When Mike started his electrical contracting business six years ago, he was a one-man show running conduit and swapping panels, invoicing as a sole proprietor because that’s just what you did when you were starting out. Fast forward to year five, and Mike had two crews, a steady stream of commercial tenant-improvement work, and a net profit north of $140,000. He was still filing the exact same way he had on day one — and he was leaving real money on the table every single year without realizing it.
That’s actually one of the most common patterns we see in electrical contracting specifically: the trade tends to scale into solid, consistent revenue faster than a lot of other trades, which means the point where an S-corp election starts making real financial sense often arrives sooner than owners expect — and a lot of electricians simply never revisit the decision once they’ve made it.
The core mechanic, explained simply
As a sole proprietor or single-member LLC, every dollar of your net profit is subject to self-employment tax — 15.3%, covering both the employee and employer sides of Social Security and Medicare. There’s no way around it; it applies to the whole number.
An S-corp changes that math in one specific, powerful way: only the salary you pay yourself is subject to that 15.3%. The remaining profit comes out as a distribution, completely free of self-employment tax. The business doesn’t pay less in total federal income tax necessarily — but it can meaningfully reduce the amount subject to that specific 15.3% hit.
Back to Mike’s numbers
On $140,000 of net profit as a sole proprietor, Mike was paying self-employment tax on essentially the entire amount — roughly $19,800 just in that one tax, on top of his regular income tax. When we ran the numbers for him as an S-corp, paying himself a reasonable salary of $75,000 for the work he was actually doing (estimating, overseeing crews, pulling permits, running the business side), the self-employment tax equivalent — now payroll tax — dropped to around $11,475, calculated only against that salary. The remaining $65,000 came out as a distribution, untouched by that tax entirely.
That’s a difference of roughly $8,300 a year. Not life-changing on its own, but real money, every single year, for a decision that cost him nothing to make except the conversation to actually look into it.
Why it’s not automatic, though
An S-corp isn’t free to operate. You need to actually run payroll — which means a payroll service, typically $40-60 a month, plus the administrative requirement of filing quarterly payroll tax returns. You also need to file a separate business tax return (Form 1120-S) in addition to your personal return, which usually adds a few hundred to over a thousand dollars in additional tax prep cost depending on complexity.
And critically, you have to pay yourself a defensible salary — not an artificially low number designed purely to minimize payroll tax. The IRS has specific expectations here, and getting it wrong invites exactly the kind of scrutiny that can erase any savings you thought you were capturing.
The rough threshold worth knowing
Below roughly $50,000 in net profit, the added costs of running an S-corp — payroll service, extra tax filing — often eat up most or all of the tax savings, which is why this isn’t a “everyone should do this immediately” decision. Somewhere between $50,000 and $80,000 in consistent net profit is typically where the math starts tipping clearly in favor of making the switch, and the benefit grows meaningfully from there, the way it did for Mike at $140,000.
What happened once Mike made the switch
He set up payroll through Gusto, we ran his reasonable compensation analysis to land on a defensible $75,000 salary, and he filed his first S-corp return the following year. The administrative lift was real but manageable — maybe an extra hour a month of his attention, total. The savings more than covered the added cost of the accountant and payroll service combined, with real money left over.
Rather than guess where your own numbers land, our free S-Corp Quiz walks through four quick questions about your business and gives you a real, personalized estimate of what electing S-corp status would actually save — or tells you honestly if you’re not there yet.
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