It starts with your chart of accounts. Materials and labor should never be lumped into one general “job expenses” category. You need separate cost of goods sold accounts for materials (wire, conduit, panels, fixtures, connectors) and for direct labor (wages paid to employees working on jobs). This separation is what lets you understand your true cost structure and bid future work accurately.

For materials, the best practice is tagging every purchase to a specific job or project in your accounting software. When you buy wire and breakers at the supply house for a panel upgrade, that receipt gets recorded under materials and coded to that job. If you stock common supplies like connectors and wire nuts, you can track those as general materials until they get pulled for a specific project. The key is capturing receipts at the point of purchase, whether through an app, a photo, or running everything through a dedicated business card.

Labor tracking requires timesheets that log hours by job. If your crew spends Monday and Tuesday on a commercial rewire and Wednesday through Friday on a residential service call, those hours need to be split accordingly. Time tracking apps that let employees assign hours to job codes make this straightforward. Without this breakdown, you know what you paid in wages for the week but you have no idea how much labor actually went into each project.

The combination of materials and labor tracked per job is called job costing. It answers the question every electrician needs answered: did this job actually make money? You bid a panel upgrade at $4,500. Materials came in at $1,200 and labor cost $1,800. That leaves $1,500 for overhead and profit. Without tracking both categories by job, you would have no way to know that.

One thing that trips up a lot of skilled trades businesses is not separating direct labor from indirect labor. Direct labor is the time your electricians spend on a job site. Indirect labor is admin time, drive time between jobs, and time spent picking up materials. Both are real costs, but only direct labor should get assigned to a specific job. Indirect labor is overhead. Mixing them up inflates your per-job labor costs and throws off your profitability picture.

Getting this right in QuickBooks or whatever software you use requires proper setup from the start. If your books are already a mess or everything is dumped into a handful of generic categories, a Long Beach bookkeeper who understands how electrical contractors operate can restructure things so your reports actually show you what you need to see. The goal is financial statements that help you make decisions about pricing, hiring, and which types of jobs are worth pursuing.