“What does a lead cost with you?” is the most common question in the first call — and the wrong one. The right one is: “What may a lead cost for you?” Because the target CPL is not a market constant, but the result of a calculation based on your own figures. Anyone who does not know it steers campaigns blind — no matter how well the account is maintained.
The calculation: backwards from the order
The target value emerges backwards, from the business result to the lead. Four figures are enough:
1. Average order value
What is a won order from the channel typically worth? For framework agreements or repeat business: apply the realistic first-year or lifetime value — depending on how your management calculates.
2. Contribution margin
After variable costs, the contribution margin remains from the order value — the substance from which marketing is paid. Anyone who calculates with revenue instead of contribution margin considers unprofitable campaigns to be winners.
3. Close rate
How many qualified leads does sales need for one order? At a rate of 1 in 5, each order “costs” five leads — the most important and most frequently estimated rather than measured factor in the calculation.
4. Target share of acquisition cost
What share of the contribution margin may new-customer acquisition claim? This management decision — conservative or growth-oriented — turns the calculation into a strategy.
A numerical example: €40,000 order value, 30% contribution margin = €12,000. Of that, 15% for acquisition = €1,800 per order. At a close rate of 1 in 6: the qualified lead may cost €300 — and is highly profitable at that. Anyone who measures the same campaign against a €50 benchmark would switch it off. That is the damage benchmarks do.
Target CPL = (order value × contribution-margin rate × acquisition share) ÷ leads per order. Four of your own figures — no benchmark in the world replaces them.
“A CPL is not high or low. It is profitable or unprofitable — and that is decided by your figures, not by the industry.”
Why benchmarks lead you astray
Industry averages mix the incomparable: the spare-parts dealer with €800 shopping carts and the plant engineer with seven-figure projects, the existing-customer campaign with new-customer acquisition, the soft newsletter lead with the vetted project lead. The average of these fits no one. Worse: it tempts wrong decisions in both directions — profitable campaigns are throttled because they are “above benchmark”, and unprofitable ones keep running because they seem “cheap”.
From target value to steering
With the derived target CPL, the account becomes steerable: it becomes the target CPA of the automated bidding, the yardstick in the monthly report, and the basis of every budget decision — because now it is possible to quantify what additional budget brings in orders. The prerequisite is a clean definition of the “qualified lead” together with sales, otherwise everyone calculates with a different figure. And: the calculation is alive. Close rate and order values change — the target value should be updated quarterly.
- Do you know your average order value from the Google Ads channel?
- Do you calculate with contribution margin — or with revenue?
- Is your close rate measured or estimated?
- Does a derived target CPL exist — and does it steer the automated bidding?
- Is the target value regularly updated with real sales figures?
By the way: you can run through this calculation directly — our CPL calculator guides you through all the figures up to the target value.