🧮 CPA Calculator

The CPA (cost-per-acquisition) calculator is the right tool when you're optimising paid acquisition channels — Google Ads, Meta, programmatic. It tells you whether your unit economics are sustainable at current spend, and at what spend levels they break.

For organic / SEO channels, CPA isn't the right metric (the cost is one-time content investment that compounds). Use the ROI calculator for those.

Monthly ad spend — total spend across all paid channels (Google + Meta + programmatic + LSA). Don't include creative production or management fees here — those are separate cost components.

Qualified leads — inquiries that meet basic qualification criteria (right specialty, right geography, real contact info). Not all form fills, not all calls. The qualification gate matters because cost-per-lead and cost-per-qualified-lead can differ 2-3× and only the qualified number drives revenue.

Close rate — qualified leads that become paying patients. Healthcare close rates vary 15-65% by specialty and operational maturity. Routine dental: 45-55%. IVF: 28-38%. Cosmetic surgery: 32-42%. Hospital cardiology consultations: 18-28%. Urgent care: 70-85%.

Average patient value — use median trailing 6-month patient revenue, not mean. Same logic as ROI calculator.

True CPA — ad spend ÷ booked patients. If your ad spend is ₹4L/month, you generate 200 qualified leads, and 40% close, your true CPA is ₹4L ÷ 80 = ₹5,000. Compare against patient LTV (not first-booking revenue) to determine sustainability.

LTV:CAC ratio — patient lifetime value ÷ true CPA. Healthy: 3:1 or better. Marginal: 2:1-3:1. Unsustainable: under 2:1. Practices below 2:1 should reduce paid spend until ratio improves, then scale incrementally.

Payback window — months until accumulated patient revenue exceeds acquisition cost. Healthcare practices typically target 3-12 month payback depending on specialty. Below 3 months: scale aggressively. 3-9 months: scale carefully. 9-18 months: hold steady. Over 18 months: investigate whether the channel mix is right.

Measuring CPA on first-booking revenue instead of LTV. A ₹3,500 acquisition for a patient with ₹85K LTV is excellent; for a patient with ₹12K LTV is unsustainable. Same CPA, different decision.

Ignoring qualification gates. Practices counting all form submissions as "leads" produce inflated lead-volume metrics that hide real CPA. Qualified-lead-only counting is the honest version.

Not adjusting for seasonality. Healthcare specialties have strong seasonality (oncology rises October-November on awareness months; IVF rises January-February). Average annual CPA hides material variation. Track CPA quarterly minimum.

Chasing cheap clicks. Lower CPC doesn't always lower CPA — broad-match keywords with low CPC often have lower conversion rates that net out to higher CPA. Optimise for booked-patient cost, not click cost.

Specialty-specific CPA benchmarks (booked patient, post-engagement, 6-month average):

• 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

Practices significantly above these ranges have either operational leakage (intake response too slow, no-show rate too high) or channel-mix problems (over-reliance on broad-match paid, under-investment in organic).