"We should call them back" is easy to say and easy to forget. What's harder to ignore is the math. Here's a simple way to work out what a missed call is actually costing your business — using your own numbers, not ours.
This math works the same way whether you run a plumbing company, a salon, or a law firm — the numbers change, the method doesn't. Grab a pen, or open a blank note on your phone, and actually run it with your own figures as you read.
The three numbers that matter
You only need three figures to do this napkin math:
- Average job value — what a typical job is worth to you, from a single service call to a full project.
- Close rate on inbound calls — roughly what share of calls you actually answer turn into paid work.
- Missed calls per week — an honest estimate, not a guess that makes you feel better. Check your phone system's call log if you have one.
Most phone systems and VoIP providers keep a call log even if nobody's ever looked at it — check under call history or reporting before guessing. If you genuinely have no way to see it, track it manually for one week; that alone is often the most useful ten minutes an owner spends on this whole topic.
A worked example
Say your average job is worth $350, you close about 40% of the calls you personally answer, and you're missing roughly 5 calls a week — a realistic number for a one- or two-truck operation during a busy season.
Missed callers don't convert at the same rate as answered ones — most who get no answer simply call the next number on the list. If even half of those 5 missed calls would have closed at your normal 40% rate had you picked up, that's roughly one lost job a week. At $350 a job, that's about $1,400 a month, or close to $17,000 a year — from a phone that just wasn't picked up, not from bad service or bad pricing.
Run the same math with your own average job value and your own missed-call count, and the number is usually higher than owners expect the first time they actually sit down and calculate it.
A second example, for a different kind of business: a med spa with a $200 average appointment value, a 50% close rate on inquiry calls, and just 3 missed calls a week — a smaller, higher-ticket business — comes out to roughly one and a half lost appointments a month, or about $3,600 a year. Lower call volume doesn't mean the math disappears; it just moves the number, because a higher average ticket size offsets a lower call count.
Why voicemail doesn't fix this
Voicemail assumes the caller will wait and that you'll call back quickly. In practice, most people calling a local service business are calling two or three companies at once and going with whoever responds first — a voicemail with a callback three hours later is often already too late.
There's also a quieter cost: a caller who hits voicemail and hangs up without leaving a message never shows up anywhere in your system at all. You don't just lose the job — you lose any record that the lead ever existed, so it's invisible in every report you'd use to judge how your marketing or your team is actually performing.
An answering service solves the "someone picks up" problem but not necessarily the cost problem — a live answering service typically runs $1–3 per call or a monthly per-minute rate, and still depends on the person answering knowing enough about your business to actually book the right kind of job.
What actually recovers a missed call
A text sent automatically within seconds of the missed call, acknowledging it and offering a way to book — "Sorry we missed you! Grab a time that works here: [link]" — catches the customer while they're still deciding, not after they've already moved on. It doesn't require answering the phone; it requires answering it in a different form, instantly.
Speed matters more than most owners assume — a response within the first few minutes converts noticeably better than one an hour later, simply because the customer is often still comparing options in that window and hasn't committed to whoever else they've called. This is also why the message has to go out automatically rather than depend on someone remembering to send it between jobs; the value is almost entirely in the speed.
Do this math for your own business
You don't need any of our tools to run this exercise. Pull your call log for the last two weeks, count the calls that went unanswered, estimate your close rate honestly, and multiply. It takes ten minutes and tells you whether this is a five-figure problem or barely worth worrying about — which brings us to the next point.
When missed calls aren't actually your problem
If your napkin math comes out small — you rarely miss calls, or your call volume is low to begin with — the fix isn't call handling, it's getting more calls in the first place. Spending money automating a problem you don't really have is exactly the kind of wasted setup we'd tell you to skip. The math above is meant to tell you honestly which situation you're in before you spend anything.