What is a chart of accounts for an electrical contractor?

A chart of accounts is the list of every account your books can post to — income, cost of goods sold, operating expenses, assets, and liabilities. For an electrical shop, the version that matters splits income by line of business — service, panel upgrades, EV chargers, lighting, construction, prevailing wage — with matching cost accounts underneath, so you can see the margin on each instead of one blended number that hides which side of the shop is carrying the other.

How many accounts should an electrical contractor have?

Roughly 50 to 65 for most shops. Electrical carries a few structures other trades do not — a separate prevailing-wage labor account, a dedicated subcontractor account, and retainage — so the list runs slightly longer than a comparable HVAC shop. Fewer than about 35 accounts and your P&L cannot answer pricing questions. More than about 80 and techs and office staff start miscoding, which is worse than having fewer accounts.

Why does prevailing wage need its own account?

Because those hours genuinely cost more, and blending them destroys both numbers. If prevailing-wage labor and standard labor post to one account at one blended rate, public-works jobs look cheaper than they are and your standard service work looks more expensive than it is. You then underbid the prevailing-wage work and overprice the service work. Two accounts and two burdened rates fix it permanently.

Should wire and conduit be a separate account from devices and fixtures?

Yes, and copper volatility is the reason. Wire and conduit cost moves with commodity pricing; devices and fixtures move with supplier pricing and your own markup decisions. Combined into one materials account, a copper price spike is indistinguishable from material waste in the field or a change in your fixture mix — and you cannot tell which one moved your margin, so you cannot respond to it.

What are the most common electrical chart of accounts mistakes?

Five recur constantly: one blended income account so service and construction margin cannot be separated, direct labor sitting in operating expenses instead of COGS (which makes gross margin meaningless), prevailing-wage hours costed at the standard rate, permits and inspections left in general expenses instead of costed to the job, and subcontractor payments buried in general expenses so January becomes a 1099 reconstruction project.

Electrical Chart of Accounts: A Complete Template for Contractors

A chart of accounts is the list of every account your books can post to. For an electrical contractor it is also the thing that decides whether your P&L can tell you that panel upgrades are quietly carrying the company while tenant-improvement work loses money on every draw — or whether it reports one blended margin and leaves you guessing.

Most shops inherit a generic template from their accounting software, never change it, and end up with books that reconcile perfectly and explain nothing. This guide covers the accounts an electrical shop actually needs, why each one exists, and the setup mistakes that make a P&L useless for bidding.

Free download: Electrical chart of accounts template (CSV) — the structure in this guide as 57 numbered accounts, with account types and a one-line note on why each exists. Imports into QuickBooks Online, Xero, and most accounting software. No email required.

Why the default template fails electrical shops

The generic small-business chart of accounts was built for a business that sells one thing at one margin. An electrical contractor sells at least six: service and troubleshooting, panel and service upgrades, EV charger installs, lighting and retrofit work, generator installs, and new construction or tenant improvement. Add public works, and there is a seventh with a legally mandated labor rate.

Those are not variations on a theme. They have different margins, different durations, different cash profiles, and different risk.

Then there is the cost side. A "Materials & Supplies" account that holds a 200-amp panel, a spool of #12 THHN, a case of receptacles, and printer paper cannot tell you anything. When copper moves 20% and your material cost rises, you cannot tell whether you have a pricing problem, a waste problem, or a commodity problem — because all three land in the same account.

The result is a single blended gross margin that is the average of six different businesses. That average is exactly the number that hides a problem. Two shops with identical blended margin can be in completely different shape: one is making money across the board, the other is bleeding on contract work and doesn't know it because high-margin panel work covers the loss.

The fix is structural. Income split by line of business, cost of goods sold split by what actually drives cost per job.

Income accounts

Start here, because everything downstream depends on it.

Account	What belongs in it
Service & troubleshooting revenue	Diagnostic calls, repairs, device and circuit work
Panel & service upgrade revenue	Panel changes, service upgrades, meter work
EV charger install revenue	Residential and commercial EV equipment installs
Lighting & retrofit revenue	Fixture replacement, commercial lighting retrofits
Generator sales & install revenue	Standby generator equipment and installation
New construction & tenant improvement revenue	Builder and TI work — bills in draws, collects slowly, carries retainage
Prevailing wage / public works revenue	Public and publicly-funded work at mandated rates
Emergency & after-hours revenue	Premium-rate nights, weekends, holidays
Service agreement revenue	Recurring plan billings — your predictable baseline
Low-voltage & data revenue	Structured cabling, access control, data work if you carry it
Other income	Rebates, referral fees, warranty reimbursements — not operating revenue

Three of these earn their place more than owners expect.

EV charger installs, separated out. This line is growing fast in most markets, and its margin profile is genuinely its own — equipment-heavy, often rebate-influenced, sometimes requiring a service upgrade that should be billed as its own scope. Buried inside general service revenue, you cannot tell whether you are pricing it well, and it is the line most likely to change shape over the next few years. Worth watching separately from the start.

Prevailing wage as its own income line. Not because the revenue is different in kind, but because it pairs with a different labor cost. Keeping the revenue separate lets you put a genuine margin on public works instead of an estimate.

Panel and service upgrades, separated from service. For most shops this is the highest-volume large ticket in the business, and it is where pricing discipline pays off fastest. Blended into general service revenue it is invisible.

Cost of goods sold

These are the costs that vary with the work. Get this section right and job costing becomes arithmetic instead of archaeology.

Account	Why it's separate
Materials — wire & conduit	Copper moves; this is the account that shows it
Materials — devices & fixtures	Receptacles, switches, luminaires, trim
Gear & panels	Panels, breakers, disconnects, transformers — large, traceable, deliberately marked up
EV & generator equipment	Chargers and generator units, kept off general materials
Truck stock consumed	Parts pulled off the van onto a job
Direct labor — standard (burdened)	Burdened tech cost on standard work
Direct labor — prevailing wage (burdened)	Mandated rate plus fringe — never blended with standard hours
Direct labor — after-hours (burdened)	Premium labor, tracked separately
Permits & inspections	Directly attributable, heavier here than most trades, routinely forgotten
Subcontractors	Trenching, concrete cutting, low-voltage, fire alarm, patch and paint
Equipment rental	Lifts, trenchers, bucket trucks, specialty tooling
Callbacks & warranty	Return trips on work already invoiced
Freight & delivery	Supply house delivery, drop-shipped gear
Disposal & recycling	Old gear haul-off, copper scrap

Four of these deserve elaboration.

Wire and conduit separate from devices and fixtures. This is the electrical-specific split, and it exists because copper is a commodity. When your material cost per job rises, you need to know whether the market moved, your waste went up, or your job mix changed. One combined materials account makes those three indistinguishable. Two accounts and the answer is usually obvious within a month.

Direct labor belongs in COGS, not operating expenses. This is the most common structural error in trade books. If tech wages sit in operating expenses, your gross margin is revenue minus parts — a number with no relationship to job profitability. Labor is a direct cost of the work and belongs above the gross margin line. Use a burdened rate: wage plus payroll taxes, workers' comp, and benefits, typically 1.3 to 1.4 times the base wage, and electrical workers' comp classifications tend toward the upper end. A journeyman you pay $38 an hour costs you roughly $50 to $53.

Prevailing wage gets its own labor account. Public works carries a mandated rate well above most shops' standard rate, plus fringe requirements. Blend the two and both numbers become fiction: prevailing-wage jobs look cheap, standard work looks expensive, and you misprice in both directions. Two accounts, two rates.

Subcontractors get their own COGS account. Electrical shops sub out more than most service trades, and every one of those payments is both a job cost and a potential 1099. A dedicated account means your year-end 1099 population is a report you run instead of a reconstruction project. Collect the W-9 before the first payment, not before the first 1099.

Truck stock, and why it belongs on the balance sheet

Your vans carry thousands of dollars in wire, breakers, boxes, and devices that moves without a purchase order attached. A tech pulls a breaker off the shelf at 7am and installs it at 9am.

If your books expense every supply-house purchase the moment it is bought, two things break at once: the week you restock four vans looks like a catastrophic month, and the jobs that consumed those parts look unusually profitable because their materials were expensed weeks earlier.

The correct treatment is to hold truck stock in an inventory asset account at purchase, then relieve it to a Truck stock consumed COGS account as it goes onto jobs. The cost then lands in the same period as the revenue it produced, which is the entire point of accrual accounting.

Most shops cannot run true perpetual inventory on a service van, and that is fine. The workable version is a physical count once a quarter with a true-up entry into Truck stock consumed. Even at quarterly resolution that is dramatically better than expensing at purchase — and the count itself usually turns up shrink nobody knew about. Copper walks.

Operating expenses

These are the costs of being in business regardless of which jobs you run. They belong below the gross margin line.

Vehicles — fuel, maintenance, repairs, registration, vehicle insurance
Insurance — general liability, workers' comp (the non-burdened portion), umbrella
Contractor bonding — license and performance bonds, required in most states
Office & administrative — rent, utilities, dispatch salaries, office supplies
Software & technology — field-service software, accounting software, phone system
Marketing — ads, van wraps, website, review platforms
Professional fees — CPA, legal (including lien filings), bookkeeping
Licensing & continuing education — master and journeyman licensing, state fees, code update training
Bank & merchant fees — processor fees, consumer financing dealer costs
Small tools & consumables — blades, bits, tape, hand tools below your capitalization threshold
Safety & PPE — arc flash gear, gloves, and the testing and certification of protective equipment
Depreciation — non-cash, but it belongs on the P&L

Safety and PPE deserves its own line in this trade. Arc flash gear and glove testing are recurring, non-trivial, and genuinely different from general small tools. Tracking them separately also makes the cost visible when someone asks why it exists.

Merchant and financing fees deserve their own account. Consumer financing is common on generator and whole-home work, and the dealer fee can run several percent of the ticket. Buried in general expenses, that cost never gets attributed to the line that generated it, and your install margin reads better than it is. More on that in why dealer financing hides your real install margin.

Assets, liabilities, and equity

The balance sheet is where the contractor-specific structure really shows up.

Section	Accounts
Assets	Operating bank · Payroll/tax reserve · Accounts receivable · Retainage receivable · Inventory — truck stock · Inventory — gear on hand · Vehicles · Tools & equipment · Accumulated depreciation
Liabilities	Accounts payable · Credit cards · Equipment loans & vehicle notes · Payroll liabilities · Prevailing wage fringe payable · Sales tax payable · Deferred service agreement revenue · Customer deposits
Equity	Owner's capital · Owner's draw · Retained earnings

Four are worth calling out.

Retainage receivable is not accounts receivable. Retainage is money you have earned but cannot spend, typically 5 to 10% withheld until closeout. Left in ordinary AR, a $60,000 receivable balance reads as collectible cash when $22,000 of it is sitting behind a final inspection. Give it its own account, and track lien deadlines alongside it — in most states those run from your last day on the job, not from the invoice date.

Prevailing wage fringe payable. Where fringe is not paid as cash, it is an obligation you are carrying. It needs somewhere to sit. Confirm the mechanics with your payroll provider, but the account needs to exist.

Customer deposits are a liability, not revenue. Money taken up front on a generator install before any work is done is not yours yet.

Vehicles and equipment are assets, not expenses. A $62,000 van or a $9,000 wire puller expensed in the month you bought it destroys that month's P&L and misstates every margin you calculate from it. Capitalize and depreciate — and your CPA needs it recorded properly to elect Section 179 or bonus depreciation.

Setting it up without breaking your history

If you are restructuring an existing chart of accounts rather than starting clean:

Change at a period boundary — the start of a quarter or year. Mid-period changes make comparisons meaningless.
Rename before you create. If "Sales" becomes "Service & troubleshooting revenue," renaming preserves the transaction history. Creating a new account and abandoning the old one splits your history across both.
Merge rather than delete. Deleting an account with transactions either fails or orphans data.
Map the old to the new in writing before you touch anything, so you can restate at least the prior year for comparison.
Tell whoever codes transactions. A chart of accounts is only as good as the coding discipline behind it. If your techs pick categories on supply-house purchases, they need the new list and a short explanation of the service/construction split and the wire/devices split.

What good looks like

Once the structure is right, your P&L should let you answer these without opening another system:

What was gross margin on service work last month, and on construction, separately?
What did panel upgrades return as a category, and is that better or worse than six months ago?
What is my true margin on prevailing-wage jobs at the mandated rate?
How much did copper movement cost me this quarter, separate from waste?
What did callbacks cost as a percentage of service revenue?
How much of my AR is actually retainage I cannot collect yet?
Which subcontractors crossed the 1099 threshold, as of today?

If your current books cannot answer those, the problem is almost certainly the chart of accounts rather than the bookkeeper.

Once the structure is in place, the next step is assigning those costs to individual jobs. That is covered in the complete guide to electrical contractor bookkeeping, along with prevailing wage handling, subcontractor tracking, and a monthly close routine. If you run HVAC or plumbing work alongside electrical, the HVAC chart of accounts and plumbing chart of accounts cover what those trades need.

The bottom line

A chart of accounts is not administrative housekeeping. It is the structure that decides which questions your books can answer. Split income by line of business, put burdened labor in COGS with a separate prevailing-wage rate, split wire from devices so copper movement is visible, cost permits and subs to the job, hold truck stock as inventory, keep retainage out of AR, and capitalize your vans.

That is most of the work, and it costs nothing but an afternoon and the discipline to code consistently afterward.

If you want the structure without rebuilding it by hand, the electrical chart of accounts template (CSV) has all 57 accounts numbered and ready to import.

*Written by Austin Semple, a former controller with 10+ years of audit and controller experience, and the founder of Poof. If you'd rather have the structure built for you and maintained every month — with per-job P&L on every close, reviewed by a controller you can text — that's what Poof Managed for Trades is.*