Guides
8 answers on wrap and tint shop KPIs, in order
Wrap and tint shop KPIs worth tracking monthly, each with its formula, the data it comes from, and the specific decision it is allowed to change.
What to take away
- Track eight numbers, each attached to a decision. A metric that changes nothing gets dropped.
- Bay days and rework hours are the two that matter most, and both come from dates you already record.
- Every number needs a written formula and a named source, or it will be calculated differently each month.
- Look at counts as well as rates. Customers experience the count.
- Review the list itself once a year and remove whatever nobody used.
The eight, with formulas
| Number | How it is calculated | Where the data comes from | The decision it changes |
|---|---|---|---|
| Bay days per job | Release date minus arrival date, averaged by service | Job records | Whether a service is priced for the time it really takes |
| Bay utilization | Sellable bay hours booked, divided by sellable bay hours available | Schedule | Whether to market more, raise prices, or add capacity |
| Rework hours | Hours recorded against jobs redone or repaired at no charge | Timesheets | Where in the process quality is failing |
| Contribution per bay hour | Price minus material and direct labor, divided by hours occupied | Job costing | Which services deserve the bay and which do not |
| Quote to booking rate | Jobs booked divided by quotes issued, split by source | Quote log | Where to spend attention on inquiries |
| Late releases | Count of vehicles released later than promised | Job records | Whether the schedule is realistic |
| Days to payment | Average days from completion to payment, commercial work only | Invoicing | Whether terms or deposits need changing |
| Cash coverage | Cash held divided by weekly fixed cost | Bank and accounts | Whether the shop can survive a slow month |
Why these eight and not others
Every one of them can change a decision an owner actually makes. Revenue per month cannot: it tells you what happened without telling you what to do. Average job value cannot either, because a shift toward long wraps raises it while making the shop busier and poorer.
Why These Eight, Not Revenue
Metric
- Revenue per month
- What happened
- Average job value
- Rises with long wraps
- Rework hours
- Quality signal
- Bay days per job
- Honest capacity
What it tells you
- Revenue per month
- No action to take
- Average job value
- Busier and poorer
- Rework hours
- Unbilled, unrecorded
- Bay days per job
- Includes cure and hold
Why it fails
- Revenue per month
- Average job value
- Rework hours
- Bay days per job
Two of the eight deserve special attention.
Rework hours are the clearest quality signal in the trade, and almost nobody records them. They are unbilled bay hours, so they appear nowhere in revenue and nowhere in a complaint log if the customer was satisfied by the repair. A shop with rising rework hours has a process problem months before it has a reputation problem.
Bay days per job is the honest capacity measure, because it includes cure and hold time when the vehicle occupies space and nobody is working. Working days per job flatters you; bay days tell the truth about what the building can hold.
Counts, not only rates
Report late releases as a count rather than as a percentage. A percentage improves as volume grows even when the same number of customers were let down, and it is the count they experienced. The same applies to complaints and to rework jobs.
Write the formula down before you compare periods
Each number needs three things written in one place: the formula, the source system, and who calculates it. Without that, the definition drifts and comparisons across months become meaningless.
Ordinary recordkeeping demands the same discipline. The IRS guidance on what records a business should keep says a business picks its own system if it clearly shows income and expenses with supporting documents. In practice, a job number ties the quote, film order, timesheet, and invoice together.
Where those records live is covered in the software and KPI guide.
The monthly review, in twenty minutes
- Read the eight numbers, in order, without commentary.
- Note which ones moved more than usual.
- For each mover, write one sentence naming the likely cause.
- Pick at most one thing to change, and say how you will know next month whether it worked.
Changing several things at once means learning nothing from any of them.
Twenty-Minute Monthly Review
- Read the eight numbers in order
- Note which moved more than usual
- Write one sentence per mover
- Pick at most one change
- Say how you will know it worked
Diagnosing the two hard ones
If bay utilization is low and quote to booking is high, you have a demand problem. If utilization is low and quote to booking is also low, you have an inquiry problem before you have a demand problem.
Diagnosing Low Utilization
Bay utilization low?
Check quote to booking rate
Utilization is fine
If rework hours rise, look at the stage, not the person, because findings at preparation are a discipline problem. Findings at application usually mean training or environment; the environment side is covered in the equipment and setup guide.
Findings at release usually mean vehicles were let go before the film manufacturer's hold period ended. Crew capability sits behind several of these; its gates are in the hiring and training guide.
Numbers you might add later
- Referral share of bookings, once you record the source at booking rather than reconstructing it.
- Material waste per job, once you measure it rather than assuming a coverage figure.
- Removal jobs that overran their estimate, once removal is a meaningful share of your work.
Add one at a time, and only when you know which decision it will inform. If utilization stays high enough for long enough, the decision it eventually informs is whether to add a bay or a site, which is treated in the expansion and market guide.
Keeping the data safe and current
The systems these numbers come from hold customer and payment data. The NIST small business quick-start guides set out cybersecurity fundamentals for small organizations, and CISA's material for small and medium businesses covers the threats behind them. Multi-factor authentication, individual logins, and an off-machine backup are the minimum.
Some records are kept because a regulator or insurer may ask rather than because a metric needs them, and which ones is set out in the licensing and compliance guide.
Common questions
How many KPIs should a small shop track?
Eight is a comfortable ceiling and four is a reasonable start. The test is whether you would act differently based on the number.
What is a good bay utilization figure?
There is no transferable answer, and a very high figure is not automatically good: it means no slack for an overrun, a sick installer, or a rework day. Watch your own trend rather than chasing a published number.
Should I share these numbers with staff?
Share the ones they influence, particularly rework and late releases, and share them without blame attached. Numbers used to criticize people stop being recorded honestly.
Why is revenue not on the list?
Because it tells you what happened rather than what to do. You will look at it anyway, and it belongs in your accounts rather than in a decision list.
