ROAS: How to Calculate the Return on Clinic Ads
Quick facts
- Definition
- Return on Ad Spend: revenue generated divided by the amount invested in ads.
- Formula
- ROAS = revenue attributed to the ad ÷ ad spend.
- Different from
- ROI, which considers all costs and profit; ROAS looks only at revenue and media spend.
- Relevance in orofacial harmonization (HOF)
- Shows whether the ad pays for itself, but does not say whether the clinic made a profit.
ROAS stands for return on ad spend. It answers a direct question: for every real invested in paid media, how many reais of revenue came back? It is one of the most widely used metrics in paid traffic because it is simple to calculate and track.
How is it calculated?
The calculation divides the revenue attributed to the campaign by the amount spent on it.
| Item | Value (hypothetical example) |
|---|---|
| Ad spend for the month | R$ 2,000.00 |
| Revenue attributed to the campaign | R$ 10,000.00 |
| ROAS | 10.000 ÷ 2.000 = 5 |
A ROAS of 5 (or 5x) means that each R$ 1.00 invested generated R$ 5.00 in revenue. This is a hypothetical example; it does not represent a market average or a target.
Why is ROAS misleading on its own?
Because revenue is not profit. The calculation ignores the cost of materials, clinical hour cost, staff, taxes, card fees and other expenses. Two procedures with the same revenue can have very different margins, and a campaign with an apparently good ROAS can leave little or no profit.
That is why a mature reading of ROAS comes alongside the contribution margin. If the campaign's main procedure has a 30% margin, for example, a ROAS of 3 only covers the ad, leaving nothing over. This reasoning helps define the minimum ROAS for the campaign to be worthwhile, which is different for each clinic.
How does attribution complicate things?
In HOF, the patient's path is usually long: they see the ad, follow the profile, chat on WhatsApp, book the assessment and only close days later. Revenue may be attributed to the ad incompletely, and part of it comes from referrals or organic search that the ad only sparked. Measuring through the sales funnel, from lead to close, and through the conversion rate at each stage gives a more faithful picture than the isolated number.
What about advertising rules?
An ad's performance does not replace compliance with the rules. Pieces that promise results, nonstandard before-and-after images or a simulation presented as a result can create ethical and legal problems, even with a high ROAS. The page on misleading advertising covers this.
ROAS is also distinct from ROI, which considers all costs and measures profit on the investment, and from the average ticket, which measures the average value per patient.
Also called: return on ad spend.
Frequently asked questions
Does a high ROAS mean profit?
Not necessarily. ROAS ignores costs such as materials, clinical time, staff and taxes. A campaign with a good ROAS can leave little profit if the procedure's margin is low.