Dividing last month’s ad spend by its form fills gives a cost per lead, but it can’t show which source brought paying customers. Trojan Digital Marketing, an Indianapolis company running Google Ads and microsite lead networks, counts inquiries, qualified leads and customers separately, so a cheap source of junk inquiries can’t hide. Bring a redacted lead list to a call: the first strategy call is free, and during business hours we aim to reply within five minutes.
Use our free lead cost calculator with one defined period and one spending scope. You can compare the arithmetic behind raw lead cost, qualified lead cost and customer acquisition cost. The tool does not verify your CRM records, predict close rates or determine the value of an uncompleted job.
Define the lead before comparing the price
- A: current page
- Observe the starting version.
- B: one change
- Compare with the same measurement.
For this workflow, a raw lead is a recorded inquiry from the selected source. We count Garrison, the microsite software from Trojan Digital Marketing, this way. Its residential roofing sites drew 11 calls and form inquiries from the original 200 Indiana websites from June 29 through August 31, 2026, missed calls excluded. That says nothing yet about booked jobs. A qualified lead meets your documented criteria, such as relevant service, supported location and a genuine project request. A customer is an opportunity that reaches the business outcome you choose to count. Define whether that means an accepted proposal, completed work or collected payment.
We pick one definition and stick to it. If Google Ads inquiries count when forms arrive but referral customers count after payment, the comparison mixes different stages. Record the source, inquiry date, qualification outcome and customer outcome in a way your team can reconcile.
Calculate three costs from one hypothetical cohort
| Metric | Hypothetical count or amount | Calculation | Result |
|---|---|---|---|
| Campaign spending | $3,000 | Selected spending scope | $3,000 |
| Raw inquiries | 100 | $3,000 ÷ 100 | $30 per inquiry |
| Qualified opportunities | 50 | $3,000 ÷ 50 | $60 per qualified lead |
| New customers | 10 | $3,000 ÷ 10 | $300 per customer |
To reproduce this example in the calculator, enter a $3,000 budget, $30 paid acquisition cost per raw inquiry, a 50% qualification rate and a 20% qualified close rate. Set sales handling cost to zero for this simplified example. These rates can be calculated from your records; the tool does not import or validate the underlying counts.
The qualification rate is 50 divided by 100, or 50%. The close rate among qualified opportunities is 10 divided by 50, or 20%. The raw inquiry to customer rate is 10 divided by 100, or 10%. We label the denominator beside every rate so the report still makes sense to someone who didn’t build it.
Choose what spending the report includes
The calculator separates paid acquisition cost from sales handling cost per raw inquiry. Include a handling amount only when it is supported by your chosen method, and remember that it affects acquisition cost per customer. The retained contribution setting lets you explore leaving part of contribution outside the acquisition allowance.
A media only calculation answers how advertising spend relates to outcomes. A broader acquisition calculation can include management, creative production, landing page work or sales costs when your reporting method assigns them to that cohort. Neither view should quietly change its definition between sources or months.
In this example, adding $1,000 of included campaign costs raises the selected spend from $3,000 to $4,000. With the same ten customers, acquisition cost becomes $400. We save the spending definition right beside that number. The qualified lead cost guide provides a source comparison without assuming every vendor counts leads the same way.
Compare acquisition cost with contribution
- Media
- Advertising spend.
- Landing page
- Work on the destination page.
- Measurement
- Tracking and review.
- Management
- Campaign planning and upkeep.
Revenue is not the same as the amount available to cover acquisition. Suppose each hypothetical completed project produces $900 of contribution before marketing under your chosen cost definition. Ten customers then produce $9,000 of contribution. Subtracting $3,000 of campaign spend leaves $6,000 before other excluded expenses.
This is a scenario using supplied assumptions. It is not net profit or a forecast. If your contribution figure already subtracts the same marketing costs, subtracting them again would count them twice. Use the job profit calculator to examine project inputs, then clearly document the boundary between job costs and acquisition costs.
Model a threshold without calling it a safe budget
At $900 contribution per customer and a 20% qualified close rate, one qualified lead has an assumed contribution value of $180 before acquisition. That is $900 multiplied by 0.20. A qualified lead costing $180 would consume the full assumed contribution in this simplified model, leaving nothing for excluded costs or a desired surplus.
Use the contribution and lead budget worksheet to explore lower close rates and different project values. A threshold based on an optimistic rate can encourage spending the business cannot support. We test a range drawn from your records when we have them, and we label every guess as a guess.
Keep the measurement period coherent
A lead received near the end of a month may become a customer later. Dividing this month’s spend by this month’s customers can mix newly generated opportunities with earlier cohorts. A cohort review follows the inquiries created in one period and updates their outcomes as the sales cycle develops.
You can maintain a separate operational view of work sold each month. Both views are useful when labeled. We keep open opportunities marked open instead of calling them all lost or all future wins. Small samples can move sharply when one additional project closes, so show counts alongside rates.
Connect the result to the next marketing decision
If qualification is weak, we review the targeting, search terms, offer and landing page questions first. If qualification is strong but sales outcomes are weak, inspect proposal fit and follow up before assuming the ad creative caused the problem. Google’s offline conversion documentation explains a separate way to connect later outcomes with advertising measurement when properly implemented.
Our Google Ads management services tie campaign decisions to outcomes you define. Bring a redacted sample of your lead stages and spending, and Jeff Clerisier, our founder, will go through it. For ongoing practical measurement guidance, join the newsletter. Start with a consistent record before seeking a more elaborate dashboard.
Frequently asked questions
Which lead cost should I report to the business owner?
Show raw lead cost, qualified lead cost and customer acquisition cost together when the data supports them. Include the counts and definitions. One number alone can conceal whether the issue is inquiry relevance, sales conversion or the spending scope.
What happens when a campaign has no customers yet?
A finite acquisition cost cannot be calculated by dividing spend by zero. Report the spend and zero observed customers, with open opportunities listed separately. Do not replace the missing result with zero dollars or an assumed future customer count.
Does exclusive mean a lead will close?
No. Exclusive routing describes how a provider handles the inquiry under its agreement. A customer can still contact other businesses independently. Read the branded exclusive organic lead explanation and evaluate fit, attribution and outcomes separately from the exclusivity claim.


