

Most shop owners did not get into tattooing to run spreadsheets. You got in for the art, the clients, the culture. But the shops that stay open for a decade and the ones that quietly close after two years are usually separated by the same thing: the owner of the first one knows their numbers.
You do not need an accounting degree. You need five numbers, checked once a month.
Not shop revenue. Revenue per chair. Divide each artist's monthly collected revenue by the number of days they actually worked. That single number tells you which stations pay for themselves, whether a slow Tuesday is a scheduling problem or a demand problem, and whether adding a sixth chair would make money or just add rent.
Once you know it, you can price booth rent or commission splits against reality instead of against what the shop down the street charges.
Every empty appointment slot is revenue that cannot be recovered later — chair time is perishable inventory. Count how many booked appointments last month did not happen, and divide by total bookings.
The fix is almost always the same: take a real deposit at booking, make it non-refundable inside a clear window, and apply it to the final price. Shops that collect deposits electronically at the moment of booking — instead of "bring cash to your appointment" — see the number drop, because a client who has already paid shows up.
Add up ink, needles, cartridges, gloves, film, soap, and aftercare for a month, then divide by the number of tattoos done. Most owners guess low. When you see the real per-tattoo figure, two things get easier: setting a minimum that is actually profitable, and deciding whether buying in bulk quarterly beats reordering weekly.
Whether you run booth rent, a commission split, or a hybrid, write down what the shop nets per $1,000 of work produced after supplies, rent, software, and payments. If the shop's share does not cover fixed costs when one artist takes a month off, the model is too thin — and that is a structure problem, not a hustle problem.
This is also the number that keeps good artists. Artists leave shops where the math feels arbitrary, and they stay where the split is transparent and the payouts are on time.
This is the number almost nobody tracks, and it is often the largest fixable line item in the shop.
Card processing typically runs in the neighborhood of 3% of every card sale once you add up the rate, the per-transaction fees, and the monthly extras buried in the statement. On $60,000 a month in card volume, roughly $1,800 leaves the shop. Every month. On money your artists already earned.
Pull last month's processing statement and find the "effective rate" — total fees divided by total card volume. If nobody has looked at that statement in a year, this is the highest-value ten minutes in your month.
Two things can happen to that line item. With a compliant dual pricing program, the shop stops absorbing the cost of card acceptance: the customer sees a card price and a cash price at the counter and chooses. And with Revify, the shop earns a Monthly Cash-back of 0.75% of card sales, paid back to the business every month on volume that was already running through the terminal. On that same $60,000 in card volume, that is $450 coming back in — with no new clients, no price increase, and no change to how the shop works.
Pick one hour. Pull three documents: last month's processing statement, your appointment history, and your supply receipts. Write down the five numbers on one page. Do it again in thirty days.
You will not fix all five at once — but you will stop guessing, and guessing is what costs shops money.
Curious what the payments line is actually costing you? Run your numbers in our savings calculator and see what free processing plus 0.75% Monthly Cash-back would have paid your shop last month.