Tool
Marketing Budget and Customer Acquisition Calculator
A marketing budget is derived, not guessed. Enter a growth target, the value of one customer and your close rate, and this tool shows how many customers and enquiries the target implies, what you can afford to pay to acquire each one, and the budget range that follows. Where a business books appointments before it quotes, the two funnel stages can be entered separately. Scenarios compare conservative and aggressive versions of your own inputs rather than loading an industry average, and the results can be copied or printed. Every figure comes from your inputs.
What this tool does, and what it deliberately does not
It converts a growth target into the number of customers and enquiries required, and the acquisition cost your margin and retention can support. It does not load an industry benchmark, an average or an assumption of ours into the calculation. Nothing is hidden, and no email address is required to see the results.
Gross margin and the target return multiple arrive with default values so the form is not empty. Both are editable inputs, both are labelled as assumptions, and both are yours to replace with your own figures.
Your inputs
Does this customer pay again over time?
Leave blank if you would rather model the whole target as growth.
The revenue one new customer or job brings in. For recurring work, use the first year.
The share of each job left after direct costs. We default to 50% only so the form is filled in. Change it to your own figure.
Out of every 100 enquiries, how many become paying customers. Use your recorded figure if you have one. If you complete the two stages below, they replace this.
For businesses that book visits or inspections before a price. Leave blank to use a single enquiry-to-sale rate.
Of the appointments or inspections that happen, how many become customers. Both stage fields must be filled for the staged model to be used.
Leave at 1 for one-off work. For recurring service, enter how long a customer typically remains.
How many dollars of gross profit you want back for every dollar of acquisition spend. We default to 3. It is your target, not an industry standard.
Used only to show the implied return on what you already spend.
What those numbers imply
Enter your target revenue, the value of one customer and your enquiry-to-sale rate to see the customers, enquiries and acquisition cost the target implies.
How the calculation works
There are five steps, and each one uses a number you supplied.
- 01
Work out the revenue that has to be found
The target revenue minus current revenue, or the whole target if no current revenue was entered.
- 02
Convert revenue into customers
Revenue divided by the value of one customer or job. This is why average ticket matters so much: the same growth target with a larger average value needs far fewer customers.
- 03
Convert customers into enquiries
Customers divided by your lead-to-sale rate. If one in four enquiries becomes a customer, four times as many enquiries are needed as customers.
- 04
Set the acquisition cost you can afford
Average value multiplied by gross margin gives gross profit per customer. Multiply that by the years a customer stays, then divide by the return multiple you chose, to get the acquisition cost that still leaves a profit.
- 05
Multiply the two together
Customers required multiplied by affordable acquisition cost gives the budget range. It is arithmetic on your assumptions, and it changes if any assumption changes.
What customer acquisition cost means
Customer acquisition cost (CAC) is the total marketing spend divided by the customers it produced. Everything else in this tool exists to work out what that figure is allowed to be.
Blended CAC hides the difference between channels, so it is worth calculating per channel and per service line where you can.
Cost per lead is not CAC. Leads are the input; customers are the output. A cheap lead that never buys is more expensive than an expensive lead that does.
CAC should always be compared with the gross profit the customer produces, never with the revenue they produce. Revenue includes the cost of delivering the work.
Why close rate matters more than most people expect
Close rate sits between marketing and sales, and it multiplies the budget required.
Raising a lead-to-sale rate from 20 percent to 25 percent reduces the enquiries needed for the same growth by a fifth, without any change to advertising.
The reverse is also true. A fall in close rate looks like rising lead costs, and businesses often respond by increasing spend instead of investigating follow-up.
This is why measuring estimates and jobs, not just leads, tells a business where its money is actually going.
Why average ticket changes everything
Average value per customer is the divisor that decides how many customers a growth target requires.
Where a business sells work at very different values, one blended average describes neither end of the range, so model the service line you are growing.
Where a company can raise average ticket by selling better work rather than more work, it needs fewer customers for the same revenue, which usually means less marketing spend.
Why lifetime value matters for recurring businesses
For maintenance agreements, pool routes, pest control or any recurring service, the first visit is the beginning of the revenue rather than the whole of it.
A customer worth a few hundred dollars in the first year may be worth several thousand over the life of the relationship.
That accumulated gross profit is what makes a higher acquisition cost affordable, which is why retention and service quality are marketing variables.
The mirror image is churn. Where customers leave early, the affordable acquisition cost falls sharply, and no amount of budget will fix a retention problem.
Why capacity caps growth
Marketing can generate demand faster than a business can deliver it, and that is not a good outcome.
Crew, route and scheduling capacity determine how many customers can actually be served or jobs completed.
Where demand exceeds capacity, service quality and response times fall, churn rises and the lifetime value the budget was based on disappears.
Where capacity is the constraint, the honest next step is hiring, scheduling or raising prices rather than increasing spend.
Why a budget cannot be determined from revenue alone
This is the reason the tool asks for several inputs rather than one.
Revenue tells you the size of the business, not the profit inside it. A company with 50 percent gross margin can afford more acquisition than one with 20 percent on the same revenue.
Revenue says nothing about how many enquiries are needed, because that depends on the close rate.
Revenue says nothing about repeat custom, which changes what a customer is worth.
Any percentage-of-revenue rule is a constraint on spending, not a method for deciding it. The method is the calculation above, using your own numbers.
Hypothetical example, clearly labelled
Every figure in this table is invented to show the method. It is not a benchmark, not a recommendation, and not C&C Gorilla data. Nothing here should be copied into a plan without being replaced by the business’s own numbers.
| Input | Hypothetical value |
|---|---|
| Target annual revenue | $500,000 |
| Current annual revenue | $400,000 |
| Growth required | $100,000 |
| Average value per customer | $2,500 (hypothetical) |
| Gross margin | 45% (hypothetical assumption) |
| Lead-to-sale rate | 30% (hypothetical) |
| Average years retained | 3 (hypothetical) |
| Customers required | 40 |
| Enquiries required | 134, or about 11 per month |
| Gross profit per customer | $1,125 |
| Breakeven acquisition cost | $3,375 across three years |
| Acquisition cost at 3x return | $1,125 |
| Illustrative budget range | $45,000 to $135,000 across the year |
What this tool does not do
It is a calculator, not a forecast, and not a proposal.
It does not tell you what a lead or a customer will cost in your market. That comes from your own campaign data.
It does not guarantee performance, and no arithmetic can. It shows what your own assumptions imply.
It does not replace the sales conversation. The most useful thing a business can do with these outputs is check them against what it has actually observed.
Questions about marketing budgets and acquisition cost
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Talk through your growth model
If you would like the arithmetic checked against what your campaigns are actually producing, bring your figures and we will work through them together. No cost, and no obligation to become a client.