LLC vs. S Corp (Which is right for me?)

Many business owners hear about the “S-Corp” and wonder if they should form one instead of an LLC. But here is the important thing to understand: an S-Corp is not a type of business structure. It is a tax election. An LLC can choose to be taxed as an S-Corp while remaining an LLC under state law. This guide explains how it works, when it saves money, and whether it makes sense for your business.

LLC vs S-Corp: Quick Comparison

What Is an LLC?

A limited liability company (LLC) is a business structure formed under state law. It provides liability protection to its owners (called members), meaning their personal assets are generally protected from business debts and lawsuits. You form an LLC by filing articles of organization with your state and paying a filing fee.

By default, the IRS treats a single-member LLC as a “disregarded entity,” meaning it is taxed the same as a sole proprietorship. A multi-member LLC is taxed as a partnership by default. In both cases, all business profits pass through to the owners’ personal tax returns. The owners pay income tax and self-employment tax (Social Security and Medicare) on all net business income.

The self-employment tax rate is 15.3% (12.4% for Social Security on income up to $168,600 in 2024, plus 2.9% for Medicare on all income). This tax applies to the full amount of net business income for a standard LLC. You can learn more about LLCs in our complete LLC guide.

What Is an S-Corp?

An S-Corp is not a business structure you form with a state. It is a federal tax classification. Any LLC (or corporation) can elect S-Corp taxation by filing IRS Form 2553. When you make this election, the LLC remains an LLC under state law, with the same operating agreement, liability protection, and flexibility. Only the way it is taxed by the IRS changes.

The key advantage of S-Corp taxation is how it handles self-employment tax. With S-Corp status, the owner must pay themselves a “reasonable salary” and run payroll. Self-employment taxes (Social Security and Medicare) are only paid on that salary. Any remaining profit can be taken as a distribution, which is not subject to self-employment tax. This can result in significant tax savings for profitable businesses.

However, S-Corp taxation comes with requirements. The LLC must have no more than 100 owners, all owners must be U.S. citizens or permanent residents, and there can be only one class of ownership interest. The LLC must also file a separate S-Corp tax return (Form 1120-S) each year, which is more complex and costly than a standard LLC filing.

Key Differences Between LLC and S-Corp Taxation

Self-Employment Tax

This is the main reason business owners consider the S-Corp election. With a standard LLC, all net business income is subject to self-employment tax at 15.3%. With S-Corp taxation, only the owner’s salary is subject to these payroll taxes. Distributions are not.

Here is an example using $120,000 in net business profit:

• Standard LLC: The full $120,000 is subject to self-employment tax. At 15.3%, that is approximately $18,360 in self-employment tax (in addition to income tax).
• LLC with S-Corp election: The owner pays themselves a reasonable salary of $70,000 and takes the remaining $50,000 as a distribution. Self-employment tax (payroll tax) is only paid on the $70,000 salary: approximately $10,710. The $50,000 distribution is not subject to self-employment tax. Total savings: approximately $7,650 per year.

That $7,650 in annual savings is real money. But it must be weighed against the added costs and complexity of running payroll and filing an S-Corp tax return.

Reasonable Salary Requirement

If you elect S-Corp taxation, the IRS requires that you pay yourself a “reasonable salary” before taking distributions. This salary must be comparable to what someone in a similar role with similar experience would earn in your industry and location.

You cannot set your salary at an unreasonably low amount just to minimize payroll taxes. The IRS watches for this, and if your salary is deemed too low, they can reclassify your distributions as salary and charge back taxes, penalties, and interest. A good rule of thumb is that your salary should be at least 40-60% of your business’s net income, depending on your industry and role.

Payroll and Accounting

A standard LLC does not need to run payroll for its owners. Owners simply take draws or distributions from the business. With S-Corp taxation, you must set up and run payroll for yourself (and any other owner-employees). This means filing payroll tax returns quarterly, issuing W-2s at year end, and paying employer payroll taxes.

The cost of running payroll through a service like Gusto or ADP is typically $40-$100 per month. You will also likely need an accountant to file the S-Corp tax return (Form 1120-S), which costs $500-$2,000 per year depending on complexity. These costs can eat into the tax savings, especially for businesses with lower profits.

Tax Filing

A single-member LLC reports business income on Schedule C of the owner’s personal tax return. This is simple and inexpensive. An LLC with S-Corp taxation must file Form 1120-S, a separate corporate tax return, in addition to the owner’s personal return. Form 1120-S has more requirements, including balance sheets, income statements, and shareholder basis tracking.

Ownership Restrictions

A standard LLC has no restrictions on who can be a member. Individuals, other LLCs, corporations, trusts, and foreign nationals can all be LLC members. An LLC with S-Corp taxation is limited by S-Corp rules: no more than 100 shareholders, only U.S. citizens or permanent residents (or certain trusts), and only one class of ownership. If you violate these rules, the IRS can revoke the S-Corp election.

When to Choose Standard LLC Taxation

Keeping the default LLC tax treatment makes more sense in these situations:

• Your business earns less than $40,000-$50,000 in annual net profit. At lower income levels, the self-employment tax savings from an S-Corp election are too small to offset the added payroll and accounting costs.
• You are just starting out and your income is unpredictable.
• You want the simplest possible tax filing and bookkeeping.
• You have foreign owners or investors who would not qualify under S-Corp rules.
• You want maximum flexibility in how profits are distributed among owners.
• You prefer to avoid the hassle and cost of running payroll.

When to Choose S-Corp Taxation

Electing S-Corp taxation typically makes sense in these situations:

• Your business consistently earns more than $50,000 in annual net profit.
• You are a service-based business (consultant, freelancer, agency) with high margins and low overhead.
• You are comfortable running payroll and maintaining more detailed financial records.
• You are willing to pay for an accountant to handle the S-Corp tax return.
• All of your owners are U.S. citizens or permanent residents.
• You want to reduce your self-employment tax burden by thousands of dollars per year.

Frequently Asked Questions

Do I need to form a new business to get S-Corp taxation?

No. If you already have an LLC, you can elect S-Corp taxation by filing IRS Form 2553. You do not need to dissolve your LLC or form a new entity. Your LLC stays the same under state law. Only the federal tax treatment changes.

When should I make the S-Corp election?

Form 2553 must be filed no later than 2 months and 15 days after the beginning of the tax year in which you want the election to take effect. For a calendar-year business, that means filing by March 15. You can also file during the prior tax year. If you miss the deadline, the IRS may grant late relief if you have a reasonable cause.

How much does S-Corp taxation save?

Savings depend on your income level. At $80,000 in profit, you might save $3,000-$5,000 per year. At $120,000, savings can be $6,000-$8,000 or more. At $200,000+, savings can exceed $10,000. These figures vary based on the reasonable salary you set and your specific tax situation.

What happens if I set my salary too low?

If the IRS determines your salary is unreasonably low, they can reclassify your distributions as wages. You would owe back payroll taxes, plus penalties and interest. The IRS looks at your industry, experience, hours worked, and comparable salaries. It is best to work with an accountant to set a salary that will hold up to IRS scrutiny.

Can I switch back to standard LLC taxation?

Yes, but there are restrictions. Once you revoke an S-Corp election, you generally cannot re-elect S-Corp status for five tax years without IRS consent. Make sure the S-Corp election is right for you before filing.

Does every state recognize the S-Corp election?

Most states follow the federal S-Corp election for state tax purposes. However, some states (like California, New York, and New Jersey) impose additional taxes or fees on S-Corps. Check your state’s rules before making the election.

Can a single-member LLC elect S-Corp taxation?

Yes. A single-member LLC can file Form 2553 and be taxed as an S-Corp. The owner becomes both an employee (receiving a salary) and a shareholder (receiving distributions). This is one of the most common uses of the S-Corp election.

Is an S-Corp the same as an S-Corporation?

Yes, the terms are interchangeable. Both refer to the same federal tax classification under Subchapter S of the Internal Revenue Code. Remember, it is a tax election, not a type of business entity. Both LLCs and corporations can elect S-Corp taxation.