What a missed call costs a contractor (and how to work out your own number)

A missed call costs you the number of calls you miss, times the share of callers who hire you, times what a typical job pays. Do that math for one week, then multiply by about 4.3 to get a month. The result is smaller than most marketing pages claim, and it is still real money.

Don't want to do it by hand? The free Missed Call Calculator does it with four numbers and takes about a minute.

I'm Liam. I run Advenar, a small agency in Tempe. Most owners I talk to can't say what the calls they miss cost them, so here is how to work it out yourself.

The formula

Three numbers:

1. Missed calls in a normal week. Calls from people who wanted work and didn't reach you.
2. Your booking rate. Out of 10 people who call and actually talk to you, how many hire you?
3. A typical job. What one ordinary job pays you, not your biggest.

Multiply them: missed calls x booking rate x job value = lost dollars per week. Multiply that by 52 and divide by 12 for a monthly figure.

Three examples

These are made-up numbers to show the math. They are examples, not data from real businesses.

HVAC. Say you miss 6 calls a week, 4 out of 10 callers hire you, and a typical job pays $450. That is 6 x 0.4 = 2.4 jobs a week. Over a month it works out to about 10 jobs, or roughly $4,680.

Plumbing. Say you miss 5 calls a week, 5 out of 10 hire you, and a typical job pays $300. That is 2.5 jobs a week, about 11 jobs a month, or roughly $3,250.

Lawn care. Say you miss 10 calls a week, 3 out of 10 hire you, and a typical job pays $80. That is 3 jobs a week, 13 a month, or roughly $1,040. A lawn customer who stays on all season is worth more than one visit, but I keep the math to a single job so I don't flatter the number.

Your numbers will differ, so your own count matters more than mine.

Why the honest number is smaller than what you've seen quoted

Plenty of pages treat every missed call as a lost job. I don't, and you shouldn't either.

• Some callers leave a voicemail and you call them back in time.
• Some were calling three shops and would have picked someone else anyway.
• Some were never going to hire you. Wrong town, wrong job, just a price check.

That is why the formula uses your own booking rate. If 4 out of 10 people who reach you hire you, I count missed callers at 4 out of 10 as well. It is a careful estimate and it can still be off in either direction, so the calculator also shows a range, with your booking rate one notch lower and one notch higher.

For a rough sense of how often calls go unanswered, CallRail's January 2025 small business benchmark report put home services at about 14% of calls missed (CallRail's report). That is one company's data from its own customers, so treat it as a starting guess and use your own count.

How to count your missed calls in two minutes

Open your phone's Recents (the call history). Pick a normal week, not your busiest one.

Go down the list and count every call from someone who wanted work, whether you answered or not. Skip family, suppliers and spam. Then count how many of those you never talked to, including the ones that went to voicemail. A rough count is fine.

To find your typical job, look at last month's invoices, add up what you were paid, and divide by the number of jobs.

What to do about it

I'm not going to pretend there's a magic fix. A few plain things help, and they cost nothing.

Call back fast. Someone with a dead AC or a leak is calling more than one shop. The first one who talks to them has the edge. If you can return calls within a few minutes on your next break, you win jobs you used to lose.

Text back. A short text from you ("Hi, this is Sam at Smith Heating, I'm on a job, can I call you at 12:30?") often gets an answer when a voicemail doesn't. Send it yourself, from your own phone.

Change your voicemail. Tell callers when you will call back. "I check messages at noon and 4" beats a generic greeting, because the caller knows what happens next and may wait for you.

Try these for two weeks, then count again and see if the number moved.

Work out your number

Grab your Recents list and put four numbers into the free Missed Call Calculator. It takes about a minute, there's no email to enter, and your numbers stay in your browser.

If the number turns out small, good. Keep it and move on. If it surprises you and you want to talk it through, call or text me at 323-799-0663.

Questions people ask

How much does a missed call cost a contractor?

It depends on three numbers: how many calls you miss, how often callers who reach you hire you, and what a typical job pays. In the HVAC example above, 6 missed calls a week adds up to roughly $4,680 a month. Your own figure could be well under or well over that.

Is every missed call a lost job?

No. Some callers leave a message and you reach them in time, and some were never going to hire you. That's why I only count missed callers at your own booking rate.

What counts as a missed call?

Any call from someone wanting work that you did not talk to, including calls that went to voicemail. Family, suppliers and spam do not count.