Free tool
Fill cycle chair capacity planner
Work out how many hours of your week your existing lash clients already own at your fill interval, and how much room is genuinely left for new sets.
Free tool, no sign up
Lash set cost and price floor calculator
Find the true cost of one set at your own bed, including the overhead every appointment quietly carries and the cut your card reader takes.
Most lash artists know their tray and adhesive cost and stop there, which is why so many menus sit a long way under water. Product is usually the smallest line. The expensive parts of a set are the hours it takes at the bed and the share of rent, insurance, laundry and restock that every appointment has to carry whether the room is booked or empty.
This calculator adds those together and then divides by what is left after the processor takes its percentage, which is where most price floors get quietly missed. Put your own numbers in. The result is not a suggested price, it is the number below which a volume set is costing you money to perform.
Your result
Overhead carried by each appointment
$31.11
Your fixed studio cost split across every appointment the bed holds in a month.
Your chair time on this set
$137.50
What the hours at the bed are worth at the rate you set for yourself.
True cost of the set before card fees
$182.61
Product, overhead and chair time added up before the processor takes its share.
Price floor for this set
$188
Charge under this and the set costs you money once the card fee clears.
The floor is a break even line at the pay rate you entered, not a recommended menu price, so build your margin above it.
Why overhead per appointment decides your lash menu
Two artists can buy the same trays and the same adhesive and have costs that differ by 40 dollars a set, purely because one works 60 appointments a month in a shared room and the other works 30 in a suite. Overhead does not care how busy you are, so a slow month raises the true cost of every set you perform in it.
This is the arithmetic behind fill retention. If your overhead per appointment is 31 dollars at 45 appointments, it is 47 dollars at 30. Losing eight regular clients to a stretched interval does not just cost you their tickets, it raises the cost of every set you still do. That is why a three week cycle protects your margin twice.
Using the floor to price fills and full sets separately
Run the calculator twice. Once with full set chair time and full set product, then again with fill chair time, a smaller tray draw and the same overhead per appointment. Most artists find the fill floor is closer to the full set floor than their menu suggests, because overhead and card fees do not shrink with the appointment.
Then run a third pass with the chair time of a rescue set, meaning a client at week six who needs most of a new set. If your fill price is charged on that appointment, the calculator will show you exactly what the stretched interval costs you, usually somewhere between 40 and 90 dollars of unpaid chair time per occurrence.
Questions about this calculator
Should I include my own pay in the cost of a set?
Yes, always. If your hourly rate is not in the cost, the calculator will tell you a set is profitable when in fact you are working the bed for nothing. Enter what you would need to be paid to do this work for someone else.
What if my product cost per set varies with volume fans?
Run it at your most common set style first, then run the extremes. Handmade volume fans use more tray and more adhesive per set than a classic, and the chair time difference is usually larger than the product difference anyway.
Does the card fee really matter at this scale?
It matters more than artists expect once you add tips and retail to the ticket. On a busy month it is often the equivalent of one full set. The calculator divides the cost by what is left after the fee rather than adding the fee on top, which is the correct way to reach a floor.
More free tools and working documents
Working document
The fill cycle client record template
One page per lash client that turns guesswork about her rebook date into a record you can read before she sits down.
Now hold that fill interval in a real week
The figure above assumes every lash client comes back on the spacing you entered. Holding that with forty clients and a shed cycle that ignores your policy is the actual work. LashRetention scores each client on what stayed attached, sets her due date from her own pattern, and prompts the rebook before she is off the bed. Book a demo and we will run your inputs against a live client record.