Most founders track the wrong numbers. They celebrate ROAS. They screenshot revenue. They ignore the one number that actually tells the truth: profit before tax. This lesson fixes that in one read.
You probably already know your revenue.
But do you know your gross profit margin? Your POAS? Your cash runway right now, today?
If not, you are flying blind. And flying blind is fine until it is not.
Here is the thing. Top 1% founders are not better at running ads. They are better at reading their business. They know seven numbers cold. They check them Monday and Friday. And when something moves, they know exactly where to look.
That is the skill we build in this lesson.
Start with gross profit. Everything else follows.
Revenue is what comes in. Gross profit is what is left after you pay for what you sold.
Sell a product for R400. It cost you R100 to make or source. Gross profit is R300. Gross profit margin is R300 divided by R400. That is 75%.
That 75% is the money available to cover everything else. Your marketing. Your team. Your rent. Your software. Your refunds. Your mistakes. And hopefully some profit at the end.
If that percentage is too low, nothing else works. You are trying to build on foundations that cannot hold weight.
The minimum for a bootstrapped business: 50% gross profit margin. Top 1% founders often run at 60%, 70%, even 85%. That is how they have room to test, to hire, to weather a bad month, and still hit their profit targets.
Here is a real example from the chapter. A founder selling electronics at 20% gross margin is making R200 on a R1,000 sale. Sounds fine. But once you subtract ad spend, payment fees, shipping, and fixed costs, that R200 evaporates. They are confused why it feels so hard. The margin is the reason.
Markup is not the same as margin
300% markup on a R100 product sold for R400 sounds like great margins. But gross profit margin is 75%, not 300%. Always think in margin terms, not markup terms. Margin tells you what portion of every sale is available to cover expenses. Markup just tells you what you added on top of cost. Different thing entirely.
From gross profit down to profit before tax
This is the cascade most founders never see clearly.
Revenue to Profit — R2M/month base
Where the money actually goes
Top 1% — 15 to 20% PBT
R300k – R400k
profit before tax per month
Most founders — 7 to 10% PBT
R140k – R200k
profit before tax per month
Same R2M revenue. Same hustle. The difference is gross profit margin and cost structure — not ad spend.
Start at R2M in revenue. With 50% gross profit margin, you have R1M in gross profit. Now pay your operating expenses: marketing, team, software, shipping, returns. If those total R1.3M, you have R700k left. But if they total R1.6M, you only have R400k left. The difference is your profit before tax band.
Top 1% land at 15 to 20% PBT. On R2M revenue, that is R300,000 to R400,000 a month before SARS takes a cent.
Most founders land at 7 to 10% PBT. Same R2M revenue. Same hustle. But they keep R140,000 to R200,000. Half the life on the same revenue.
The gap is not marketing. It is cost structure and margin discipline.
ROAS is the most romanticised number in business
Everyone brags about ROAS. Return on ad spend. Spend R10k, make R50k back, that is 5X ROAS. Sounds great.
But ROAS tells you nothing about profit.
We had a client at V8 delivering 6X ROAS. They cancelled. Turns out they needed 8.5X just to break even. Their gross profit margin was 30%. The ad performance was meaningless until we understood the margin underneath it.
Here is the breakeven ROAS formula: 1 divided by your gross profit margin. If your margin is 50%, your breakeven ROAS is 2X. That just means you are not losing money on ads. It does not mean you are profitable.
For 20% PBT at 50% gross margin, you need 3.33X ROAS. For 15% PBT: 2.86X. For 10%: 2.5X. The target is not a flat number. It is calculated from your margin.
POAS is the number that actually tells you the truth
POAS. Profit on ad spend.
You take revenue from ads, subtract the cost of goods, subtract ad spend, subtract all other operating expenses, divide by ad spend. What you get is how many rands of profit you make for every rand spent on marketing.
Top 1% founders run at R0.50 to R1.00 POAS. That means every rand they spend on ads returns 50 cents to one rand in actual profit. That is the number to manage, not ROAS.
ROAS is a marketing metric that makes agencies look good. POAS is the business metric that tells you if you are actually winning. Track both. Make decisions on POAS.
Cash on hand. Not your bank balance.
Here is the one that trips up almost every founder in South Africa.
Your bank says R300,000. You feel fine. But you have not set aside VAT. You have not set aside tax. You have not accounted for the stock you need to restock.
Run the actual calculation. Bank balance minus VAT owed minus tax owed minus cost of goods to restock inventory. In the chapter example: R300k minus R40k (VAT) minus R25k (tax) minus R100k (restock). Real cash on hand: R135,000. Not R300,000.
That gap causes real pain at month end. You thought you had breathing room. You did not.
Cash runway is real cash on hand divided by monthly operating expenses. Target: three to four months minimum. Most founders have weeks, not months. That is why every small problem feels like a crisis.
A practical fix: open two extra bank accounts. One for VAT and tax. One for restocking. Transfer to them the moment money comes in. What is left in your main account is what you can actually spend. That one habit will save you from dozens of painful surprises.
The seven numbers. Check them Monday and Friday.
Weekly: ROAS, POAS, Blended CAC, Average Order Value, Conversion Rate, Cash on Hand, Cash Runway.
Monthly: Gross Profit Margin, Operating Profit Margin, Profit Before Tax.
That is it. No elaborate dashboards. No fifty metrics. One page. Two checks a week. One line next to any metric that missed target: why it missed, and what you will change this week.
Do that for one month. You will know your business better than you have in the entire time you have been running it.
Numbers are how you see reality clearly. They do not care how hard you worked. They just tell you what is actually happening. And the faster you can look at them without flinching, the faster you fix what is broken.
Next up: Lesson 5 covers finding and keeping customers. The numbers from this lesson become your targeting brief. Read Lesson 5 here.
Want someone to run these numbers for you?
We do this with clients every month. Gross profit audit, POAS setup, cash flow review. If you want a team that has done it 600 times, that is what we do.
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