Your max cost per customer = lifetime value ÷ 3. A customer should be worth at least three times what you pay to win them.
Your monthly budget = max cost × new customers you want. Divide by 30 for your daily spend.
Then give the platforms 60 days. Meta needs roughly 50 conversion events a week to optimize; judging ads in week one is like judging a gym membership after one workout.
Or skip the math: run your numbers in the free calculator — it has presets for med spas, HRT clinics, behavioral health, gyms, and more.
Step oneStop thinking about the first sale
The single most expensive mistake in small-business advertising is valuing a customer at their first transaction. A $350 Botox appointment looks like a $350 customer — so when ads cost $200 per new patient, the owner panics and shuts everything down.
But that patient comes back five times a year. For three years. That is a $5,250 customer, and paying $200 to acquire them is one of the best trades available in business. This number — everything an average customer pays you across the whole relationship — is Customer Lifetime Value (LTV), and it is the foundation every other number is built on.
Average sale × purchases per year × years they stay = LTV
$350 visit × 5 visits/yr × 3 years = $5,250. Behavioral health calculates insurance reimbursement × length of stay — per day for detox/residential, per week for PHP/IOP, months for outpatient.
LTV ÷ 3 = the most you should pay per new customer
The healthy benchmark is 3:1 — a customer worth at least three times what you paid. $5,250 LTV means you can spend up to $1,750 to win one customer and still be comfortably profitable.
Max cost × new customers wanted = monthly budget
Want 30 new customers and can pay up to $1,750 each? Your ceiling is $52,500/month. Most businesses spend well under their ceiling — which is the point: now you know the room you have.
Monthly budget ÷ 30 = daily ad spend
The number you actually type into Meta and Google. One warning: below about $30/day the platforms never gather enough data to optimize. Better to wait and start right than drip money in slowly.
Try it yourselfRun your numbers — free, 60 seconds, no jargon
Pick your industry, answer five plain questions, and watch your lifetime value, max acquisition cost, monthly budget, and daily spend calculate live. It includes presets for med spas, HRT clinics, concierge medicine, IV therapy, chiropractic, gyms, detox & residential treatment, PHP/IOP, and outpatient programs.
Step twoROAS — the number that tells you if it's working
Return on Ad Spend (ROAS) is the simplest health check in advertising: how many dollars come back for every dollar you put in. Spend $10,000, generate $30,000 — that is a 3× ROAS.
For health and wellness businesses, here is the honest scale:
- 3:1 to 5:1 lifetime ROAS — healthy growth mode. This is the target.
- Above 5:1 — sounds great, usually is not. It typically means you are underinvesting, and a competitor is happily buying the customers you are leaving on the table.
- Below 2:1 — danger zone. After cost of service, you are likely losing money on every customer.
The trap almost everyone falls into: calculating ROAS on first-transaction revenue. If you measure that $350 first visit against a $200 acquisition cost, the campaign looks barely break-even — when in lifetime terms it is returning 26×. Measure ROAS against lifetime value, or you will kill profitable campaigns and never know what you lost.
The businesses that win at paid advertising are not the ones with the biggest budgets. They are the ones who know their numbers — and therefore stay in the game long enough for compounding to work.
Step threeThe learning phase — why ads "don't work" for impatient people
This is the part nobody explains, and it is responsible for more wasted ad spend than any targeting mistake ever made.
When you launch a campaign, Meta's algorithm enters a learning phase: it tests audiences, placements, and creative combinations to figure out who your buyers actually are. During this period results are unreliable, costs run high, and delivery is inconsistent. That is not failure — that is the system working as designed.
The 50-conversion rule
Meta exits the learning phase once an ad set records roughly 50 conversion events in a week. Google's Smart Bidding needs a similar volume — typically 30 to 50 conversions a month — before it bids efficiently. Below those thresholds, the algorithm is guessing, not optimizing.
Here is the catch for service businesses: if your conversion event is "became a patient," you may never hit 50 a week. The fix is to track an earlier, higher-volume funnel action as your conversion — a form fill, a click-to-call, a booking page view. More weekly signal means the algorithm learns faster, exits learning sooner, and your cost per result drops. The calculator above checks this automatically: enter your monthly client goal and it tells you whether you clear the threshold or need an earlier tracking event.
The 60-day window
Judging ads in week one is like judging a gym membership after one workout. The owners who lose money on ads are almost never the ones with bad products — they are the ones who quit during the learning phase, right before the machine started working.
Putting it togetherThe whole picture in one paragraph
Know what a customer is worth across their lifetime. Cap your acquisition cost at a third of that. Multiply by your growth goal for your monthly budget, divide by thirty for daily spend. Make sure your conversion tracking generates enough weekly events for the algorithms to learn. Then hold steady for sixty days while the system finds your buyers. That is the entire game — and the reason it fits in a 60-second calculator is that none of it is complicated. It is just math most businesses have never been shown.
Now you know the math. Want someone to actually run it?
PELORA builds and runs the ads — you watch the customers show up. Or start with the calculator and see your numbers first.
Run My Numbers — Free → Book a CallQuick answersQuestions owners actually ask
How much should I spend on ads per month?
Anchor it to what a customer is worth — not a random percentage. A customer should be worth at least 3× what you pay to win them. Take your lifetime value, divide by 3 for your max cost per customer, multiply by how many new customers you want a month. That is your budget. Most growth-mode health and wellness businesses land at 5–10% of gross revenue. The free calculator does this in 60 seconds.
What is customer lifetime value and how do I calculate it?
Everything an average customer pays you over the whole relationship — not just the first sale. Average sale × purchases per year × years they stay. A $350 med spa visit, 5× a year, for 3 years = $5,250. Behavioral health programs calculate insurance reimbursement times length of stay instead — per day for detox and residential, per week for PHP/IOP, months for outpatient.
What is a good ROAS for a health and wellness business?
3:1 to 5:1 lifetime ROAS is healthy growth mode. Above 5:1 usually means underinvesting — a competitor is buying the customers you are not. Below 2:1 you are likely losing money after service costs. Critical: calculate it on lifetime value, not first-transaction revenue, or profitable campaigns will look like failures.
What is the Meta ads learning phase and the 50-conversion rule?
When a campaign launches, Meta tests audiences and creative to learn who converts — results are unreliable and costs high during this period. It exits learning at roughly 50 conversion events per ad set per week. Below that, the algorithm guesses. Fix: track an earlier, higher-volume funnel action (form fill, call click, booking page view) instead of only the final sale.
How long should I run ads before judging results?
60 days. Days 1–14 the platform is learning and results look bad — normal, do not touch it. Days 15–45 first real signal. Day 60+ the data is trustworthy. Major edits restart the learning clock, so panic-editing in week one is the most expensive mistake in paid advertising.
Is there a free ad budget calculator for med spas and clinics?
Yes — the free PELORA Ad Spend Calculator has presets for med spas, HRT clinics, concierge medicine, IV therapy, chiropractic, gyms, detox & residential treatment, PHP/IOP, and outpatient. It shows your LTV, max acquisition cost, monthly budget, daily spend, ROAS, and whether your goal clears Meta's learning threshold. Built in Newport Beach, California.
Last updated June 11, 2026. By Preston Durnford. Newport Beach, California.