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What are missed calls costing you?

When a call rings out or hits voicemail, most callers don't leave a message — they ring the next listing on Google. Enter a few numbers and we'll estimate what those missed calls are quietly costing your business every month.

Takes 20 seconds No email required Your numbers, honest math

A business phone connected to a booking calendar, showing missed calls becoming scheduled work

Your numbers

Average value of a job or booking

What a typical new customer is worth to you.

Calls you miss in a typical week

/wk

Rings out, hits voicemail, or comes in after hours.

Of those, how many would have booked?

A conservative guess keeps the estimate honest.

Estimated leak

Leak Level Medium

$0 /month

That's roughly $0 a year walking past the business.

Want this as a tailored breakdown?

Pop in your details and John will send a plain-English breakdown for your business — and can walk you through it on a free 15-minute call. No pressure.

01 The method

How this is calculated

The formula

Monthly cost = missed calls a week × 4.33 × share who would have booked × average job value

Yearly cost = monthly cost × 12

4.33 is the average number of weeks in a month: 52 weeks divided by 12 months. Everything else comes from you.

The result is revenue walking past the business, not profit. It doesn’t take off what the work would have cost you to do, and it only counts the first job, not repeat work or referrals from a customer you never got.

The figures the calculator opens with ($450 a job, 10 missed calls a week, 1 in 3 who would have booked) are placeholders to show how the sum works. They are not an industry average, and we don’t know of a reliable published one for Australian small businesses. Replace them with your own.

Where to find your own numbers

Missed calls a week: Your mobile or business phone system’s call log. Count an ordinary week, including calls that rang out, went to voicemail or came in after hours.
Calls from Google: If customers find you on Google Maps, the Calls figure in your Business Profile performance report counts how many times someone tapped the call button on your listing (Google’s definition of each metric). It shows demand, not whether anyone picked up, so use it as a cross-check on your call log.
Average job value: Total invoiced over the last three months divided by the number of jobs, from your accounting or job-management software.
Share who would have booked: The hardest number to know. If you track how many enquiries turn into jobs, use that. If you don’t, choose the lowest rate you would still defend. The calculator goes down to 1 in 5.

02 Worked examples

Two businesses, run through the same sum.

Hypothetical worked example — not a client case study.

Trades

A two-person plumbing business

Both plumbers are on the tools most of the day. Calls that come in while one is under a house and the other is driving between jobs ring out, and a caller who doesn’t get through can ring the next plumber on Google in seconds.

8 missed calls a week × 4.33 × 25% (1 in 4) × $450 a job

≈ $3,897 a month

About $46,764 a year.

Revenue, not profit. Materials and time still come off the top, and repeat work from those customers isn’t counted.

Hypothetical worked example — not a client case study.

Clinics

A two-practitioner physio clinic

One receptionist covers the front desk. While a patient is being checked in or paying, the phone rings through to voicemail, and someone looking for an appointment this week may not wait for a callback.

12 missed calls a week × 4.33 × 33% (1 in 3) × $110 a job

≈ $1,886 a month

About $22,634 a year.

This counts the first appointment only. If new patients usually book a course of treatment, enter the value of a typical new patient instead and the figure rises.

03 Before you trust the number

Common questions about the calculator.

How accurate is this estimate?

It is only as accurate as the three numbers you put in, and it measures revenue, not profit. The booking rate is where you allow for calls that were never going to be work, such as suppliers, spam or existing customers chasing a job. Use your own call log and job records, pick a booking rate you would defend, and treat the result as a way to size the problem rather than a forecast.

What counts as a missed call?

Any call from a potential customer that did not reach a person: it rang out, went to voicemail, came in after hours, or hung up on hold. Your mobile or business phone system call log usually shows them. If people find you on Google, the Calls figure in your Business Profile performance report shows how often someone tapped to call from your listing, though not whether you answered.

What can I do about the calls I'm missing?

Start with the cheapest fix that works. A same-day callback routine, a voicemail greeting that says when you will ring back, or diverting calls to someone in the office may be enough. If calls regularly arrive while everyone is on the tools or with patients, an AI voice agent can answer, take the details and book the job or pass on a message. Lumomatics sets these up from $349 a month plus setup. You can hear one by calling the demo line on 03 5910 1919.

How the voice agents work →