Free Tools
Your profit has a leak.
Answer eight quick questions and this scanner sniffs out the money quietly draining out of your service business — unpaid windshield time, free callbacks, and labor you're practically giving away. Then it hands you the wrench: exactly what to charge to stop the bleeding. No plumbing license required (but we did build it for plumbers at heart).
Across the whole shop. Be honest — nobody's reading over your shoulder.
What lands on the customer's bill — parts, labor, all of it.
Per job. Windshield time is still time you're paying for.
Wrench-in-hand, on-site time.
Jobs you go back and redo for free. The drip that really stings.
Software, insurance, truck payments — the bills that show up whether you work or not.
Boots on the ground — count yourself if you're still turning wrenches.
What you charge just to roll up. $0? Found your first leak.
Estimated profit leak
…down the drain.
🔧 Grab your wrench — here's the fix
zephlet.com/tools
How the scanner works. It's a rule-of-thumb model built on numbers most service shops can stand behind — not an audited P&L. We assume a loaded labor cost of $40/tech-hour (wage plus payroll burden), the "3× rule" for billable labor, a healthy 20% target margin, and a roughly 60/40 labor-to-parts split on a typical invoice. Unpaid drive time is the labor you pay techs to drive minus whatever your trip fee recovers. Callbacks are the free redo trips. Underpriced labor is the gap between what you bill for labor and the 3× benchmark. The fixes back into the prices that cover your costs and hit the target margin. Estimates only — your mileage (and your windshield time) may vary. No plumbers were harmed in the making of this tool.