What does a missed call actually cost a trade business?
Work out what your missed calls cost from three numbers you already have, with the arithmetic shown and what the total leaves out.
A missed call costs you the job behind it, multiplied by the chance you would have won that job if you’d picked up. You can put a dollar figure on it with three numbers you already have: how many calls you miss in a week, what a typical job is worth to you, and how many of the people you do talk to end up booking. Multiply the three and you get what the missed calls are worth in a week. Multiply that by 52 and you have the year.
Nobody else’s average can give you that figure, because nobody else has your phone. So this post skips the industry numbers and shows you the arithmetic, a worked example, a calculator to put your own numbers in, and the things the sum leaves out. Those last ones matter as much as the sum.
The three numbers you need
Calls you miss in a week
Open the recent calls on your phone and scroll back through the last full week. Count the missed calls, once per number. A customer who rang three times on Tuesday afternoon while you were in a crawlspace is one missed call, not three.
Leave out the ones you know were nothing: your supplier, your brother, the robocall about your car’s warranty. If you don’t recognize a number and it didn’t leave a voicemail, count it. That’s the caller you can’t judge, and some of those were people with a job for you.
If your phone doesn’t keep a full week, count the days it does keep and scale up.
Your average job
Use a typical invoice, not your best one. A plumber who spends most days on drains, faucets and running toilets, with the odd water heater, should use the drain-and-faucet number. If your work splits into two very different kinds (service calls and full installs, say), run the sum twice, once for each.
How many callers you’d win
Of the people who get through to you and ask about a job, how many book? If you talk to ten and land four, that’s 40 percent.
This is the number people inflate. Plenty of callers are collecting three quotes, want a price over the phone, or turn out to be outside your area. If you don’t know your number, track it for a month: write down every inquiry and whether it booked. A simple status on each lead does the job, and keeping every lead in one list makes it easy to count.
A worked example
The numbers below are made up to show the arithmetic. They are not an average for any trade.
Say you miss 4 calls a week, your average job is $500, and you win 1 in 4 of the callers you talk to (25 percent).
- 4 missed calls times 25 percent is 1 job a week you’d likely have won.
- 1 job times $500 is $500 a week.
- $500 times 52 weeks is $26,000 a year.
- $26,000 divided by 12 is about $2,167 a month.
Here’s the same sum as a calculator, with those example numbers filled in. Change them to yours.
The full missed-call calculator opens with the same numbers filled in, prints the working line by line, and keeps your three numbers in the page address, so you can send the link to a partner or your bookkeeper and they see what you saw.
Same sum, three different businesses
To show how far the answer moves, here are three more made-up businesses run through the same arithmetic. Again, these are examples, not averages.
| Example business | Missed a week | Average job | Win rate | Per week | Per year |
|---|---|---|---|---|---|
| One-truck plumber | 5 | $300 | 40% | $600 | $31,200 |
| Heating and air company, summer weeks only | 10 | $450 | 30% | $1,350 | $16,200 over 12 weeks |
| House cleaner | 3 | $200 | 50% | $300 | $15,600 |
The heating and air row is there because a lot of trades are seasonal. A no-cool call at 3 PM in July is a different animal from a quiet week in March, so if your phone runs hot for part of the year, run the sum for the busy weeks on their own. A yearly average flattens the weeks when missing calls hurts most.
The house cleaner’s number is the most misleading of the three, for the reason in the next section.
What the sum leaves out
Repeat customers and referrals
The calculator prices one job. For a lot of trades the first job is the smallest one you’ll ever do for that customer. A cleaning client who books a deep clean and then has you back every other week is worth that first invoice many times over. The homeowner whose water heater you replaced calls you, not a search engine, when the toilet starts running next spring, and mentions you to the neighbor whose sump pump just quit.
So treat the yearly figure as a floor. If you want a rough feel for the bigger number without guessing at lifetime value, run the calculator a second time with the average job set to what a typical customer spends with you in a year.
Callers who ring back
Some of the people you miss will call again or leave a voicemail, and you’ll win some of those. That’s real, and it’s why the third number asks how many you’d win rather than treating every missed call as a lost job.
But you can’t see who went elsewhere. A missed call that never rings again looks exactly the same in your recent calls whether the person hired someone else, fixed it themselves or forgot about it. And the people most likely to wait for you tend to be the ones with the least urgent jobs. Someone with water coming through the ceiling at 9:40 PM is more likely to keep dialing down the list than to sit and wait for your callback.
If a good share of your missed callers do call back, lower your missed-calls number to count only the ones who never did. That’s the honest version of the sum.
Calls that were never jobs
Not every unknown number is a customer. Vendors, recruiters, robocalls, a customer asking whether you got their check, a wrong number: none of those belong in the count. That’s why it’s worth counting a week by hand once instead of trusting a call log total.
It’s also worth asking of any fix you look at: what does it do with the junk? Buildrok’s receptionist, for example, says goodbye and hangs up on sales pitches, robocalls, wrong numbers and silence, so those don’t land in your list of leads.
The time of day
The win rate isn’t the same for every call. Someone asking about a kitchen remodel can wait until tomorrow. A burst pipe, an outlet that’s sparking, or a house at 90 degrees with a newborn in it gets decided in the time it takes the caller to try the next number. If most of your missed calls come in after hours, or while you’re up a ladder with your hands full, your win rate on those calls (had you picked up) may well be higher than your overall average. Calls you miss while you’re on a job are their own problem, with their own fixes.
What it costs to catch them
The sum tells you what the calls are worth. Whether it’s worth paying to catch them depends on what the fix costs, and the right comparison is the monthly figure, not the yearly one. The calculator page does that comparison for Buildrok’s receptionist: it tells you how many jobs a month it would need to win back to pay for itself. The price itself is on the pricing page.
Why there are no industry statistics here
You’ll see figures quoted online about how many callers won’t leave a voicemail, or how many go straight to a competitor. I went looking for where those numbers come from and couldn’t find a study I could actually read. They get passed from one vendor’s blog to the next. So this post doesn’t use them, and neither does our calculator.
Your own recent calls are better evidence anyway. A week of your missed calls, counted honestly, beats any national average for deciding what to do about your phone.
What to do with the number
If the answer is small, say you miss one call a month and your jobs run $150, don’t spend money on it. Call back faster, and make sure your voicemail greeting tells people what to leave. Our comparison of an AI receptionist and voicemail covers when voicemail is enough.
If it’s big enough to matter, there are three common ways to get those calls answered: a human answering service, a virtual receptionist, or an AI receptionist. They differ in who picks up, what they collect, how they charge and where they fall short, and this side-by-side comparison lays them out fairly. If you want to understand what an AI receptionist actually does on a call before you weigh it up, start with what an AI receptionist is and how it works.
Each trade’s calls look different, too. The receptionist page for plumbers shows the questions it asks about leaks and what it treats as urgent, and there are versions for heating and air and house cleaners.
The next step is the same whatever you decide: count last week’s missed calls, put your three numbers into the missed-call calculator, and if the answer is worth acting on, book a demo with it in hand.