What are missed calls costing your business?
In an appointment-based business, many missed calls are appointments booked somewhere else. This calculator turns lost calls into euros — using your assumptions, not ours. An indicative calculation, with every number adjustable.
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Indicative lost revenue: €— / month
≈ €— per year · around — lost appointments per month
Indicative calculation: lost appointments = missed calls from potential customers × working days × share who never call back; revenue = appointments × average value. It does not count a customer’s lifetime value, nor the fact that many calls are not asking for an appointment — which is why this is an order of magnitude, not a measurement.
Why missed calls cost more than they appear to
The calculation above counts only the first lost appointment. It does not count the customer who would have come back every month for years, nor the recommendation that will now never happen. For a business with repeat customers — a hair salon, a physiotherapy clinic — the customer who “books somewhere else” once often stays somewhere else.
Most insidious of all are the calls you never even see: the ones that come in outside working hours. In the evening, when your own customers finish work and finally find time to phone, the line does not answer — and if it rings on a landline, in the morning there is not even a missed-call entry to remind you. See the detailed example of the cost of missed calls in a medical practice.
What you can do
You have three options: hire someone for the phone (see what a salaried receptionist costs), hand your calls to a traditional answering service for the hours it covers, or have an AI receptionist answer whatever you cannot get to — around the clock, on the number you already have, booking the appointments directly in your calendar.
Frequently asked questions
Is the calculation accurate?
It is indicative — and deliberately transparent. All four assumptions (missed calls from potential customers per day, average value, share who never call back, working days) are adjustable, so you can enter your own business’s real numbers. Watch the first one in particular: count only the calls that would have asked for an appointment, not routine calls, suppliers or spam. The goal is not an impressive figure; it is to see the order of magnitude.
How do I know how many calls I miss per day?
Your own phone keeps its missed calls — count a typical week and take the average. If you already forward calls to an AI receptionist, the counting happens automatically: every call lands in your dashboard.
Why do you suggest 40% as the share of customers who never call back?
It is the default we consider realistic for appointment-based businesses, where the customer has plenty of alternatives — change it freely. If your customers are loyal and almost always call again, drop it to 10–20% and see what remains: the number is usually still uncomfortable.
How do these calls stop being lost?
By someone always answering. An AI receptionist picks up whatever you cannot get to — busy line, peak hour, out of hours — converses in Greek and books the appointment in your calendar within the very same call.
Want to be the first to know when Parousa launches?
Parousa is an AI phone reception service that speaks natural Greek, for small businesses that run on appointments. Join the waiting list and we’ll let you know as soon as the first spots open up.
One email when it’s available — no spam.