When to use the CPA calculator
CPA stands for cost per acquisition — what you pay to win one new patient. This tool is for your paid ads (Google Ads, Meta, and the like). It tells you whether the numbers add up at your current spend, and at what point they stop adding up.
It's not the right tool for SEO, where you pay once for content that keeps working for years. Use the ROI calculator for that.
What the inputs actually mean
Monthly ad spend — everything you spend on paid ads (Google, Meta, and any others). Leave out the cost of making the ads and any management fees — those are counted separately.
Qualified leads — enquiries that are actually worth following up: the right specialty, the right area, and real contact details. Not every form filled in, not every call. This matters because the cost of a raw enquiry and the cost of a genuine one can differ 2-3 times, and only the genuine ones turn into income.
Close rate — the share of qualified leads who become paying patients. This varies a lot by specialty and how well a clinic runs: routine dental 45-55%, IVF 28-38%, cosmetic surgery 32-42%, hospital cardiology consultations 18-28%, urgent care 70-85%.
Average patient value — use the middle figure from your last 6 months of patient revenue, not a plain average. Same reason as the ROI calculator.
How to interpret the output
True CPA — ad spend divided by patients booked. If you spend ₹4L a month, get 200 qualified leads, and 40% become patients, your true CPA is ₹4L ÷ 80 = ₹5,000. Compare it against what a patient is worth over their lifetime (not just their first visit) to see if it's worth it.
LTV:CAC ratio — what a patient is worth over their lifetime divided by what it costs to win them. Healthy is 3 to 1 or better. Tight is 2 to 1 up to 3 to 1. Under 2 to 1 doesn't work — cut your paid spend until it improves, then build back up slowly.
Payback window — how many months until a patient has paid you back more than they cost to win. Clinics usually aim for 3-12 months depending on specialty. Under 3 months: grow fast. 3-9 months: grow carefully. 9-18 months: hold steady. Over 18 months: check whether you're using the right mix of channels.
Common CPA pitfalls
Judging cost against the first visit instead of lifetime value. Paying ₹3,500 to win a patient worth ₹85K over time is great; paying the same for a patient worth ₹12K isn't. Same cost, opposite decision.
Counting every enquiry as a lead. Clinics that treat every form as a "lead" make their numbers look better than they are and hide the real cost. Counting only genuine leads gives you the honest picture.
Ignoring the seasons. Demand swings through the year (cancer awareness peaks in October-November, IVF picks up in January-February). A yearly average hides these swings. Check your CPA at least every quarter.
Chasing cheap clicks. A cheaper click doesn't always mean a cheaper patient — broad keywords are cheap to click but often convert poorly, so you end up paying more per patient. Aim for a low cost per booked patient, not a low cost per click.
What good looks like
Typical cost to win one new patient by specialty (booked patient, after a few months, averaged over 6 months):
- Routine dental: ₹450-1,500 per new patient
- Dental implants (procedure-stage): ₹3,500-12,000
- Primary care: ₹350-1,200
- IVF first consultation: ₹4,500-18,000
- Mental health (therapy session-booked): ₹1,200-4,500
- Cosmetic surgery (consultation-booked): ₹4,500-22,000
- Hospital cardiology consultation: ₹1,800-6,500
- International medical tourism (treatment-booked): ₹65,000-220,000
Clinics paying well above these numbers usually have one of two problems: they're losing patients along the way (replying too slowly, too many no-shows) or their channel mix is off (too much broad paid advertising, not enough SEO).
