What Does a Missed Call Cost? A Simple Calculation

Missed calls never show up on an invoice, yet they are one of the most expensive things a business carries — because an unanswered call is usually a customer who went elsewhere. Here is a simple way to put a number on it.

How to run the numbers

You need three figures:

• Missed calls per day (say 5)
• How often a call becomes a customer (say 30%)
• Average value of a customer (varies by sector)

The formula: *missed calls × conversion rate × customer value.*

Worked example

A business missing 5 calls a day, converting 30% of calls, with an average customer worth $100:

• 5 × 0.30 = 1.5 customers lost per day
• 1.5 × $100 = $150 lost per day
• Roughly $4,500 a month in revenue never earned.

In sectors with high customer value — dental, auto service, real estate — the figure climbs far higher.

The costs you cannot see

• Someone who has a bad experience does not call again.
• Frustration spreads by word of mouth.
• If a call you paid for with advertising rings out, that ad spend is wasted too.

Getting the loss close to zero

With OZVA every call is answered: the AI receptionist picks up when you are busy, closed or asleep, books the appointment or logs the request, and files the record in your dashboard. Every call you earned — paid or organic — gets a chance to become revenue.