Free tool

No-show cost calculator for sales calls and appointments

This no-show cost calculator puts a dollar figure on empty calendar slots. Enter calls booked, your current and target no-show rates, close rate and deal value, and it shows how many calls you miss, the revenue those calls would have produced, and how much you recover by closing the gap.
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Quick answer

How do you calculate the cost of no-shows?

Multiply booked calls by your no-show rate to get missed calls, then multiply by close rate and deal value. With 120 calls, a 35% no-show rate, 20% close rate and $3,000 deals, no-shows cost $25,200 a month. Cutting no-shows to 12% recovers $16,560 of that monthly revenue.

No-show cost calculator

Missed calls per month42
Revenue lost to no-shows per month$25,200
Revenue lost per year$302,400
Extra attended calls at target28
Revenue recovered per month at target$16,560

Missed calls = booked × no-show rate. Lost revenue = missed calls × close rate × deal value. Recovered revenue uses the gap between current and target no-show rate.

How to use the calculator

  1. Calls booked per month: every appointment on the calendar, including reschedules.
  2. Current no-show rate: missed calls divided by booked calls. Count late cancellations as no-shows.
  3. Target no-show rate: what you believe reminders and confirmation can reach.
  4. Close rate and deal value: from attended calls only.

No-show rate is the inverse of show rate: a 35% no-show rate is a 65% show rate.

Worked example with the default numbers

The calculator opens with 120 booked calls, a 35% no-show rate, a 12% target, a 20% close rate and a $3,000 deal:

  • Missed calls: 120 × 35% = 42 per month.
  • Revenue lost: 42 × 20% × $3,000 = $25,200 a month, or $302,400 a year.
  • Extra attended calls at target: 120 × (35% − 12%) = 27.6, shown as 28.
  • Revenue recovered at target: 27.6 × 20% × $3,000 = $16,560 a month.

No ad spend changes. Those calls were already paid for.

How to read the results

The recovered revenue figure is the budget ceiling for fixing no-shows. If reminders and an AI confirmation call cost a fraction of that each month, the decision is easy. Treat the lost-revenue figure as an upper bound: some no-shows would never have bought, so recovered calls may close slightly below your average rate.

Benchmarks from our client work

With three-channel reminders across SMS, email and voice, our clients reach show-up rates of up to 88%, which is a 12% no-show rate, the calculator's default target. Booking volume matters as much as attendance: one coaching client turned 174 booked appointments into $115,500, and a webinar funnel turned 140 appointments into $64,960. Read how to reduce sales call no-shows for the full reminder playbook.

What to fix when no-shows are high

Proof from client campaigns

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Frequently asked questions.

What is a normal no-show rate for sales calls?

It varies with how the call was booked and how far out. Calls booked from cold ads with no reminders often see a third or more missed. With three-channel reminders and a confirmation step, our clients reach show-up rates of up to 88%, so a 12% no-show rate is a realistic target.

Should I count reschedules as no-shows?

Count a reschedule as attended only if the rescheduled call actually happens. A lead who reschedules twice and then disappears is a no-show. Track reschedules separately in your CRM so you can see whether your reminder sequence is rescuing calls or just pushing them back.

How fast do reminders reduce no-shows?

Usually within the first week, because reminders affect calls already on the calendar. Set up a confirmation message at booking, a reminder the day before, another an hour before, and a missed-call follow-up. Measure the next 30 days of booked calls against the previous 30.

Does the calculator work for clinics and service appointments?

Yes. For med spas, dental offices or home service estimates, enter appointments booked, your no-show rate, the share of attended appointments that buy, and average ticket. For clinics where every attended appointment is paid, set close rate to 100% and use the appointment value.

Is the lost revenue figure realistic?

It is an upper bound. Some people who skip calls would not have bought anyway, so recovered calls often close a little below average. Even at half the calculated figure, most businesses find no-shows cost more each month than the reminder automation and confirmation calls needed to reduce them.

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