What missed calls really cost a contractor, worked out with your own numbers

Why most missed-call numbers online are useless

Search for missed-call statistics and you'll find confident percentages and dollar figures with no traceable study behind them. Some trace back to small vendor surveys from years ago. Others trace back to nothing. We don't use them, and you shouldn't plan around them.

What you can trust is your own data. Most business phone systems and carriers keep a log of inbound calls, whether each was answered, and how long it lasted. Your CRM or job records show how many jobs came from calls and what they were worth. Put those together and you have a number that's actually about your business.

The formula

The math has four inputs and three multiplications:

1. Inbound calls per week. Count calls from customers and prospects, not vendors or spam.
2. Share you miss. Calls that ring out or go to voicemail and aren't returned in time to matter.
3. Booking rate. Of the calls you do answer, the share that become a paid job.
4. Average job value. Total revenue from phone-sourced jobs divided by the number of those jobs.

Then:

• Missed calls per year = calls per week × share missed × 52
• Jobs those calls might have become = missed calls per year × booking rate
• Revenue at stake = jobs × average job value

Our missed-call calculator runs exactly this formula with sliders, so you can try your own numbers in a few seconds.

Worked examples with hypothetical numbers

These businesses are made up. The inputs are there to show how the arithmetic behaves, not to suggest what's typical for your trade.

Here is the first column written out. 30 calls a week × 20% missed = 6 missed calls a week. 6 × 52 weeks = 312 missed calls a year. 312 × 35% booking rate = 109.2 jobs. 109.2 × $450 = $49,140.

Notice the remodeler. Fewer calls and a low booking rate, but each job is large, so a handful of missed calls a week adds up to the biggest number on the table. In a high-ticket trade it's easy to underestimate missed calls, because the phone doesn't ring much in the first place.

What the estimate assumes, and where it's wrong

This is a ceiling-style estimate, not a forecast. Be honest with yourself about its assumptions.

• It assumes a missed caller would book at your normal rate. Some missed callers were never going to hire you: wrong number, price shoppers, someone outside your area. That pushes the real number down.
• It assumes missed callers don't come back. Some leave a voicemail and you win the job anyway. That pushes it down too.
• It ignores repeat and referral value. A first job can lead to years of maintenance work and referrals. That pushes it up.
• It treats all hours the same. Missed calls may bunch up at certain times, such as early mornings, lunch, evenings or the first warm week of spring. Those may be your most urgent and valuable calls.

A practical way to adjust is to cut the booking rate for missed calls in half and run it again. If the number is still worth acting on, act on it.

The marketing you already paid for

A missed call costs more than the job. Something made that phone ring: a truck wrap, a yard sign, a Google ad, a Local Services Ads lead, a postcard, a referral you earned over years. When the call goes unanswered, that spending produced nothing.

If you pay for leads or ads, you can put a number on this too. Take what you spent on a channel last month and divide it by the calls it produced. That's your cost per call. Multiply it by the calls you missed from that channel, and you have the marketing money that went straight to voicemail.

Track missed calls by source if your phone system allows it, using a separate tracking number for each paid channel on that channel only. You may find that one campaign produces lots of calls at hours nobody can answer. That's not a reason to cut the campaign. It's a reason to cover those hours.

This is part of why answering matters more as your marketing budget grows. Spending more to make the phone ring more, while missing the same share of calls, multiplies the waste.

Using the calculator step by step

The calculator starts with example inputs, so replace each one with your own.

1. Set inbound calls per week from your call log average over at least a month. Use a busy month and a slow month if your work is seasonal, and run it twice.
2. Set calls that go unanswered to your real missed share, after removing spam.
3. Set answered calls that become jobs from your CRM or invoice records.
4. Set average job value from phone-sourced jobs only, if you can separate them.
5. Read the yearly and monthly figures, then halve the booking rate and read them again for a conservative version.

If the conservative figure is more than the cost of a fix, the decision is easy.

Where to find your real numbers

1. Call logs. Most business phone systems and carriers show inbound calls with answered or missed status. Export a month and filter out known spam and vendors.
2. Voicemail and callback records. Count missed calls that got a callback within the hour. Those are partly saved.
3. Job records. In your CRM or invoicing system, count jobs where the lead source was a phone call, and total their revenue.
4. A two-week tally. If you don't have clean data, have whoever answers keep a tally sheet: answered, missed, booked. Two weeks gives you a rough baseline.

Don't forget the calls nobody logs. Customers who text your cell, message your Facebook page or fill out a form and then call because nobody replied are all part of the same picture. If those channels go unanswered too, the true gap is larger than the call log shows.

Look at when calls are missed, not just how many. If most missed calls happen between 5 and 8 p.m., the fix is different than if they happen while the owner is on job sites mid-morning.

How do you close the gap?

Once you know the size of the problem, the fixes fall into a few layers. Start with the cheapest one that covers your worst hours.

• Routing. Ring the office, then a crew lead's cell, then a second person, with business-hours rules. A business phone system can do this without anyone giving out a personal number.
• Missed-call text back. An automatic reply by text, sent from the business line whenever a call goes unanswered. A caller who hangs up on your voicemail greeting may still reply to a text. Our missed-call text back guide covers the wording and the rules.
• An AI receptionist. Picks up the calls you can't get to, can book on your calendar, and passes emergencies to a person. Our AI receptionist guide covers its limits.
• Staffing. For some companies, a part-time office person during peak hours is the right answer.

Whatever you choose, run the numbers again a month later. If the missed share drops, you'll see it in your call logs first. Whether revenue follows depends on how many of those callers you book. If you'd like help pulling your call data and finding where the leaks are, our free system quote covers it.

Frequently asked questions