Client Drift Revenue Calculator
The quietest revenue leak in a service business is regulars stretching their visits apart, and the ones who slip away entirely. Put in your own numbers to size both.
Client drift costs you in two ways. Regulars who used to come every few weeks and now come less often lose you the visits in between; clients who lapse entirely lose you a full year of visits each. Enter your regular-client count, average ticket, expected and actual visit gaps, and how many have lapsed to see each cost per year, shown separately. Every number is arithmetic on your inputs.
Visits lost per year vs. expected
289
Annual revenue lost to widening gaps
$14,444
Annual revenue lost to fully lapsed clients
$4,333
Shown separately from the widening-gaps figure. Every number here is arithmetic on your inputs only, using 52 weeks per year.
Methodology. Visits per year = weeks per year ÷ weeks between visits. Revenue lost to widening gaps = regular clients × (expected visits/year − actual visits/year) × average ticket, and is never negative (if clients come at least as often as expected, it is $0). Revenue lost to fully lapsed clients = lapsed clients × expected visits/year × average ticket, reported separately. The only constant is weeks per year, a labeled input that defaults to 52 and which you can lower if you close for part of the year. No retention curve, drift rate, or recovery percentage is assumed — the result is only ever arithmetic on the numbers you type.
Frequently asked questions
How does the client drift calculator work?
It turns each cadence into visits per year (weeks per year ÷ weeks between visits, defaulting to 52 weeks). The gap between expected and actual visits, times your regular-client count and average ticket, is the revenue lost to widening gaps. Fully lapsed clients are counted separately: a full year of expected visits each, times your ticket.
What is the difference between a drifting client and a lapsed client?
A drifting client still comes in, just less often than they used to, so you lose the difference between their expected and actual visits. A lapsed client has stopped coming entirely, so you lose a full year of their expected visits. The calculator shows the two losses separately because they call for different responses.
Are any assumptions baked into the result?
No. Every figure is arithmetic on the numbers you enter. The only constant is weeks per year, and it is a labeled input you can change (default 52) rather than a hidden factor. There are no assumed retention curves, drift rates, or recovery percentages.
Is my data saved?
No. The calculator runs entirely in your browser. Nothing is sent to a server, stored, or shared.
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