Most small electrical shops lose money before the invoice is ever sent — missed materials, delayed billing, and admin time that never shows up on a P&L. Use this free calculator to find out what it may actually be costing your shop.
Field service contractors lose an estimated 2–5% of annual revenue to missed billing, unbilled materials, and delayed invoicing. On a shop doing $500K/year, that's $10,000–$25,000 a year you earned but never collected.
Based on field service industry benchmarks and ServiceTitan's State of the Trades research. Built from conversations with Iowa electrical contractors.
Where the money goes
Missed materials — techs forget what they pulled before notes ever get written
Underbilled labor — small jobs that ran long get invoiced at the original estimate
Delayed invoicing — invoices built days later when the details are already gone
Skipped charges — small items dropped because it's not worth the back-and-forth
Late collections — payments chased weeks after the job when customers have moved on
Admin time — hours every week rewriting notes and rebuilding what should already exist
Free Calculator
Fill in your shop's numbers below. Takes about 2 minutes. We'll calculate what missed billing and admin time may be costing you every month — and every year.
Free Download
A practical set of templates you can use immediately to stop missing charges, send invoices faster, and get paid more consistently. No software required.
Send us one old estimate, invoice, or messy job note. Dyllan will personally review it and show you where money, time, or clarity may be slipping through — no pitch, just honest feedback. Takes less than 24 hours.
Want to plug the leaks automatically?
OhmFlow is software built specifically for small electrical contractors — it helps your shop capture materials in the field, turn job notes into invoices in minutes, and get paid faster without the evening paperwork. Book a free 30-minute walkthrough and we'll show you how it works with your specific situation.
OhmFlow
OhmFlow was designed from conversations with small electrical contractors in Iowa — people running 2–8 person crews who don't have time for complicated systems. It handles the paperwork bottlenecks that create profit leaks, without requiring your techs to learn new software.
I built this calculator after talking to electrical shop owners and hearing the same thing over and over: "I know I'm leaving money on the table, I just don't know how much." Most hadn't done the math. When they did, it was uncomfortable.
This tool isn't meant to sell you anything. It's meant to show you a number you should probably know. What you do with it is up to you.
— Dyllan Sparks, Waterloo/Cedar Falls, Iowa · hello@getohmflow.com · 563-249-6065
Takes 2 minutes. Free. No account required.
Questions? hello@getohmflow.com · 563-249-6065