Last updated: Jan 26, 2026 · Methodology v2026.01.1
Missed Appointment Revenue Calculator
Quantify revenue lost from late cancellations and unfilled slots.
← More calculatorsWhat you'll need
- Average ticket value and monthly late cancellations.
- Fill rate for backfilling slots.
What you'll get
- Monthly and annual revenue loss ranges.
- Profit impact using gross margin.
Inputs
What this calculator helps you decide
- Whether no-shows are a rounding error or a real revenue leak
- Whether recovery rate matters more than reminder volume
- Whether this is a policy problem or an operational one
Tip: If the estimate feels ‘too high’ or ‘too low’, compare your no-show rate to what’s normal. See average no-show rates →
Results
Estimated monthly revenue leakage
$346–$518
Annual range
$4,147–$6,221
Estimate based on common industry patterns. Not a guarantee.
What this means
At this level, no-shows are often costing the equivalent of one full day of revenue each month — sometimes without anyone realizing it. The goal is to make the cost visible so you can prioritize what to fix first.
Formula
Breakdown
Assumptions
- Backfill rate assumed at 40%.
- Gross margin assumed at 60%.
- Estimates assume each unfilled slot would have sold at average ticket value.
Tips
- Offer a last-minute waitlist option.
- Send a short "open slot" message to opted-in customers.
- Use a clear cancellation policy to reduce late drops.
How this was calculated
Methodology v2026.01.1. These estimates are directional and depend on inputs and assumptions.
- Late cancellations per month × average ticket value.
- Fill-rate reduces the net missed appointments count.
- Gross margin converts revenue impact into profit impact.
- Annualized to show the yearly cost of missed slots.
FAQ
What is a missed appointment in this context?
A late cancellation or empty slot that does not get filled.
Are these estimates exact?
No. They are directional so you can see the size of the leak before refining assumptions.
Can I change the assumptions?
Yes. Adjust the inputs to reflect your business and rerun the numbers.
Why use a range instead of a single number?
Ranges reflect uncertainty and help you stress-test best and worst cases.
Does this include profit?
Use the gross margin input to translate revenue impact into profit impact.
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