Your ticket lines
Your shop
Labor is charged at your technician cost per hour for the minutes each line takes. Overhead is used in the store result only.
Add your ticket lines, then click Calculate.
Result
Net by line
| Line | Net per sale | Margin | Gross per bay hour | Attach | Net per month |
|---|
Shop per month
| Item | Value |
|---|
What more attach is worth
| Line | Attach now | Attach after lift | Extra sales / month | Extra net / month |
|---|
What a discount must win back
| Line | Cut | Net lost per ticket | Extra tickets needed | Fits your bays |
|---|
How it is calculated
Net per sale: price × (1 − payment fee) − parts cost − minutes ÷ 60 × technician cost per hour. Net per ticket: the sum over lines of attach rate × net per sale; net per month is that times tickets. Break-even tickets: overhead ÷ net per ticket. Bay utilization: tickets × average labor minutes per ticket ÷ (bays × productive hours × 60 × days open). Attach lift: lift points × tickets × net per sale, capped at 100% of tickets. Discount break-even: a cut of c% on a line lowers net per ticket by attach × price × c% × (1 − fee); the extra tickets needed are old net per ticket ÷ new net per ticket − 1.
Not modelled: sales tax and fees collected for others, tire disposal rules, financing, warranty and returns, comebacks, technician idle time, rebates, and inventory carrying cost. Unverified: tested on hand-calculated examples, not on a real shop's books. It computes arithmetic; it does not tell you what to charge.
Common questions
What is a good margin on a tire shop ticket?
There is no single number, and this tool does not assert one. Enter your own prices, parts cost, labor minutes and technician cost, and it shows the net on each line and on the average ticket after card fees, parts and labor. Compare that with your own history rather than a rule of thumb.
Why does attach rate matter so much?
Attach rate is the share of tickets that include an item. Alignments, road hazard coverage, sensor service and shop fees usually cost little in parts, so each extra point of attach adds almost its full price in margin. The lift table shows the monthly net from adding a few points of attach to each line, capped at 100% of tickets.
How do I know what a discount on tires really costs?
A price cut comes off every ticket that includes the item. The discount table shows how many more tickets per month you need to keep the same total net, and whether your bays have the time to do them. If the cut takes the ticket to zero net, no amount of volume recovers it.
What are bay hours and why do they limit profit?
A bay and a technician can only work so many hours a month. The tool adds up the labor minutes on an average ticket, compares that with the hours your bays are open, and shows the most tickets you could do and the net per bay hour. A line that earns little per bay hour crowds out one that earns more.
How do I price labor?
Use your loaded technician cost per hour: wages, payroll taxes and benefits divided by paid hours. If you leave it at zero, labor is treated as free and every margin looks better than it is; the tool warns when that happens.
What does this leave out?
Sales tax, tire disposal rules, financing, warranty claims and returns, shop supplies, comebacks and re-dos, technician idle time, rebates and manufacturer programs, and the cost of the inventory you hold. It is arithmetic on your figures, not advice on what to charge.
Is my information uploaded?
No. The calculation runs in your browser from figures you type, nothing is sent to a server, there are no accounts, and it works offline after the page loads.