LLC vs. S Corp: What the Comparison Actually Means for Your Taxes
An LLC is a business structure you form with the state. An S corp is a federal tax election that an LLC or a corporation can make — they are not two alternatives to choose between, and the real question is how your existing LLC is taxed.
How a Default LLC Is Taxed Before Any Election
Most owners form an LLC and never revisit the tax treatment. That default matters, because it is the baseline the S corp election is measured against.
Single-Member and Multi-Member LLCs
A single-member LLC is disregarded by the IRS. Its profit flows directly onto the owner's personal return, usually on Schedule C. A multi-member LLC files a partnership return and issues each owner a K-1 showing their share of the income. In both cases, the net earnings reach the owner and carry self-employment tax.
Self-employment tax runs 15.3 percent on net earnings: 12.4 percent for Social Security, applied up to the annual wage base, and 2.9 percent for Medicare with no cap above that. On $100,000 of net profit, that is roughly $14,130 in self-employment tax before federal income tax is added. That number is the entire reason the S corp election gets discussed, and it is the one figure most other pages on this topic leave out.
The Self-Employment Tax Rate
How the S Corp Election Changes the Tax Picture
The Reasonable Compensation Requirement
When an LLC elects S corp status, the owner must go on payroll and receive a W-2 wage for the work they perform. That wage is subject to employment taxes — the same Social Security and Medicare that apply to any employee, split between employer and employee. The IRS measures "reasonable" against what the role would cost to hire out: the hours, the nature of the work, and what the market pays for it. A wage set too low is the specific thing the IRS looks for in an S corp examination.
Where the Savings Come From
Profit distributed above the reasonable wage is not subject to self-employment tax. If an owner earns $180,000 in net profit and takes a reasonable wage of $80,000, the remaining $100,000 in distributions may avoid the 15.3 percent self-employment tax that would have applied under the default LLC setup. That gap is the savings case. The wage is what limits it.
The Payroll Obligation
Electing S corp status creates a payroll obligation the same day the election takes effect. The business will need to run payroll, withhold and remit employment taxes, file quarterly payroll returns, and issue a W-2 at year end. Our payroll services can handle that obligation so it does not become a recurring burden on the owner.
What the S Corp Election Does Not Do
Electing S corp status does not change your liability protection. That protection comes from the LLC or corporation itself and stays in place regardless of how the entity is taxed. An S corp is also not automatically the better choice. For a business with modest profit, or an owner who pays themselves most of the earnings as wages anyway, the filing costs can outweigh the tax saving. Both of those are real outcomes, not edge cases.
State Treatment Changes the Math
The federal calculation is the same everywhere, but state tax treatment is not. Florida has no personal income tax, so the comparison there runs on federal employment taxes alone. A state with an income tax adds another layer to the analysis. If you are in Florida, our Tallahassee office handles this comparison regularly. If you are in Georgia, our Atlanta practice covers the state-specific side as well.
What It Actually Costs to Run an S Corp
Every page that explains the S corp savings without covering the cost side is selling something. Here is the cost side.
The Recurring Filing Burden
Running an S corp means maintaining a payroll system, filing quarterly employment tax returns, registering for state unemployment, issuing W-2s at year end, filing a separate S corp business return (Form 1120-S), and issuing K-1s to each owner. The books also need to be kept to a standard the return can be built from, which means clean, current records throughout the year — not a catch-up project in March.
The Break-Even Calculation
The self-employment tax saving scales with the profit above a reasonable wage. The cost of running the S corp is roughly fixed, regardless of profit. Those two lines cross somewhere, and where they cross depends on your profit, your reasonable wage, your state, and the nature of your work. Running that calculation on a specific set of numbers is what makes the answer useful. We can do that in one conversation. If you want to work through your own numbers before we talk, our tax preparation and planning page covers the broader context.
When the Election Is Worth Making — and When It Is Not
The election tends to make sense when profit is high enough that the self-employment tax saving meaningfully exceeds the added filing and payroll costs. It tends not to make sense when profit is modest, when the owner's reasonable wage would consume most of the profit anyway, or when the owner is already close to the Social Security wage base from other income. Neither answer is universal, and the right one requires looking at actual numbers.
The Election Mechanics and Deadline
The S corp election is made by filing Form 2553 with the IRS. For a calendar-year business, the election is generally due no more than two months and fifteen days into the tax year it applies to — March 15. It can also be filed at any point during the preceding year. Missing that date is how most owners end up waiting another full year. Late election relief does exist for businesses that intended to elect and missed the deadline, so a missed date is not always the end of it — but asking the question in the fall is a better position than finding out in April.
Who Can Elect S Corp Status
Not every business is eligible. The S corp election is available to entities with a limited number of shareholders, where all owners are individual U.S. citizens or residents, with only one class of stock, and with no corporate or partnership owners. If the ownership structure does not meet those requirements, the election is not available regardless of the profit level.
How the Structures Compare at a Glance
This is not a table — it is a side-by-side read on the questions that actually matter when you are trying to make this decision.
Default LLC (No S Corp Election)
- Taxed as a disregarded entity (single-member) or partnership (multi-member) by default
- Profit reported on the owner's personal return via Schedule C or K-1
- Owner is not on payroll; no W-2 required
- Net earnings subject to self-employment tax at 15.3 percent
- One business return if multi-member; no separate return for single-member
- No ownership restrictions under the LLC structure itself
LLC with S Corp Election
- Taxed as an S corporation at the federal level
- Profit flows to owners via K-1; wages flow via W-2
- Owner must be on payroll at a reasonable wage
- W-2 wages subject to employment tax; distributions above the wage are not subject to self-employment tax
- Separate S corp return (Form 1120-S) required annually
- Ownership restricted: individual U.S. citizens or residents only, one class of stock, limited number of shareholders
Other Structures Worth Knowing
Sole proprietorship is the default for anyone operating without a formal entity. It carries no liability separation and all net income is subject to self-employment tax. A general partnership is the default for two or more owners operating together — same tax treatment, no liability protection. A C corporation is taxed at the entity level before any distribution to owners, which creates a different set of planning considerations. Most small business owners are choosing between the LLC options above, but the starting point matters and it is worth knowing what you are actually working with.
Situations That Bring Owners to This Decision
The entity question does not always come up at the start. These are the moments that tend to surface it.
Starting a New Business
A new owner typically forms an LLC because that is the standard advice, and the tax treatment gets deferred. Starting with the right setup is easier than changing it later, and knowing what the default election means before the first year of profit is filed is worth the conversation.
Profit Has Grown Past What the Current Setup Handles
This is the most common trigger. An owner who has been filing as a default LLC for several years starts to notice the self-employment tax line on their return and asks whether there is a better way. If profit has grown, the answer may have changed since the entity was formed.
Why Owners Work with Collins Income Tax Solutions
We have been doing this work for fifteen years, with seventeen years of individual and business tax experience behind it. The office carries roughly sixty years of combined experience across the team.
Craig Collins works directly with owners on questions like this one. The S corp comparison is one of the most consistently misexplained topics in small business tax, and the way we handle it is the same way we handle every complicated return: we explain the mechanism before we say what it means for your money. You leave the conversation knowing what the election does, what it costs, and whether the math works for your specific situation — not with a recommendation handed to you without context.
We work with construction trades, retailers, professional service firms, and small business owners across a range of industries. Clients who are behind on filings or have let the entity question sit for years get caught up without judgment. Se habla español.
Schedule a Conversation About Your Entity Structure
Is an S corp better than an LLC for taxes?
It depends on your profit level, your reasonable wage, and what it costs to run the S corp filing structure. The self-employment tax saving can be meaningful at higher profit levels, but the added filing burden — payroll, quarterly returns, a separate business return — is a real and recurring cost. Whether those two cross in your favor requires running the numbers on your specific situation.Can an LLC be taxed as an S corp?
Yes. An LLC does not change its state formation status when it makes the S corp election — it remains an LLC under state law. The election only changes how the IRS treats the income. The LLC structure and any liability protection it provides stay in place.What is the S corp election deadline?
For a calendar-year business, Form 2553 is generally due no more than two months and fifteen days into the tax year — March 15. It can also be filed at any point during the preceding calendar year. Late election relief is available for businesses that intended to elect and missed the date, so a missed deadline is worth discussing before assuming the year is lost.What does "reasonable compensation" mean for an S corp owner?
The IRS measures reasonable compensation against what the role would cost to hire out on the open market, accounting for the hours worked, the nature of the work, and what comparable positions pay. A wage set significantly below market is the specific issue the IRS looks for in an S corp examination. There is no single formula — it is a judgment based on the owner's actual role in the business.Does an S corp election change my liability protection?
No. Liability protection comes from the LLC or corporation itself, not from how it is taxed. Electing S corp status changes the federal tax treatment of the income — it has no effect on the liability separation the entity provides under state law.
