Missed-Call Revenue Calculator
The phone rang while every chair was busy. Put in your own call volume, missed share and average ticket, and see roughly what those calls cost in a month.
Last updated October 26, 2026 · Free · Nothing stored
How much revenue do missed calls cost you?
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. That is the first-visit revenue missed calls cost you each month. This calculator does that arithmetic in the open, with every assumption editable.
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 They are not industry benchmarks and we do not cite a missed-call statistic, because the figure that matters is yours.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.
Your phone, your numbers
Default 20 · Our assumption. A round starting number, not an industry figure. Your phone carrier or VoIP dashboard shows the real daily count.
Default 26 days · Arithmetic. Six days a week: 6 × 52 weeks ÷ 12 months = 26.
Default 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.
Default 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.
Default 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.
Default $60 · Your number. A placeholder. Use average revenue per appointment from your POS or booking system report.
Default 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.
First-visit revenue lost per month
$2,730
About 45.5 bookings a month from 91 missed calls that never get through.
Per year
$32,760
Monthly figure × 12.
Plus one follow-on visit
$819
Per month, if 30% of those clients would have booked again once.
Missed calls per month
130
Of 520 calls in total.
The working, 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 above. Nothing is sent to us.
How the estimate is calculated
Five multiplications, in the order shown in the working above. Monthly calls are calls per day times days open. The unanswered share of those are missed calls. Callers who ring back, book online or get a returned voicemail are taken out, because those bookings were not lost. Of the calls left, only the share that would have booked counts, since many calls are questions rather than bookings. Lost bookings times your average ticket is the headline number.
The follow-on line is kept separate on purpose. It adds one extra visit for the share of new clients you set as the rebook rate, and nothing beyond that, so the headline stays a first-visit figure.
What it leaves out
- The defaults are placeholders we chose, not industry benchmarks. Replace each one with a figure from your own call log, POS or booking system before you rely on the result.
- Missed calls are not spread evenly. If most are 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.
- Revenue, not profit. Take your margin off the result for the amount that actually reaches the bottom line.
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.
How to estimate revenue lost to missed calls
01
Pull your call numbers
From your phone or VoIP dashboard, take calls per open day and the share that went unanswered over one normal week.
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 and per year, with the working printed underneath and a separate follow-on line.
Common questions
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.
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.