What percentage of calls to small businesses go unanswered?

Where the "missed calls" stat comes from

If you've searched for this before, you've probably seen a confident number: businesses miss 62% of calls, or 80%, or 25%. The figures vary, and we could not trace any of them to a published UK study.

We looked for a UK source behind these claims and found none. The Federation of Small Businesses summarises how many of these are small or medium-sized, and how much employment and turnover they account for¹. The Department for Business and Trade publishes official business population estimates². Neither publishes a missed-call rate.

That absence matters. A percentage without a source is a slogan, not a statistic. When a number is repeated often enough, it starts to feel true. But if you're making decisions about staffing, software or phone systems, you want a figure you can defend.

What the data does show

The reliable numbers describe the shape of the problem, not its size.

Official business population estimates count the UK's private-sector businesses by size, sector and region, and the total runs to several million². The FSB summarises how many of these are small or medium-sized, and how much employment and turnover they account for¹. That's the context that makes missed calls a real issue: even if only a small fraction of calls go unanswered, the number of businesses affected is enormous.

The structure of small firms matters too. Many are run by the owner alone or with a handful of staff, with no dedicated receptionist or call-handling team. When the owner is with a customer, driving, or on another call, the phone rings unanswered. That's not a failure of effort; it's a structural feature of running a business with one or two people.

Why the percentage is hard to measure

There are practical reasons no official missed-call rate exists.

First, "unanswered" is hard to define. Does it mean calls that ring out entirely? Calls that go to voicemail? Calls abandoned while on hold? Different businesses would answer differently, so any single percentage would be misleading.

Second, call data is private. Telecoms providers hold it, but they don't publish it in a form that lets anyone calculate a national small-business average. The businesses most likely to miss calls are the least likely to have the call-tracking software that would measure it.

Third, the question changes fast. Call volumes shift with seasons, marketing campaigns and economic conditions. A figure measured in 2019 would tell you little about 2026.

How to measure your own missed-call rate

The number that matters is yours. Here's a simple way to get it.

For one week, log every call: the time it came in, whether you answered, and what happened if you didn't. At the end of the week, divide missed calls by total calls. That's your baseline.

Do this for two or three weeks if you can. A single week can be skewed by a busy day or a quiet one. The pattern across weeks is more useful than any single number.

Then ask two questions. First, what do missed calls cost you? If a missed call is a potential booking or order, each one has a value. Second, when do you miss them? Missed calls often cluster at predictable times: lunch, early mornings, weekends, or when the owner is on a job.

What to do about missed calls

Once you know when calls are missed, you have options.

The simplest is to change your behaviour: set a voicemail that tells callers when you'll call back, and actually call back the same day. That costs nothing and recovers some lost calls.

The next step is to route calls somewhere they'll be answered. For some businesses, that means a part-time virtual receptionist. For others, it means an automated system.

One option is an AI receptionist. Unleashed AI Receptionist answers a small business's phone 24/7 in a natural voice, books appointments into the business's calendar and answers questions from the business's own knowledge base. It's not right for every firm. If your calls need a human's judgement, it won't replace that. But it removes the structural problem of being unavailable.

The point isn't to buy a tool. It's to close the gap between when customers call and when you can answer. Measure first, then decide. To put a value on the calls you miss, see what a missed call costs a small business, and for fixes, how to stop losing customers to missed calls.