Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Estimated annual revenue lost
$58,968
Estimated monthly loss
$4,914
Estimated weekly loss
$1,229
Effective cost per no-show
$136.50
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How to use this
- 1Enter no-shows / late cancels per week.
- 2Enter average production per appointment slot ($).
- 3Enter % of slots that go unfilled after a no-show (%).
- 4Enter weeks open per year.
- 5Read your estimated annual revenue lost on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
A single no-show doesn't just erase that patient's fee, it wastes a chair or exam room slot that likely couldn't be refilled on short notice. This calculator multiplies your weekly no-show count by average production per appointment and the probability that slot goes unfilled, then annualizes the loss. Practices with no-show rates above 8-10% are typically leaving five to six figures a year on the table, and the fix is usually a mix of confirmation calls or texts, deposits for high-value procedures, and same-day waitlists rather than overbooking blindly.
Worked example
Using the values the calculator loads with:
Inputs
- No-shows / late cancels per week: 9
- Average production per appointment slot: 210 $
- % of slots that go unfilled after a no-show: 65 %
- Weeks open per year: 48
Results
- Estimated annual revenue lost: $58,968
- Estimated monthly loss: $4,914
- Estimated weekly loss: $1,229
- Effective cost per no-show: $136.50
What each field means
Inputs
- No-shows / late cancels per week
- The no-shows / late cancels per week used in the calculation. Starts at 9 so you have a working example on load.
- Average production per appointment slot ($)
- The average production per appointment slot used in the calculation, measured in $. Starts at 210 $ so you have a working example on load.
- % of slots that go unfilled after a no-show (%)
- The % of slots that go unfilled after a no-show used in the calculation, measured in %. Starts at 65 % so you have a working example on load. Accepted range: 0–100 %.
- Weeks open per year
- The weeks open per year used in the calculation. Starts at 48 so you have a working example on load. Accepted range: 1–52.
Results
- Estimated annual revenue lost
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Estimated monthly loss
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Estimated weekly loss
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Effective cost per no-show
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why not assume every no-show loses 100% of the slot?
Practices with a waitlist or same-day callers can often refill part of a canceled slot, especially with more than a day's notice. The unfilled-probability input lets you reflect how effective your front desk is at backfilling, which varies a lot by practice and by how last-minute the cancellation was.
What no-show rate is considered normal?
5-8% is typical for general dental and veterinary practices with a confirmation system in place. Above 10% usually points to a specific problem: a payer population without reliable transportation, poor reminder timing, or a scheduling gap between when patients book and when they're seen.
What reduces no-shows most reliably?
Two-way text confirmations sent 48 and 24 hours out, a small deposit or card-on-file policy for high-value procedures, and calling patients who've no-showed twice before booking a third time all measurably cut the rate. Overbooking as a blanket policy tends to backfire when everyone actually shows up.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Exam Room Utilization Calculator
How much of your available exam room hours are actually booked.
Dental Chair Hourly Production Calculator
Revenue generated per chair-hour after adjustments and lab costs.
Veterinary Appointment Capacity Calculator
Maximum sustainable visit volume for your current schedule template.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Dental/Vet No-Show Cost Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/dental-no-show-cost
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/dental-no-show-cost" target="_blank" rel="noopener">Dental/Vet No-Show Cost Calculator — RevenueLab</a> (2026).</p>
Source: [Dental/Vet No-Show Cost Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/dental-no-show-cost) (2026).