Somebody at the supply house told you to become an S Corp. Somebody else said it’s a headache. Both of them are describing real experiences, and neither one knows your numbers.
Entity structure is one of the few decisions in a contracting business where the right answer is genuinely arithmetic. It’s also one of the most common expensive defaults in the trades — set at formation, when profit was small and the goal was just getting licensed and bonded, and then never looked at again through five years of growth.
Here’s what’s actually going on underneath the advice.
First: LLC and S Corp Are Not the Same Kind of Thing
This trips up more contractors than any other part of the topic, and it’s not their fault — the names sound parallel.
An LLC is a legal entity. You form it with your state. It creates liability separation between you and the business. That’s its job.
An S Corp is a tax election. It’s a choice about how the IRS treats the income of an entity you already have. Your LLC can elect to be taxed as an S Corporation and remain, legally, the same LLC — same name, same contracts, same bonding, same license.
So the real question is almost never “LLC or S Corp.” It’s: should the LLC I already have be taxed as an S Corp?
The Math That Drives the Whole Decision
As a default single-member LLC, your entire net profit is subject to self-employment tax — Social Security and Medicare — on top of income tax. Every dollar of profit carries it.
Under an S Corp election, you split what the business earns into two buckets:
- A reasonable salary paid to you as a W-2 employee, which carries employment taxes like any paycheck.
- Distributions of remaining profit, which are not subject to self-employment tax.
That second bucket is the entire benefit. There is no other trick in the box.
Take a contractor with $180,000 of net profit and a defensible salary of $95,000 for the work he actually performs (example numbers). As a default LLC, all $180,000 rides the self-employment tax. With the election, roughly $85,000 shifts into distributions that don’t. Run the same exercise at $60,000 of profit and the shift is small enough that the costs below can eat the entire benefit.
That’s why “should I be an S Corp” has no universal answer. It has a threshold, and the threshold depends on your profit, your salary, your state, and how steady your year is.
Reasonable Salary Is the Part That Gets Contractors in Trouble
The temptation is obvious: if distributions avoid self-employment tax, pay yourself a tiny salary and distribute the rest.
The IRS is thoroughly familiar with that idea. Reasonable compensation is a real requirement, and an owner-operator running crews, pricing jobs, and pulling permits paying himself $20,000 while distributing $160,000 (example numbers) is the shape of a problem that gets found in an examination — with back employment taxes, penalties, and interest attached.
For contractors specifically, “reasonable” tends to key off what you’d have to pay somebody else to do your actual role. If you’re still swinging tools three days a week and running estimates the other two, that’s a working owner’s wage, not an absentee investor’s. Documenting how the number was set — role, hours, local market rates for that role — is what turns it from a guess into a defensible position.
The Costs Nobody Quotes You Up Front
The election isn’t free, and the recurring costs are what determine where your break-even actually sits:
- Real payroll. You become an employee. That means a payroll system, withholding, quarterly filings, and W-2s — even if you’re the only person on it.
- A separate business return. Form 1120-S every year, on top of your personal return.
- State-level treatment varies. Some states impose franchise taxes, minimum fees, or don’t recognize the election the way the federal government does.
- Less flexibility with cash. Owner draws stop being casual. The salary has to run on schedule whether February was good or not.
None of these are dealbreakers. All of them are real, ongoing, and worth pricing before you elect rather than discovering in month three.
When the Election Usually Isn’t Worth It — Yet
Contractors talk about the upside constantly and the downside almost never. Situations where waiting is often the better call:
- Profit is still modest. Below the threshold, the added compliance cost consumes the savings.
- Profit swings hard year to year. A required salary is a fixed obligation dropped into a business with seasonal cash. A rough winter doesn’t care about your payroll schedule.
- Most of the profit is already your wage. If a defensible salary is nearly all of the net income, there’s very little left to distribute — and very little to save.
- You’re heading toward a sale or bringing in a partner soon. Structure interacts with how a transaction gets taxed. That’s a conversation to have before the election, not after the letter of intent — see how buyers actually value a contracting business.
The Deadline Nobody Mentions Until It’s Passed
Form 2553 generally has to be filed within two months and fifteen days of the beginning of the tax year you want the election to apply to. Miss it and the election typically takes effect the following year.
There is late election relief available in many situations, and it’s routinely used — but relying on it is a worse plan than filing on time. If you’re weighing this for next year, the work happens now, in the fall, while there’s still room to model the numbers and set the salary properly.
Five Questions Before You Elect
- What’s my actual net profit this year — not revenue, not what’s in the account?
- What would I have to pay someone to do the job I personally do in this business?
- What will payroll, the extra return, and my state’s fees cost me every year?
- How steady is my profit across a full seasonal cycle?
- Am I planning to sell, add a partner, or bring in a family member in the next three years?
If you have clean answers to all five, the decision resolves itself. If you don’t, that’s not a tax problem — it’s a bookkeeping problem wearing a tax problem’s clothes, and it’s worth fixing first.
Where to Start
Entity structure is Level 2 of the free Contractor Growth Assessment. Five minutes, six scores, no phone call required — and it’ll tell you whether structure is your weak link or whether something further upstream is costing you more.
Take the free Contractor Growth Assessment →
This article is general information, not tax advice for your specific situation. Entity decisions depend on your numbers, your state, and your plans.
