Byzzie Missed-call calculator
Missed-call cost calculator
When you're with a client, the phone rings out. Some of those callers wanted to book, and many won't try again. Put in your numbers to see what unanswered calls could be costing your business.
How the math works
Yearly cost = missed calls per week × share wanting to book × share who don't call back × average service price × weeks open.
With the example numbers above: 15 missed calls × 60% wanting to book × 85% not calling back = 7.7 lost bookings a week. At $40 over 48 weeks, that's $14,688 a year.
This counts one visit per lost caller. A new client who would have become a regular is worth many visits a year, so the real cost can be much higher.
Where the 85% comes from
The default “don't call back” figure is a benchmark from CallRail, a call-tracking company, as cited by NextPhone, a phone-answering vendor, in 2025. NextPhone's 2026 call report also found that about 1 in 7 small-business calls came in outside 8am to 6pm or on weekends. Both are vendor figures across many kinds of small businesses, not studies of barbershops, so change the number if you know your own.
Source: NextPhone, “Missed call text back”.
How small businesses stop losing calls
- A booking link in your Instagram bio, Google profile and voicemail greeting, so callers have somewhere to go.
- Missed-call text back, an automatic text with your booking link when a call goes unanswered.
- An AI receptionist that answers the call itself and books the client while you keep working.
Byzzie's AI receptionist does the last one, and the calendar, deposits and reminders come with it. If no-shows are the bigger problem, try the no-show calculator.
Common questions
How much do missed calls cost a small business?
Multiply missed calls per week by the share of callers who wanted to book, the share who won't call back, your average price and the weeks you're open. With 15 missed calls a week and $40 appointments, the example on this page comes to about $14,688 a year.
How many people call back after a missed call?
A CallRail benchmark cited by NextPhone, a phone-answering vendor, puts it at only about 15%, meaning 85% don't call back. It's measured across small businesses in general, not any one industry.
How do I answer the phone while I'm with a client?
Most don't. Common fixes are a booking link in the voicemail greeting, an automatic missed-call text with a booking link, or an AI receptionist that answers and books the client for you.
Is this calculator free?
Yes. It runs in your browser, needs no sign-up and doesn't save the numbers you type.
Become a founding member
Byzzie is in development. A small group of independent businesses gets access first, with a launch price that stays locked in.
See founding-member detailsLast updated October 22, 2026.