Guides / Partner and CFO brief
How to make the case for a growth system to your partner or CFO
By Jean-Michel Moreau, founder, Rapid Product Growth
Updated Nov 2026 · 7 min read
Short answer
Send one page that covers five things: the problem in numbers, what gets built, what it costs to win a client, the risks and how they’re handled, and what you’ll track every week. The core math: a $35k contract at a 40% gross margin leaves $14,000 of gross profit, and ad spend per new client is about $2,800 to $4,200 at an assumed close rate.
The growth system brief to copy
Paste these eight lines into an email to your partner, CFO or board. Each line is explained further down this page.
Copy this brief
- The problem: our new business depends on referrals and on me, and we can’t turn it up when a big project ends.
- The fix: a second pipeline we control. An offer for buyers who don’t know us, Meta or LinkedIn ads, SDRs who call every lead within 5 minutes, and ongoing sales training on every recorded sales call.
- What a client is worth: a $35k contract at a 40% gross margin leaves $14,000 of gross profit to pay for winning it.
- What a client costs in ad spend: about $850 per held sales call, so $2,800 to $4,200 per new client if 20 to 30% of held calls close. That close rate is an assumption we’ll replace with our own.
- Typical ad budget: about $10,600 a month, typically $9,200 to $12,200. Fees are separate and come out of the same $14,000.
- Timing: first booked call in about a week, first held calls in 14 to 30 days, and 120 days to judge it on data.
- Risk: a written guarantee, we own the ad accounts and data, and part of the fee can move onto new deals.
- Every week we’ll see: ad spend, booked calls, show rate, cost per held call and deals opened.
The referral problem in numbers
Referral selling looks free, but it’s paid for in founder time and business development salary that never shows up as a marketing line.
Price it the way a CFO would. 10 hours a week of founder time, valued at $300 an hour, over 48 weeks, is $144,000 a year. Add a business development person or AE helping with referrals, at about $156,000 a year fully loaded (an assumption), and the total is $300,000. If that brings in 5 deals, each referral sale costs $60,000. Founder time alone is $28,800 per sale.
The cost isn’t the only problem. Nobody can decide to make more referrals. That’s the point to make to a partner who says “referrals have always worked”: they did, at a size the network could feed. Run your own numbers in the referral cost calculator.
- “we rely a lot on referrals. ... But of course, referrals are a bit unreliable and inconsistent.”
- “that’s the problem. It’s kind of a roller coaster. Sometimes it’s more, sometimes it’s less. So it’s lumpy.”
Founders of custom software firms, RPG discovery calls, Oct to Nov 2026.
What the growth system builds
The growth system builds a pipeline from ad to signed client: an offer for cold buyers, ads, a qualifying filter, SDR follow-up and a sales call that gets better every week.
Your partner will want to know what is being paid for. It’s one chain: the offer, Meta or LinkedIn ads chosen by cost per customer, qualifying questions before anyone books, SDRs who call every lead within 5 minutes, and an expert sales trainer who reviews every recorded sales call. If one link is missing, the whole thing underperforms, which is why most past attempts failed.
- AOffer rebuilt for cold buyers
- BMeta or LinkedIn ads
- Fit?The application checks role, revenue and deal size. If yes, continue to C.
- If no: Not a fit
- CBook a call2-minute video and book-a-call page
- DSDR calls within 5 minutes
- ESales callYou take it. It gets recorded.
- Feedback loop with step E: Expert sales trainerReviews the recorded call. Feedback goes into the next one.
- FSigned client
What it costs to win a client
Compare the cost of winning a client to the gross profit the client brings, not to the contract revenue: $14,000 of gross profit against about $2,800 to $4,200 of ad spend at an assumed close rate.
This is the table a CFO wants. The close rate is assumed, because it depends on your sales call. Fees and sales time also come out of the $14,000.
| Line | Value | Where it comes from |
|---|---|---|
| Contract value | $35,000 | Example. Our minimum contract value. |
| Gross margin | 40% | Example. Use yours. |
| Gross profit to pay for winning the client | $14,000 | $35,000 × 40% |
| Ad spend per held call | ~$850 | RPG median, typically $780 to $1,020 |
| Held calls per new client | 3 to 5 | Assuming 20 to 30% of held calls close |
| Ad spend per new client | $2,800 to $4,200 | 3 to 5 × $850 |
| If only 10% close | ~$8,500 | 10 held calls × $850 |
Risks, and how they’re handled
A partner or CFO will raise four risks: the price, a past agency that failed, that it might not work, and losing control. Each one has a concrete answer.
- “It costs as much as a senior hire”
- Judge it as cost per client, not as a monthly line next to a salary. The hire you can afford at this stage usually can’t build a pipeline that doubles the business. One who could would be very expensive.
- “We’ve been burned before”
- Ask where the chain broke last time: the offer, the message, the follow-up, or nobody calling the leads. The platform is rarely the cause. Then check each link in Fig. 1.
- “It might not work”
- There’s a written guarantee, and the first 120 days are judged on weekly numbers, not faith.
- “We’ll lose control”
- You own the ad accounts and the data from day one.
- “Cash is tight”
- Part of the fee can move onto new deals, so more of it is paid as clients sign.
- “So at this moment, it’s a haze, a maze of guys like you telling me that they’re going to make me rich.”
- “every month I was spending around three to four grand, right? ... we ran it for six months. We got leads, we got it, but leads, they don’t join”
Founders of an ERP software company and a CRM and AI consulting firm, RPG discovery calls, Oct to Nov 2026.
What to measure every week
Track six numbers every week: ad spend, cost per lead, cost per booked call, show rate, cost per held call and deals opened.
Give your CFO the same view you get. The first month is the most expensive: in the funnels we run, cost per booked call fell by a median 43% after the first month. Cost per held call is the number to manage to, because it’s the one closest to revenue.
| Metric | Typical | What it tells you |
|---|---|---|
| Ad spend | About $10,600 a month | Whether budget is on pace |
| Cost per lead | About $180 ($150 to $200) | Whether the offer pulls the right buyers |
| Cost per booked call | About $620 ($500 to $910) | Whether qualifying and SDR follow-up work |
| Show rate | About 2 in 3 (64%) | Whether the show-up sequence works |
| Cost per held call | About $850 ($780 to $1,020) | The number to manage to |
| Deals opened and closed | Yours | Your real close rate, replacing the assumption |
Typical numbers
$14,000
Gross profit per client
At a $35k contract and 40% margin.
$2,800 to $4,200
Ad spend per new client
Assuming 20 to 30% of held calls close.
About $850
Ad spend per held call
Typically $780 to $1,020.
64%
Show rate
About 2 in 3 booked calls happen.
Questions a CFO will ask
What does it cost to win one new client?
In ad spend, about $2,800 to $4,200 per new client, assuming 20 to 30% of held calls close. That comes from about $850 per held call, the median in the dev-shop and software funnels we run. Fees come on top and are set out in your growth plan. Both come out of the $14,000 of gross profit a $35k, 40%-margin client brings.
What if our close rate is lower than 20%?
Then each client costs more. At 10%, you need about 10 held calls per client, roughly $8,500 in ad spend. That’s why an expert sales trainer reviews every recorded sales call and gives feedback before the next one: the close rate on held calls matters as much as the cost per call.
Who owns the ad accounts and the data?
You do. The ad accounts, the audiences and the lead data belong to your company from day one. If you ever stop working with us, the pipeline’s history stays with you, and so does everything it learned.
How soon will we see numbers we can judge?
The first booked call typically comes in about a week, and first held sales calls take place in 14 to 30 days. Cost per held call shows up in the weekly numbers from there. Plan on about 120 days to judge the growth system on cost per client.
We were burned by an agency before. Why is this different?
Most failed campaigns broke at one link: an offer cold buyers didn’t want, no filter, slow follow-up or nobody calling the leads. This growth system covers every link, from the offer to an SDR calling within 5 minutes to the review of every recorded sales call. And there’s a written guarantee.
Why not hire a marketing person instead?
A hire makes sense once you have a proven playbook to hand them. Before that, the person you can afford usually hasn’t built a pipeline that doubles a business. We compare the options in lead-gen agency, marketing hire or a growth system.
Sources and method
- RPG funnel data: dev shops and custom software firms we run funnels for, plus our own funnel. Dec 2025 to Oct 2026. Medians and middle 50%.
- Close rate is not a statistic. The tables assume 20 to 30% of held calls close, labelled as an assumption. Contract value and margin are examples.
- Referral cost: 10 hours a week × 48 weeks × $300 an hour of founder time, plus an assumed $156,000 a year for a fully loaded BD or AE, ÷ 5 deals. Illustrative.
- Quotes: RPG discovery calls, Oct to Nov 2026. Anonymized, labelled by role.