Search for missed calls and you'll find big, scary numbers. "Six in ten calls go unanswered." "Missed calls cost the average business six figures a year."
Some of those numbers come from real studies. The six-in-ten figure goes back to a 2016 study (opens in a new tab) that watched the phones of 85 businesses in 58 industries for 30 days. That's real, but it's small, it's ten years old, and none of those businesses was yours. Other figures come from arithmetic on assumptions, not from any study at all.
Your own number is the one that matters, and you can get it in about 20 minutes. Here's how, and what to do with it.
Step 1: pull one normal week of calls
You need a list of every inbound call for one week, with the time and whether anyone answered. Look in these places:
- Your business phone system or phone app. Look for "call history", "call log" or "call detail records". Many systems let you download a week as a spreadsheet.
- Your carrier's online account, if the business line is a regular phone line or a cell phone.
- Your Google Business Profile. Its performance report shows how many calls came from your profile. It's a count, not a log, but it's a useful check against the other two.
Pick a normal week. Not a holiday week, and not the week after a big storm, unless storms are your normal.
Step 2: sort every call into five piles
Go down the list and put each inbound call in one pile:
- Answered by a person.
- Missed, then reached. Someone called back and got them.
- Missed, never reached. No callback, or the callback went unanswered.
- Repeat attempts. The same number calling two or three times in a few minutes is one customer, not three. Count it once, in whichever pile it ended up.
- Junk. Spam, robocalls, sales calls, wrong numbers. Take these out.
Then split pile 3 into two: misses during business hours and misses after hours. You'll need that split in Step 4.
This is the part most online calculators skip. They treat every missed call as a lost job. Take out the junk, the repeats and the callbacks that worked, and your number gets smaller. It also gets true.
Step 3: turn your count into dollars
Use your own numbers. Here's how the math works with made-up ones:
- A week shows 90 inbound calls. 15 are junk. That leaves 75.
- 58 were answered. 17 were missed.
- 6 of the 17 got a callback that reached them. 11 never did.
- 4 of the 11 were existing customers who called again the next day. That leaves 7 first-time callers who never reached you.
Now the money:
- Of the first-time callers you did answer that week, what share booked? Say 4 in 10.
- 7 lost callers × 0.4 = 2.8 jobs a week.
- What's your average first job for a new customer? Say $400.
- 2.8 × $400 = $1,120 a week. Over 50 working weeks, that's $56,000 a year.
Treat that as the top of a range. Some of those callers would have booked someone else anyway. Some would have tried you again next month. Run the math a second time with a lower booking share, and use the gap between the two answers as your honest range.
One more thing the math leaves out. A new customer who likes you calls again. This counts one ticket, not the years after it.
Step 4: look at when the misses happen
Sort pile 3 by time of day. You'll probably see a pattern. Common ones:
- The morning rush, when techs are calling in and customers are calling to book.
- Lunch, when the office steps away.
- Late afternoon, when the office is closing out the day.
- After hours and weekends, when nobody's there.
- The owner on a job, if calls ring through to a cell phone on a ladder.
The fix depends on the pattern. A shop that misses calls at lunch has a different problem from one that misses them at 9 p.m. on a Saturday.
Step 5: pick the fix that fits
| Fix | Best when | How you pay | Weak spot |
|---|---|---|---|
| Voicemail plus a fast-callback rule | A few misses a day, in business hours | Free | Only works if one person owns the callbacks |
| Roll over to a second phone | Misses happen when the office is on another line | Little or nothing | Pulls a tech or the owner off the job |
| Live answering service | You want a person on every overflow call | Usually per minute | Often takes a message instead of booking; doesn't know which ad sent the caller |
| AI receptionist | Many misses after hours or in rushes | Usually a monthly fee plus per minute | Needs good setup; unusual calls still need a person |
| Hire another person | Misses all day, every day | A salary | The biggest fixed cost, and people take lunch too |
Whatever you pick, speed matters. A Harvard Business Review study of 2,241 U.S. companies (opens in a new tab) found that firms that tried to reach an online lead within an hour were nearly seven times as likely to qualify it as firms that waited even an hour longer. That study looked at web leads across many industries, not phone calls to contractors. The lesson still carries: the first hour is worth fighting for.
Is an AI receptionist worth it?
It depends on your count, not on the hype.
It's probably worth it if Step 3 shows several lost first-time callers a week, most of them after hours or in rushes, and one recovered job a month would cover what it costs. It's probably not worth it if you miss one or two calls a week and someone calls back within minutes.
If you try one, hold it to four rules:
- It says it's an AI in its first sentence. Callers deserve to know. A caller who finds out later feels tricked.
- It answers only what you send it. Overflow and after hours. Your office keeps the calls it can take.
- It books the job or takes a real message. Name, number, what they need, how urgent. "Please call me back" isn't enough.
- You test it yourself. Call it from your cell at 9 p.m. with a messy question. If you'd hang up, so will your customers.
Don't forget the web leads you never saw
Missed calls have a cousin: the web form someone starts and never sends. They type a phone number, get interrupted, and close the tab. Many form tools throw that away.
Ask whoever runs your website whether your forms keep contact details as soon as they're typed. If they don't, you're losing people who already gave you a way to reach them.
Count again in 30 days
After you change something, count the same kind of week again, with the same five piles. If pile 3 shrank, the fix is working. If it didn't, you know that too, and it cost you 20 minutes to find out.
Where FonsHive fits
FonsHive does the counting for you. Every call on a tracked number is logged as answered or missed, with its source, so the week you just sorted by hand is a screen you open.
When nobody picks up after five rings (you can change that), or it's after hours, the optional AI receptionist answers. It says it's an AI assistant in its first sentence, then books the job where your CRM gives us full access, or takes the details for a callback. If the AI service itself is ever down, the call falls back to voicemail with a transcript instead of ringing out. On forms we run, a half-filled form is saved the moment a valid phone number or email is typed, and flagged for follow-up.
Because each of those calls carries its source, you can also see which ad the recovered jobs came from. That's the subject of how to track which ads bring in jobs. For who's behind FonsHive and how it compares with an answering service, read who we are and how we compare.
Your next step
Do the count this week. It's free, and the number is yours.
If it shows calls you can't afford to lose, open the demo and look at the calls view for a made-up shop, Dunvarrow Plumbing Co. You'll see which calls the AI receptionist picked up and what they booked. Every name and number there is invented; the screens work exactly like the real product.