory, not a location
  • do not change three things at once: you will not know which one worked
  • do not measure conversion only from qualified leads: that is where the leak hides

Questions people ask

How many conversations do I need to read to see the pattern?

Twenty consecutive ones at the problem transition. If no pattern emerges, read twenty more from the adjacent stage.

Can I find the leak without a CRM?

Yes, by hand through chats and call recordings. Slower, same result: the tool matters less than the fact that you read conversations consecutively.

Sources: OpenAI, «From assistance to execution: How enterprises put AI to work» (Enterprise Signals, August 2026) - weekly active enterprise Codex users in sales grew 41x between February and June 2026, against 5x in engineering; lead response speed (Harvard Business Review, Lead Response Management Study, 2025-2026 roundup); touches per closed deal (Gartner B2B Sales Benchmark, 939 companies, 2025); seller productivity (Salesforce State of Sales). Project figures are Double Sales' own measurements on 2026 engagements.
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