Missed-Call Revenue Calculator
The phone rang while every chair was busy. Pick your type of business, adjust the numbers to match your phone log, and see what unanswered calls cost you each month and year.
Last updated November 12, 2026 · Free · Nothing stored
Start from your type of business
Starting points, not benchmarks. Swap in your own numbers below.
Revenue lost to missed calls
$2,730
About 46 first visits a month, or $105 every day you are open.
Where the calls go, a month
- Calls520
- Missed130
- Never get through91
- Lost bookings46
- Plus one follow-on visit
- +$819
- If 30% would have rebooked once
- Monthly total with follow-on
- $3,549
- Revenue, before your margin
First-visit revenue you would keep a month. A forwarded line, a text-back or an AI receptionist are the usual ways to catch them.
Show the math with your numbers
- 20 calls × 26 days = 520 calls
- × 25% unanswered = 130 missed
- × 70% who do not get through later = 91 lost calls
- × 50% that would have booked = 45.5 lost bookings
- × $60 average ticket = $2,730 a month
The link holds only the seven numbers. Nothing is sent to us.
How much revenue do missed calls cost you?
Missed calls cost you the bookings those callers would have made. Multiply your monthly calls by the share nobody answers, remove the callers who try again and get through, keep only the share that would have booked, then multiply by your average ticket. With 20 calls a day, 26 days open, 25% missed, 30% getting through later, half of calls booking and a $60 ticket, that is about $2,730 a month, or $32,760 a year, in first-visit revenue.
The defaults are placeholders we chose so the page shows a number on load. They are not industry benchmarks and we do not cite a missed-call statistic, because the figure that matters is yours. Your phone carrier or VoIP dashboard shows calls and missed calls; your POS or booking system shows average ticket and rebooking.
How to calculate the cost of missed calls
The cost of missed calls is the revenue from bookings those callers would have made. Take your monthly calls, keep the share nobody answers, remove the callers who try again and get through, keep the share that would have booked, and multiply by your average ticket.
The result is first-visit revenue. A lost new client can also mean lost repeat visits, so the calculator shows one follow-on visit on a separate line instead of folding it into the headline. It is revenue, not profit: take your margin off for the amount that reaches the bottom line.
The formula
Lost revenue per month = calls per day × days open × missed % × (1 − callback %) × booking % × average ticket
Worked example
- 20 calls × 26 days = 520 calls a month
- × 25% missed = 130 missed calls
- × 70% who never get through = 91 lost calls
- × 50% that would have booked = 45.5 lost bookings
- × $60 average ticket = $2,730 a month, $32,760 a year
What missed calls cost by type of business
The same formula gives very different answers depending on ticket size and how often callers try again. A home-services company takes fewer calls than a restaurant, but each one is worth far more. These are example inputs for each kind of business, not industry averages. Load one, then replace the numbers with your own.
| Business | Calls / day | Missed | Avg ticket | Lost / month | Lost / year | Load |
|---|---|---|---|---|---|---|
| Salon & spaHair, nails, lashes, massage | 20 | 25% | $60 | $2,730 | $32,760 | |
| RestaurantReservations, takeout, catering | 40 | 20% | $45 | $3,240 | $38,880 | |
| Clinic & dentalDental, chiro, physio, med spa | 30 | 20% | $180 | $6,415 | $76,982 | |
| Home servicesPlumbing, HVAC, pest, electrical | 10 | 25% | $300 | $7,313 | $87,750 |
How to stop losing revenue to missed calls
Most missed calls happen when everyone is with a client, at lunch, on a job or after close. The fixes below go from free to fully covered; use the what-if slider in the calculator to see what catching some of those calls is worth.
01
Forward the line when nobody can pick up
Set busy and no-answer forwarding so a ringing phone goes to a second person, a cell or an answering service instead of voicemail.
Find your carrier’s forwarding code →02
Text back every missed call
An automatic text with your booking link reaches the caller while they are still deciding where to book.
How missed-call text back works →03
Make voicemail send people somewhere
A greeting that gives hours, the booking link and when you will call back turns some missed calls into bookings on their own.
Write a voicemail greeting →04
Let an AI receptionist answer and book
An AI receptionist picks up every call, answers questions and books into your calendar, including after close.
See the AI receptionist →
Every assumption and its default
- Inbound calls per open day
- 20
- Our assumption. A round starting number, not an industry figure. Your phone carrier or VoIP dashboard shows the real daily count.
- Days open per month
- 26 days
- Arithmetic. Six days a week: 6 × 52 weeks ÷ 12 months = 26.
- Calls that go unanswered
- 25%
- Our assumption. Our assumption, not a sourced statistic. Count the missed calls in your call log for one normal week and divide by total calls.
- Missed callers who try again and get through
- 30%
- Our assumption. Our assumption. Some callers ring back, book online, or leave a voicemail you return; those are not lost. Raise it if your regulars usually retry.
- Answered calls that end in a booking
- 50%
- Our assumption. Our assumption. Many calls are about hours, prices, directions or an existing appointment, so not every call is a booking. Tally one day of answered calls to check.
- Average ticket per visit
- $60
- Your number. A placeholder. Use average revenue per appointment from your POS or booking system report.
- New bookings that lead to one more visit
- 30%
- Our assumption. Our assumption, used only for the separate follow-on line. Your booking system's rebooking or retention report gives the real share.
What the estimate leaves out
- The defaults are placeholders, not industry benchmarks. Replace each one with a figure from your call log, POS or booking system before relying on the result.
- Missed calls are not spread evenly. If most come at lunch, Saturday peaks or after close, the booking share at those times may differ from your daily average.
- It does not count costs you would avoid or add, such as staff time spent returning calls, or what any answering option costs.
- It is revenue, not profit. Take your margin off the result for the amount that actually reaches the bottom line.
How to estimate revenue lost to missed calls
01
Pick your business and pull your call numbers
Choose the closest type of business to load starting numbers, then replace calls per open day and the missed share with one normal week from your phone or VoIP dashboard.
02
Set what a call is worth
Enter the share of answered calls that end in a booking and your average ticket from your POS. Adjust how many missed callers try again.
03
Read the monthly figure
The result shows lost bookings and first-visit revenue per month or per year, where the calls go, a separate follow-on line, and what answering more of them would be worth.
Common questions
How do you calculate the cost of a missed call?
Work out what one call is worth, then count the calls that are really lost. A call is worth your booking rate times your average ticket: at 50% and $60, about $30. Multiply by missed calls a month, after removing callers who ring back or book online. The calculator above does this with your own numbers.
How much does a missed call cost a restaurant, clinic or contractor?
It depends mostly on average ticket and whether callers wait. With the example inputs on this page, a restaurant loses about $3,240 a month, a dental or chiro clinic about $6,415, and a home-services company about $7,313: it takes fewer calls, but each plumbing or HVAC job is worth far more. Load your type of business and replace the numbers with yours.
Where do the default numbers come from?
Only days open (26) is arithmetic: six days a week times 52 weeks, divided by 12. The rest are round placeholders we picked so the calculator shows a result on load. They are not sourced benchmarks, so replace them with your own figures.
How do I find my real missed-call rate?
Most carrier apps, VoIP dashboards and business phone systems list missed calls. Take one ordinary week, divide missed calls by total inbound calls, and use that percentage. If you only have a desk phone, a tally sheet by the phone for a week works.
Why does the calculator subtract callers who try again?
Because some missed callers are not lost: they ring back, book online, or leave a voicemail that someone returns. Counting every missed call as a lost booking would overstate the figure, so the callback share comes off first.
Why is the follow-on visit shown separately?
A lost first visit can also mean a lost second one, but that depends on your rebooking rate and is less certain. Keeping it on its own line means the headline is a first-visit number you can check against your own books.
Is the result revenue or profit?
Revenue. Take your margin off the result to see what would reach the bottom line. The service pricing calculator can help you find that margin per service.
How can I stop missing calls?
Set busy and no-answer call forwarding to a second person or service, send an automatic text with your booking link to every missed caller, and record a voicemail greeting that points to online booking. An AI receptionist can answer every call and book it, including after close.
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See it against your book
Bring the number. We will look at when the calls are missed.
On a 30-minute demo we look at your call pattern, show the front-desk agent answering and booking against the calendar you already use, and tell you plainly if your volume is too low for it to be worth paying for.