No-Show Cost Calculator
Find out how much missed appointments are actually costing your business each month — and each year. Plug in your numbers below.
Your no-show cost
Based on 4.33 weeks per month. Late cancellations assume the same average revenue as a completed appointment.
What does this calculator work out?
It estimates the revenue your business loses when booked clients do not show up or cancel too late to fill the slot. You enter your weekly appointment count, average ticket price, and no-show rate — the calculator returns a monthly and annual dollar figure for lost revenue after accounting for any slots you manage to rebook.
No-shows affect every appointment-based business differently. A barber losing a $30 haircut absorbs less damage per incident than an HVAC contractor losing a $250 service call, but a barber with 60 weekly bookings and a 15 % no-show rate can lose over $12,000 a year. The calculator lets you see your own number instead of guessing. It also includes late cancellations — appointments cancelled inside the window where you realistically cannot fill the slot — because the financial impact is identical: the chair or the truck sits idle.
What numbers do you need before you start?
You need five numbers, three of which you probably already know: how many appointments you book in a typical week, what the average client pays per visit, and roughly what percentage of those appointments end as no-shows. If you do not track your no-show rate, start with 12 % — that is the midpoint of the 10-15 % range reported across salons, clinics, and home-service businesses.
The other two inputs are optional refinements. Late cancellations per week captures slots cancelled so close to the appointment time that you cannot realistically fill them — enter 0 if you do not want to count those. The fill rate is the percentage of empty slots you manage to rebook on short notice; most businesses land between 10 % and 20 %. The defaults are reasonable starting points — adjust them once you have real data from your booking system.
How are the results calculated?
The formula is straightforward. Weekly no-shows equals your total appointments multiplied by your no-show rate. Late cancellations are added on top. The calculator then subtracts the percentage of those empty slots you typically fill (the recovery rate), giving you a net number of lost slots per week. That net figure is multiplied by your average revenue per appointment, then by 4.33 (the average weeks in a month) to produce the monthly cost. The annual figure is simply twelve times the monthly number.
Every assumption is visible on the page and adjustable by you — there are no hidden multipliers. The calculator does not factor in sunk costs like staff wages during idle time or wasted materials, so the real cost of a no-show is often higher than the number shown. Think of this as the floor, not the ceiling.
Industry No-Show Rate Benchmarks
The table below outlines typical no-show frequencies and estimated annual revenue losses across common appointment and service businesses (based on 40 weekly bookings and 15% slot recovery):
| Industry / Trade | Typical No-Show Rate | Avg Ticket | Lost Slots / Wk | Est. Annual Revenue Lost |
|---|---|---|---|---|
| Salons & Spas | 12% – 15% | $85 | 4.5 | $19,800 |
| Barbershops | 14% – 18% | $35 | 5.4 | $9,800 |
| HVAC Maintenance & Tune-ups | 8% – 12% | $180 | 3.4 | $31,800 |
| Plumbing Service Calls | 7% – 11% | $240 | 3.1 | $38,600 |
| Auto Detailing & Mobile Repair | 8% – 12% | $160 | 3.4 | $28,300 |
| Pet Grooming | 10% – 14% | $75 | 4.1 | $15,900 |
| Dental & Healthcare Clinics | 10% – 16% | $200 | 4.4 | $45,700 |