How much are missed calls costing you?
Every call that rings out is a customer who was ready to talk. Most of them do not leave a message. They call the next name on the list. Put a number on it.
Your phone
Start with what you know. Adjust the rest until it feels honest.
From callers who never reached you and did not call back.
An AI voice agent on WhautoVoice starts at US$59 a month and answers on the first ring, day and night.
Answer every call. Start free.Why missed calls are worse than they look
A missed call is not a neutral event. The person on the other end had a need and enough intent to pick up the phone, which makes them the warmest lead your business will see all day. When the call rings out, a small minority leave a voicemail. The rest either try again later, if you are lucky, or call the next business in the search results. For trades, clinics, restaurants and estate agents, that next business is a direct competitor with the same opening hours as you.
The problem compounds after hours. Many businesses take a third of their calls before opening, over lunch or after closing, precisely when nobody is at the desk. Those calls do not show up as "missed" in anyone's head, because nobody heard them ring.
Methodology
- Missed calls a month = calls a day x business days x unanswered share.
- Gone for good = missed calls x (1 - share who leave a message or call back).
- Lost customers = gone for good x new-business share x your normal win rate.
- Lost revenue = lost customers x value per customer. Use first-job value for a conservative figure or lifetime value for the real one.
- Recovered with an AI agent = lost revenue x the share of missed calls the AI would answer. An agent that never sleeps and never gets a busy signal answers almost all of them; some callers still hang up on any automated greeting, which is why the default is 90% and not 100%.
What the benchmarks say
| Benchmark | Typical range | Where to get your own number |
|---|---|---|
| Calls unanswered during hours | 20% to 35% | Your phone system's missed-call report |
| Calls arriving outside hours | 25% to 40% of total | Same report, filtered by time of day |
| Missed callers who leave voicemail | Under 20% | Count voicemails against missed calls for a week |
| Missed callers who call a competitor | Most of the rest | You cannot measure this. That is the point. |
What to do about it
The fix has three parts, and they do not all need a person. First, answer on the first ring, at every hour, with something better than voicemail: an AI voice agent that can book, quote, take a message with real detail, or route. Second, make sure the calls that need a human reach one, with the context already captured, so nobody has to explain twice. Third, look at the report every Monday: answer rate, calls by hour, and what the AI resolved on its own. WhautoVoice does all three on your own Twilio and OpenAI accounts, starting at US$59 a month, with a 14-day free trial.
Frequently asked questions
Industry studies consistently find that a large share of calls to small businesses go unanswered, often more than half outside a staffed front desk and around a quarter to a third during business hours. Use your own phone system's report if you have one; otherwise start with 30% and adjust.
Mostly no. Most callers who reach voicemail hang up without leaving a message, and a large share call a competitor instead. The calculator lets you set the share you believe you recover through voicemail or callbacks.
Use the average value of a first job, booking or order, or the lifetime value if you retain customers. A dental practice might use several hundred dollars, a plumber a few hundred, a law firm several thousand.