What is a revenue leak?
A revenue leak is demand a business has already paid to generate but fails to convert into revenue, caused by friction in the website, funnel, follow-up, or handoff between teams.
Every leak represents money already spent. The traffic was bought, the lead was generated, the demo was booked—and then something broke. Because the acquisition cost is already sunk, closing a leak is almost always cheaper per incremental dollar than buying more traffic.
Leaks cluster in predictable places: forms asking for more than a visitor will give, pricing that cannot be found without contacting sales, mobile layouts that bury the primary action, lead response times measured in days, checkout steps that fail silently, and renewal or onboarding handoffs where nobody owns the customer.
The reason leaks persist is organizational rather than technical. Marketing measures traffic, sales measures pipeline, product measures usage, and the gaps between those metrics are exactly where the leaks sit—visible to everyone in aggregate, owned by no one specifically.
Finding them is mostly a matter of instrumenting the funnel stage by stage and looking for the step where the drop-off is disproportionate. The largest single drop is nearly always worth more attention than the sum of every small optimization elsewhere.
What to do about it
- Measure conversion at every funnel stage, not just top and bottom.
- Fix the single largest drop-off before running any A/B test.
- Assign one owner to each handoff between teams.
Frequently asked questions
How do I find revenue leaks on my website?
Instrument each funnel stage and compare drop-off rates. The stage with the disproportionate drop is the leak. Stack Finder's free CRO Agent scan surfaces the largest one automatically.
Is fixing a revenue leak cheaper than buying more traffic?
Almost always. The acquisition cost for leaked demand is already spent, so recovering it produces incremental revenue at close to zero marginal acquisition cost.