1What client acquisition cost measures
CAC is what it costs you to turn a stranger into a paying client. Cost per lead and cost per booked call are steps on the way there.
| Number | What it tells you | Formula |
|---|---|---|
| Cost per lead | What one name and email costs | Total cost ÷ leads |
| Cost per booked call | What one call on your calendar costs | Total cost ÷ booked calls |
| Cost per shown call | What one real conversation costs | Total cost ÷ calls that showed |
| Client acquisition cost | What one paying client costs | Total cost ÷ new clients |
Worked example: Maya's month
Maya is a made-up business coach. She sells a $6,000 program on sales calls. Last month she spent $6,000 on ads, $1,000 on other marketing, $3,500 on a setter and a closer, and $500 on tools. That is $11,000. She won 7 new clients.
- Add every cost: $6,000 + $1,000 + $3,500 + $500 = $11,000.
- Count new clients in the same month: 7.
- Divide: $11,000 ÷ 7 = $1,571 per client.
- Compare it to the price: $1,571 is 26% of $6,000.
If Maya only counted ads, she would say her CAC is $6,000 ÷ 7 = $857. She would be $714 a client too low.
2What to count as a cost
Count everything you would stop paying if you stopped getting new clients. Leave out what it costs to deliver to clients you already have.
| Cost | Count it? | Maya | Yours |
|---|---|---|---|
| Ad spend | Yes | $6,000 | |
| Other marketing (content help, an agency, a video editor) | Yes | $1,000 | |
| Setters and closers (pay and commission) | Yes | $3,500 | |
| Tools (funnel pages, CRM, calendar, dialer) | Yes | $500 | |
| Your own hours on sales calls | Track it, see the channel table | not counted | |
| Coaching and delivery for clients | No, that is delivery cost | not counted | |
| Total | $11,000 |
Use one whole month. A single week jumps around too much, because one big close or one bad week of calls swings the number.
3The client acquisition cost calculator
Use one month of numbers. It starts with Maya's.
Clients = booked calls × show rate × close rate, so a month can show an average like 8.4 clients. Bands: green under 20% of price, amber 20% to 35%, red over 35%.
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We only use this to send your numbers and to follow up about your client acquisition. If you add a mobile, we may call or text you about it.4Read your verdict: CAC against your price
A $1,500 CAC is cheap on a $15,000 program and a disaster on a $1,500 one. Judge CAC as a share of your price.
| CAC as % of price | Verdict | What it means |
|---|---|---|
| Under 20% | Green | Healthy. You can afford to spend more to grow. |
| 20% to 35% | Amber | It works, but there is not much left once delivery costs come out. Fix a step before you scale. |
| Over 35% | Red | You are paying too much for each client. Do not add ad spend until a step is fixed. |
If clients pay you again (a renewal, a second program, a monthly plan), put lifetime value in the calculator too. The customer lifetime value calculator works it out, plus the most you can pay per booked call. A common rule of thumb is lifetime value of at least 3 times CAC. Your margin decides the real line. Operators commonly judge cost per call against their own cash per sale, not someone else's benchmark. They also report that a $500 client worth $5,000 beats a $200 client worth $1,000, so chase the ratio, not the cheapest client.
| LTV:CAC | What it means |
|---|---|
| 3x or more | Room to spend more per client |
| 2x to 3x | Workable, watch it |
| Under 2x | Too thin to scale with paid ads |
5Where the money leaks: the cost at every step
Each step loses people, which makes the next step cost more per person. The table follows your numbers from the calculator.
| Step | People | Kept from last step | Cost each |
|---|---|---|---|
| Leads | 400 | $27.50 | |
| Booked calls | 50 | 12.5% | $220 |
| Calls that showed | 35 | 70% | $314 |
| New clients | 7 | 20% | $1,571 |
The biggest jump is almost always the last one: from a shown call to a client. That is why the close rate matters so much.
Show rate matters here too. One client booked 664 sales calls in three months, and 89% of them showed up. At a 70% show rate, those same 664 calls would have been about 465 conversations instead of 591: 126 fewer sales calls, paid for in full. Their result, not typical, and not a promise of yours. Source: Cashflow Coaches results, booking dashboard.
To see which step drops your CAC the most when you fix it, run the lever tool on the client acquisition cost guide with the same numbers.
6Compare your channels side by side
Referrals cost your hours, and you cannot buy more of them when you want to grow. The table puts a price on your time so channels compare fairly.
| Channel | Money a month | Your hours | Clients | CAC | Can it grow? |
|---|---|---|---|---|---|
| Referrals | $1,500 | Hard to grow on demand | |||
| Organic content | $3,150 | Grows slowly | |||
| Cold webinar | $1,633 | Grows with ad spend | |||
| VSL funnel | $1,967 | Grows with ad spend | |||
| Skool community | $2,500 | Grows with members |
Cheapest per client: Referrals at $1,500. Cheapest one you can grow with money: Cold webinar at $1,633.
CAC here = (money + hours × your hourly value) ÷ clients. Team costs are left out so channels compare evenly.
The cheapest channel you can turn up is the one that grows the business. If you want 10 more clients next month, only the channels that grow with ad spend can be bought.
Fill this in every month and never judge CAC only as one total. A $1,500 total can hide a $900 channel that is getting better and a $3,000 channel that is getting worse. Move money toward the cheapest channel you can grow, in steps, and check it again the next month.
7Payback: how fast a client pays back what they cost
CAC tells you what a client costs. Payback tells you how long you float that cost before it comes back. If a client pays you more than they cost on day one, you can grow as fast as you can find buyers. If not, your bank balance sets your speed.
Profit kept = cash × (100% minus delivery cost).
Worked example: the same client, two payment plans
| Plan | Day one profit | Still to earn back | Payback |
|---|---|---|---|
| $3,000 down, then 3 × $1,000 | $3,000 × 70% = $2,100 | None, $2,100 is more than $1,571 | Day one |
| $1,000 down, then 5 × $1,000 | $1,000 × 70% = $700 | $1,571 − $700 = $871 | 2 months ($700 a month) |
Same price, same CAC. The first plan lets Maya buy her next client with this client's money. The second makes her wait two months for every client she adds.
New campaigns also pay back late at the start. Operators report spending over $20,000 before the first sale on a new $6,000 offer, with CAC settling near $3,000 over the next two and a half months. Plan the cash for that first stretch before you launch.
8Can cold traffic pay for itself?
These are real cold traffic campaigns we ran. They are not typical, and they are not a promise of yours.
The new offer had no warm audience behind it. The webinar did the warming up and the calls did the selling. On the 36.96x webinar the ad bill was the small number. The money was made after the click, in the webinar, the booking step and the calls. Sources: Cashflow Coaches, the 60-day launch timeline and Cashflow Coaches results.
Run it on your numbers
Your return on ad spend, from the calculator above.
| Measure | The maths | You |
|---|---|---|
| Revenue this month | new clients × price | $42,000 |
| Return on ad spend | revenue ÷ ad spend | 7.0x |
| Return on all costs | revenue ÷ total cost | 3.8x |
| Break-even CAC | the most one client can cost before you lose money on the first sale (price × your margin after delivery) | $4,200 |
Break-even uses the delivery cost from the payback calculator.
9The 10 leaks that push CAC up
Each leak pushes up one number in the calculator. Find the number that looks worst in your month, then the leak behind it. If none of these fits, find the exact bottleneck in your business.
| Leak | Number it pushes up | Fix this week |
|---|---|---|
| Only ads are counted | Hides real CAC | Add team pay, tools and other marketing to the calculator. |
| New leads wait more than 5 minutes | Cost per booked call | Text within 2 to 3 minutes and call within 5 to 7. |
| No questions on the booking page | Cost per shown call | About three typed questions that sales and marketing both agree on. |
| Calls booked a week or more out | Show rate | Open only the next 2 to 3 days. |
| No reminders | Show rate | Text and email 24 hours and 1 hour before, plus a calendar invite. |
| No-shows left alone | Cost per shown call | Send the rebook text below within 24 hours. |
| Sales calls never reviewed | CAC, through close rate | Review two recorded calls a week. |
| No follow-up after "not yet" | CAC, through close rate | Follow up for at least 2 weeks. |
| No cost per booked call by ad | Cost per lead | Tag every booking with the ad it came from. |
| Price too low for the ad cost | CAC as % of price | Raise the price or the cash up front until CAC is under 35% of it. |
10Worked example: Maya, start to finish
Maya is made up. Example only, not a client result.
| Line | The maths | Result |
|---|---|---|
| Total cost | $6,000 + $1,000 + $3,500 + $500 | $11,000 |
| Cost per lead | $11,000 ÷ 400 leads | $27.50 |
| Cost per booked call | $11,000 ÷ 50 calls | $220 |
| Calls that showed | 50 × 70% | 35 |
| Cost per shown call | $11,000 ÷ 35 | $314 |
| New clients | 35 × 20% | 7 |
| CAC | $11,000 ÷ 7 | $1,571 |
| CAC as % of price | $1,571 ÷ $6,000 | 26%, amber |
| LTV:CAC | 3 in 10 clients renew for $6,000, so LTV is $7,800. $7,800 ÷ $1,571 | 5.0x |
Then Maya fixes two steps. She adds reminder texts and a confirmation video, and her show rate goes from 70% to 80%. She starts reviewing two recorded calls a week, and her close rate goes from 20% to 25%. She doesn't touch her ads.
- 50 calls, 35 showed
- 7 new clients
- 26% of price, amber
- 50 calls, 40 showed
- 10 new clients
- 18% of price, green
Same $11,000. Three more clients is $18,000 more revenue in the month, with no extra ad spend.
11Copy these: your weekly numbers message and a rebook text
Send this to your team every Monday, or to yourself if it's just you. It fills in with your numbers from the calculator. To have Claude read it and pick the fix, get the weekly KPI review skill.
Numbers for last month: Spent: $6,000 ads + $1,000 marketing + $3,500 team + $500 tools = $11,000 Leads: 400 Cost per lead: $27.50 Booked calls: 50 Cost per booked call: $220 Showed: 35 of 50 (70%) Closed: 7 of 35 (20%) New clients: 7 CAC: $1,571 CAC as % of price: 26% Biggest leak this week: [show rate / close rate / lead cost] One fix we try this week: [write it here] Who owns it: [name]
When someone misses a call, text them inside 24 hours. Keep it short and easy to answer.
Hey [first name], it's [your name]. Looks like we missed each other today, no stress. I've got [day] at [time] or [day] at [time]. Which one works better?
Hey [first name], quick reminder: we're on at [time] today. Here's the link: [link]. Have your numbers handy and we'll make it worth your time.
12Do this tonight
One month of numbers, about 45 minutes.
- Open your bank and your ad account. Add up last month's ad spend, other marketing, team pay and tools. (15 minutes)
- Count leads, booked calls, calls that showed and new clients for the same month. (10 minutes)
- Put them in the calculator. Write down your CAC and its % of your price.
- Find the step that costs the most in the step table, then the leak behind it in the leak table.
- Fill in the channel table and the payback tool. Copy both.
- Copy the Monday numbers message and send it to your team, or save it for yourself.
- Bring your numbers to your call, and we'll go through them line by line. First, see if you qualify.
Find the exact bottleneck in your business
Frequently asked questions
What is client acquisition cost?
Client acquisition cost (CAC) is the total amount you spend to win one new paying client. It counts ads, other marketing, your sales team and your tools, not just the ad bill.
How do you calculate client acquisition cost?
Add up everything you spent to get clients in one period: ads, other marketing, setters and closers, and tools. Divide it by the number of new clients you won in that same period. For example, $11,000 spent in a month that brought in 7 new clients is a CAC of about $1,571.
What is a good client acquisition cost for a coach?
Compare CAC to your price, not to someone else's CAC. Under 20% of the price is healthy, 20% to 35% works but is thin, and over 35% means you are paying too much for each client. If clients pay you again later, aim for lifetime value of at least 3 times CAC.
What is a client acquisition system?
A client acquisition system is the full path a stranger takes to become a paying client: the ads or content that bring them in, the funnel page, the follow-up emails and texts, the booking step, and the sales calls. Each step has its own cost and its own drop-off, which is why CAC is shaped by every step, not just the ads.
What are the 5 stages of a sales funnel?
For a coach selling on calls, the five stages are: lead, booked call, shown call, closed client and paid client. This calculator gives you the cost at each stage, so you can see exactly where the money leaks.
Are webinars still effective in 2026?
Yes, when the numbers behind them are tracked. One brand new offer went from $0 to $1,230,101 in 60 days on cold traffic webinars, and one webinar returned 36.96x on ad spend ($326,552 in revenue on $8,836 of ads). These are real results, but they are not typical.
How much does a webinar funnel cost?
There are two costs: the build and the ad spend. A done-for-you build from Cashflow Coaches is a one-time five-figure install. Ad spend is separate and paid from your own ad account, from about $150 a day. The full breakdown is on the webinar funnel cost page.
Founder of Cashflow Coaches and a two-time Skool Games winner. His team builds client acquisition systems for coaches and experts, and tracks the same numbers this calculator uses: ad spend, calls, show rate, close rate and cash. More about Anshjeet.
Bring your numbers to the call.
We look at your offer and your CAC and find the step that leaks the most. If you're not a fit, we tell you what to fix first.
Book your callKeep reading: Client acquisition cost guideLifetime value calculatorROAS calculatorCase study: Karl YombomWhat is ROAS?Sales funnel builders compared
Maya is a made-up example. Her numbers show how the maths works and are not a client result or a benchmark. The green, amber and red bands are our own lines, set against price. Every real result on this page is a past result from a specific client. None of them is typical or a promise of what you will make. Your results depend on your offer, your price, your ad spend and your sales team.