A few years back, a buddy of mine—let’s call him Dave, because that’s his name and he won’t mind—texted me at 11 p.m. panicking because his accountant had just told him he owed $14,000 more in self-employment tax than he expected. He’d been running his consulting business as a single-member LLC for three years and nobody had ever mentioned that he could’ve structured things differently. He wasn’t doing anything wrong. He just didn’t know there was a decision to make.
That conversation turned into a two-hour phone call, three follow-up emails, and eventually, him switching his tax election. So let’s talk about the thing nobody explains clearly enough: how your business structure changes what you owe the IRS.
I want to be upfront about something first: this isn’t legal or financial advice, and I’m not your accountant. Business structure decisions depend on your specific income, state, and goals, so talk to a CPA before you act on any of this. What I can do is walk you through how these three structures actually work in practice, because most explanations online either drown you in jargon or oversimplify it into uselessness.
First, Let’s Clear Up a Common Confusion
Here’s the thing that trips almost everyone up: LLC and S-Corp aren’t actually the same type of thing. An LLC is a legal structure—it determines your liability protection and how you’re organized under state law. An S-Corp is a tax election—it determines how the IRS treats your income. You can have an LLC that elects to be taxed as an S-Corp. You can’t have “an LLC vs an S-Corp” in the pure sense, because they’re answering different questions.
A C-Corp, on the other hand, is both a legal structure and a default tax treatment. That’s the one everyone pictures when they think “corporation”—Apple, your local bank, that kind of thing.
Once that clicks, the rest of this gets a lot easier to follow.
The Default LLC: Simple, But It Can Cost You
When you form an LLC and do nothing else, the IRS taxes you as a sole proprietor (if you’re the only owner) or a partnership (if there’s more than one owner). This is called “pass-through” taxation—the business itself doesn’t pay tax. All the profit flows straight to your personal tax return.
Sounds great, right? One layer of tax instead of two. The catch is self-employment tax. That’s the 15.3% covering Social Security and Medicare, and with a default LLC, you pay it on all of your net business profit, not just a salary.
This is exactly what caught Dave. He was clearing around $140,000 a year in profit. Every dollar of that got hit with self-employment tax on top of regular income tax. That’s the trade-off with the default LLC: simplicity now, a bigger tax bill later once your profits climb.
If your business is new, your profit margins are thin, or you’re testing an idea, this simplicity is genuinely the right call. Don’t let anyone talk you into extra complexity you don’t need yet.
The S-Corp Election: Where the Real Savings Show Up
Once your profit gets comfortably above what a reasonable salary would look like for your work, the S-Corp election starts to make sense. Here’s the mechanism, in plain English.
With an S-Corp election, you split your income into two buckets:
- Salary — you pay yourself like an employee, and this portion is subject to payroll taxes (the same 15.3%, just labeled differently).
- Distributions — the remaining profit, which you take out of the business without paying self-employment tax on it.
This is the part that saved Dave real money. His accountant had him set a salary of $70,000 (a defensible number for his field), and the remaining roughly $70,000 came out as a distribution. He only paid payroll tax on the salary portion. That single change saved him somewhere in the ballpark of $8,000–9,000 a year.
I want to flag something important here, because I’ve seen people get greedy with this: the IRS requires you to pay yourself a “reasonable salary” for the work you actually do. You can’t pay yourself $20,000 and take $200,000 in distributions to dodge taxes—that’s a documented audit trigger, and the IRS has actually won court cases forcing business owners to reclassify distributions as wages, with penalties attached. Reasonable usually means: what would you pay someone else to do your job?
The other cost of the S-Corp election is administrative. You’ll need to run actual payroll, file additional forms, and probably pay a bookkeeper or accountant more than you did before. Generally, the savings only outweigh those added costs once your profit is comfortably above $60,000-$80,000, though the exact number depends on your state and industry.
The C-Corp: Misunderstood, But Not Useless
C-Corps get a bad reputation because of “double taxation”—the business pays corporate tax on its profits, and then you pay personal tax again when that money is distributed to you as dividends. For a small consulting shop or a single-owner service business, this is usually a genuinely bad deal.
But C-Corps aren’t a trap for everyone. They tend to make sense in a few specific situations:
You’re raising venture capital. Most institutional investors want a Delaware C-Corp before they’ll write a check. It’s the standard structure for equity, stock options, and multiple funding rounds.
You want to reinvest most of your profits back into the business. The flat 21% federal corporate tax rate can actually be lower than what a high-earning individual pays on pass-through income, if you’re leaving the money in the company rather than pulling it out.
You want to offer employee stock options or bring on outside shareholders. This is much cleaner structurally in a C-Corp than in an LLC or S-Corp.
If none of those describe your situation, a C-Corp is probably solving a problem you don’t have while creating one you didn’t want.
So Which One Actually Wins on Taxes?
Honestly? It depends entirely on your profit level and your goals, and I’d be doing you a disservice if I pretended there was one universal answer. But here’s a rough mental model I’ve seen play out with real business owners over and over:
- Under roughly $40,000-$50,000 in profit: stick with a default LLC. The S-Corp paperwork and payroll costs will eat up most of the tax savings.
- Comfortably above that, especially past $80,000-$100,000: the S-Corp election usually starts paying for itself, sometimes many times over.
- Raising outside investment or planning to reinvest heavily rather than take profits out: look seriously at a C-Corp, ideally with a lawyer involved from the start.
One more thing worth saying: none of this is a permanent decision carved in stone. Dave didn’t have to dissolve his LLC and start over—he simply filed Form 2553 with the IRS to elect S-Corp tax treatment on the same legal entity he already had. Structures can evolve as your business does.
The Real Lesson From Dave’s Story
Dave’s $14,000 surprise wasn’t really about tax law. It was about not knowing there was a choice to make in the first place. That’s the part that gets me—so many business owners aren’t overpaying because they made a bad decision. They’re overpaying because nobody ever laid out the options for them clearly.
If you take one thing from this article, let it be this: the moment your business starts generating consistent, meaningful profit, it’s worth a real conversation with a CPA about whether your current structure still fits. It’s a couple hundred dollars of their time against potentially thousands of dollars a year in taxes. That math tends to work out pretty easily.
LLC vs. S-Corp vs. C-Corp: Which Structure Actually Saves You the Most in Taxes?
A few years back, a buddy of mine—let’s call him Dave, because that’s his name and he won’t mind—texted me at 11 p.m. panicking because his accountant had just told him he owed $14,000 more in self-employment tax than he expected. He’d been running his consulting business as a single-member LLC for three years and nobody had ever mentioned that he could’ve structured things differently. He wasn’t doing anything wrong. He just didn’t know there was a decision to make.
That conversation turned into a two-hour phone call, three follow-up emails, and eventually, him switching his tax election. So let’s talk about the thing nobody explains clearly enough: how your business structure changes what you owe the IRS.
I want to be upfront about something first: this isn’t legal or financial advice, and I’m not your accountant. Business structure decisions depend on your specific income, state, and goals, so talk to a CPA before you act on any of this. What I can do is walk you through how these three structures actually work in practice, because most explanations online either drown you in jargon or oversimplify it into uselessness.
First, Let’s Clear Up a Common Confusion
Here’s the thing that trips almost everyone up: LLC and S-Corp aren’t actually the same type of thing. An LLC is a legal structure—it determines your liability protection and how you’re organized under state law. An S-Corp is a tax election—it determines how the IRS treats your income. You can have an LLC that elects to be taxed as an S-Corp. You can’t have “an LLC vs an S-Corp” in the pure sense, because they’re answering different questions.
A C-Corp, on the other hand, is both a legal structure and a default tax treatment. That’s the one everyone pictures when they think “corporation”—Apple, your local bank, that kind of thing.
Once that clicks, the rest of this gets a lot easier to follow.
The Default LLC: Simple, But It Can Cost You
When you form an LLC and do nothing else, the IRS taxes you as a sole proprietor (if you’re the only owner) or a partnership (if there’s more than one owner). This is called “pass-through” taxation—the business itself doesn’t pay tax. All the profit flows straight to your personal tax return.
Sounds great, right? One layer of tax instead of two. The catch is self-employment tax. That’s the 15.3% covering Social Security and Medicare, and with a default LLC, you pay it on all of your net business profit, not just a salary.
This is exactly what caught Dave. He was clearing around $140,000 a year in profit. Every dollar of that got hit with self-employment tax on top of regular income tax. That’s the trade-off with the default LLC: simplicity now, a bigger tax bill later once your profits climb.
If your business is new, your profit margins are thin, or you’re testing an idea, this simplicity is genuinely the right call. Don’t let anyone talk you into extra complexity you don’t need yet.
The S-Corp Election: Where the Real Savings Show Up
Once your profit gets comfortably above what a reasonable salary would look like for your work, the S-Corp election starts to make sense. Here’s the mechanism, in plain English.
With an S-Corp election, you split your income into two buckets:
- Salary — you pay yourself like an employee, and this portion is subject to payroll taxes (the same 15.3%, just labeled differently).
- Distributions — the remaining profit, which you take out of the business without paying self-employment tax on it.
This is the part that saved Dave real money. His accountant had him set a salary of $70,000 (a defensible number for his field), and the remaining roughly $70,000 came out as a distribution. He only paid payroll tax on the salary portion. That single change saved him somewhere in the ballpark of $8,000–9,000 a year.
I want to flag something important here, because I’ve seen people get greedy with this: the IRS requires you to pay yourself a “reasonable salary” for the work you actually do. You can’t pay yourself $20,000 and take $200,000 in distributions to dodge taxes—that’s a documented audit trigger, and the IRS has actually won court cases forcing business owners to reclassify distributions as wages, with penalties attached. Reasonable usually means: what would you pay someone else to do your job?
The other cost of the S-Corp election is administrative. You’ll need to run actual payroll, file additional forms, and probably pay a bookkeeper or accountant more than you did before. Generally, the savings only outweigh those added costs once your profit is comfortably above $60,000-$80,000, though the exact number depends on your state and industry.
The C-Corp: Misunderstood, But Not Useless
C-Corps get a bad reputation because of “double taxation”—the business pays corporate tax on its profits, and then you pay personal tax again when that money is distributed to you as dividends. For a small consulting shop or a single-owner service business, this is usually a genuinely bad deal.
But C-Corps aren’t a trap for everyone. They tend to make sense in a few specific situations:
You’re raising venture capital. Most institutional investors want a Delaware C-Corp before they’ll write a check. It’s the standard structure for equity, stock options, and multiple funding rounds.
You want to reinvest most of your profits back into the business. The flat 21% federal corporate tax rate can actually be lower than what a high-earning individual pays on pass-through income, if you’re leaving the money in the company rather than pulling it out.
You want to offer employee stock options or bring on outside shareholders. This is much cleaner structurally in a C-Corp than in an LLC or S-Corp.
If none of those describe your situation, a C-Corp is probably solving a problem you don’t have while creating one you didn’t want.
So Which One Actually Wins on Taxes?
Honestly? It depends entirely on your profit level and your goals, and I’d be doing you a disservice if I pretended there was one universal answer. But here’s a rough mental model I’ve seen play out with real business owners over and over:
- Under roughly $40,000-$50,000 in profit: stick with a default LLC. The S-Corp paperwork and payroll costs will eat up most of the tax savings.
- Comfortably above that, especially past $80,000-$100,000: the S-Corp election usually starts paying for itself, sometimes many times over.
- Raising outside investment or planning to reinvest heavily rather than take profits out: look seriously at a C-Corp, ideally with a lawyer involved from the start.
One more thing worth saying: none of this is a permanent decision carved in stone. Dave didn’t have to dissolve his LLC and start over—he simply filed Form 2553 with the IRS to elect S-Corp tax treatment on the same legal entity he already had. Structures can evolve as your business does.
The Real Lesson From Dave’s Story
Dave’s $14,000 surprise wasn’t really about tax law. It was about not knowing there was a choice to make in the first place. That’s the part that gets me—so many business owners aren’t overpaying because they made a bad decision. They’re overpaying because nobody ever laid out the options for them clearly.
If you take one thing from this article, let it be this: the moment your business starts generating consistent, meaningful profit, it’s worth a real conversation with a CPA about whether your current structure still fits. It’s a couple hundred dollars of their time against potentially thousands of dollars a year in taxes. That math tends to work out pretty easily.