Everyone Says Elect S-Corp at $40K. The Real Number Is Higher.

The advice is everywhere and it's always delivered with total confidence. "The moment your LLC clears $40,000 in profit, elect S-corp status and start saving on taxes." Sometimes the magic number is $50K. Sometimes $30K. The confidence never changes, only the number does.

That confidence is the problem. For most solo software founders, electing S-corp at $40,000 of profit either saves nothing or quietly loses money once you count what the election actually requires you to do. The real breakeven sits higher than the internet claims, and where it lands depends on your state, your bookkeeping, and how much you enjoy running payroll for an audience of one.

Let me walk through the math nobody puts next to the $40K claim. None of this is tax advice. Talk to a CPA before you file anything. But you should see the full picture first.

What the election actually does

As a default LLC, your profit is hit with self-employment tax: 15.3% total, which is 12.4% for Social Security on the first $184,500 of earnings in 2026, plus 2.9% for Medicare on all of it. That's on top of regular income tax.

The S-corp election (Form 2553) splits your income in two. You pay yourself a "reasonable" salary as a W-2 employee, and that salary carries the payroll taxes. Everything above the salary comes to you as a distribution, which is not subject to that 15.3%. The savings is 15.3% of whatever you can take as distribution instead of salary.

A clean example. Your business nets $120,000. You pay yourself an $80,000 salary and take $40,000 as a distribution. You've avoided roughly 15.3% on that $40,000, which is about $6,100 in saved self-employment tax. That number is why the advice exists, and at $120K of profit it's a decent reason to elect.

Now watch what happens when you subtract the costs the advice never mentions.

The costs nobody subtracts

Once you elect, you're an employer with an employee (you), and that comes with overhead that recurs every year whether your profit is high or low.

You need payroll. Real payroll, with quarterly filings and a W-2 at year end. Gusto or a competitor runs $40 to $50 a month plus a per-person fee, so call it $500 to $700 a year just to pay yourself correctly. You need a second tax return, because the S-corp files its own Form 1120-S separate from your 1040, complete with a balance sheet. Almost nobody does that one themselves, and a CPA who does it well charges somewhere between $800 and $1,800. You need clean books to support that return, so if you were running on a shoebox, that's an upgrade you're now paying for.

And you need to pay yourself a genuinely reasonable salary. The IRS requires it, and a tiny salary paired with a giant distribution is one of the better-known audit triggers. For an experienced software founder doing the work of both a senior engineer and a CEO, "reasonable" is not a small number. The higher your required salary, the smaller your distribution, the smaller your savings. The election fights itself.

Add the payroll, the second return, and the bookkeeping and you're looking at something like $1,500 to $3,000 a year in fixed cost. Fixed is the key word. That cost doesn't shrink when your profit is modest. So at $40,000 of profit, after a reasonable salary your distribution is small, your savings might be $1,000 to $2,000, and you just spent $2,000-plus to capture it. You're underwater, and you added a pile of paperwork for the privilege.

Where the breakeven really lands

Net the fixed costs against the 15.3% you save on the distribution, and for a typical solo founder the breakeven shows up closer to $80,000 to $100,000 of net profit, not $40,000. Below that range, the costs eat the savings. Above it, the election pulls ahead, and by $150K or so it's usually a clear win.

I won't hand you a single magic threshold, because anyone who does is guessing at your situation. Your number depends on what a reasonable salary is for your role, what your CPA charges, and your state. But "$40K and you're saving money" is, for most solo software founders, simply not true once the real costs are in the picture. This is the same conclusion I reached in the post on whether software founders even need an LLC, and it's worth repeating because the $40K figure refuses to die.

The part the $40K crowd forgets: your state

The election is a federal move, but it has state-level side effects, and in a high-tax state those can erase a good chunk of the benefit.

California taxes S-corps at 1.5% of net income with an $800 minimum, an entity-level tax your plain LLC wouldn't owe in the same way. New York City doesn't recognize the S election at all for its city tax and taxes you as a C-corp at the local level. Tennessee taxes S-corps under its franchise and excise tax regardless of what you elected federally. Other states are perfectly friendly about it.

The lesson is to run your numbers with your state plugged in, not the generic federal version from a national blog. A $90K-profit founder in a no-income-tax state and a $90K-profit founder in California can land on opposite sides of the decision.

The deadline people miss, and the relief they don't know about

If you want the S election to apply for the current tax year, Form 2553 is generally due within two months and fifteen days of the start of that year. For a calendar-year business, that's around March 15. Miss it and, on paper, your election doesn't start until next year.

Except there's a back door most people don't know about. Revenue Procedure 2013-30 lets you file a late election up to three years and 75 days after the date you wanted it effective, as long as you had reasonable cause and have otherwise been acting like an S-corp. So when your CPA tells you in November that you should have elected back in March, you're usually not stuck waiting a full year. You file late with the relief language attached. Don't assume the window slammed shut.

A saner way to decide

Don't elect because you crossed a number on a screenshot. Elect when the recurring savings clearly beat the recurring costs with your real salary and your real state in the math, and when your profit is stable enough that you trust it to stay there. A founder whose profit spiked to $90K this year but could fall to $30K next year might not want a payroll-and-1120-S machine grinding away through the lean year.

Here's the sequence I'd actually follow. Start as a default LLC. Keep clean books from day one, which you want regardless. When your profit clears the $80K-ish range and looks like it'll stay there, pay a CPA for an hour to run your specific numbers. That conversation costs a couple hundred dollars and will tell you more than any article, this one included.

Where QuickBiz fits

QuickBiz forms your LLC with default tax treatment, which is the correct starting point for exactly the reasons above. We don't nudge you into an S-corp election at formation, because at formation you almost never have the profit to justify the payroll and the extra return. Electing early just means paying the costs before there's anything to save. When your P&L finally says it's time, your CPA files the 2553 and you flip the switch.

If you're still at the very start of this and not sure you even need the LLC yet, start here once you do. The S-corp question can wait until your numbers earn it.