What Is My LLC Tax Classification and How to Find It

Your LLC tax classification is set automatically by the IRS based on how many owners the business has, unless you file an election to change it. A single-member LLC is treated as a sole proprietorship (a “disregarded entity”), and a multi-member LLC is treated as a partnership. Either can elect to be taxed as a C-corporation or an S-corporation instead by filing the right form.¹

The Default Classifications

There is no dedicated LLC tax return. The IRS assigns your LLC one of the existing classifications and you file the forms that go with it.

Single-Member LLC

One owner means the IRS ignores the LLC as a separate taxpayer for income tax purposes. You report the business’s income and expenses on your personal Form 1040, usually on Schedule C, Schedule E, or Schedule F depending on the type of activity.²

The disregarded-entity treatment applies only to income tax. For employment and excise taxes, the LLC is a separate entity and needs its own Employer Identification Number. If you have employees, use the LLC’s EIN to report and pay employment taxes, not your Social Security number.²

Multi-Member LLC

Two or more owners means partnership treatment by default. The partnership files Form 1065 as an information return and issues each member a Schedule K-1 showing their share of income, losses, and deductions.³ The LLC itself pays no federal income tax; each member reports their K-1 amounts on their personal return.

These defaults apply whether the members are individuals or other entities, and they take effect automatically unless you file to change them.⁴

Electing Corporate or S-Corporation Treatment

You can override the default in one of two directions.

C-Corporation: Form 8832

To be taxed as a C-corporation, file Form 8832 (Entity Classification Election).¹ Once the election is in effect, the LLC becomes its own taxpayer. It files Form 1120 and pays a flat 21% federal corporate income tax on profits. Distributions to members are then taxed again as dividends on their personal returns, the setup commonly called double taxation.

The effective date you list on Form 8832 cannot be more than 75 days before you file or more than 12 months after. Enter a date outside that window and the IRS will adjust it for you.⁵

S-Corporation: Form 2553

To be taxed as an S-corporation, file Form 2553 (Election by a Small Business Corporation). Every shareholder has to sign it for the election to be valid.⁶ Like a partnership, the S-corporation passes income through to owners, so the business generally pays no federal income tax. Unlike partnership or sole-proprietor treatment, S-corporation status lets you split what you receive between wages and distributions, which can lower your self-employment tax bill.

Form 2553 is due no later than two months and 15 days after the start of the tax year in which you want it to take effect. For a calendar-year LLC, that means March 15. You can also file at any point during the prior tax year.⁷

An LLC that is not already classified as a corporation technically needs both elections. In practice, you can file Form 2553 alone and the IRS will treat the Form 8832 as implied.

S-Corporation Eligibility

Not every LLC qualifies. To elect S-corporation status, all of the following must be true:

The LLC is a domestic entity organized in the United States.
It has 100 shareholders or fewer, with family members counted as one shareholder.
Shareholders are only individuals, certain trusts, or estates. Partnerships, corporations, and nonresident aliens are not eligible.
There is only one class of stock, with identical rights to distributions and liquidation proceeds.
The entity is not an ineligible type such as certain financial institutions, insurance companies, or domestic international sales corporations.

Violating any of these conditions after the election is in place can terminate S-corporation status.⁸

What Each Classification Costs You

The classification you accept or choose changes both the kind of tax you pay and the total.

Default Treatment

Under disregarded-entity or partnership treatment, all net business income passed through to you is subject to self-employment tax. The combined rate is 15.3%: Social Security at 12.4% and Medicare at 2.9%. For 2026, the Social Security portion applies only to the first $184,500 of net earnings; the Medicare portion has no cap.⁹ Regular income tax applies on top of that at your individual rate.

C-Corporation Treatment

A C-corporation pays a flat 21% federal corporate income tax on its profits. Money you then take out as a dividend is taxed again on your personal return. The double layer is the main drawback, though the structure can work when profits are being reinvested rather than distributed.

S-Corporation Treatment

S-corporation status lets you split what you take out of the business between a W-2 salary and distributions. Only the salary portion is subject to Social Security and Medicare tax; distributions are not. Compared with the default, where every dollar of net income is hit by self-employment tax, this can produce real savings.

There is a limit. The IRS requires shareholder-employees to receive “reasonable compensation” as wages before taking distributions. Setting your salary artificially low to duck employment tax invites the IRS to reclassify your distributions as wages and assess the taxes plus penalties.¹⁰ Reasonable depends on the work you do, comparable pay in your industry, and the size of the business.

How to Find Your Current Classification

If you are not sure what the IRS has you as, three sources will tell you.

Your EIN Confirmation Letter

When the IRS assigned your EIN, it sent a confirmation letter, usually a CP 575 or CP 277. The letter lists the tax forms the IRS expects. Form 1040 with Schedule C means disregarded entity. Form 1065 means partnership. Form 1120 or 1120-S means corporation or S-corporation.¹¹

Your Most Recent Tax Return

The form you last filed is a direct read on your active classification. Form 1065 means you have been operating as a partnership. Form 1120-S means S-corporation.¹² Schedule C on your personal return means disregarded entity.

The IRS Business Line

For a direct answer, call the IRS Business and Specialty Tax Line at 800-829-4933, Monday through Friday, 7 a.m. to 7 p.m. local time. Have your EIN, the LLC’s legal name, and its address ready. The agent can confirm which elections are on file and whether they are active.¹³ If your operating agreement names a classification that does not match what the IRS shows, the IRS record controls.

If You Missed the Deadline

A late election can still be approved retroactively. Under Revenue Procedure 2013-30, the IRS grants relief for a late S-corporation election when all of the following are true:

The entity intended to be an S-corporation and was otherwise eligible.
The only reason it did not qualify was the late filing.
The entity and all shareholders reported their income consistently as if the election had been in effect.
Fewer than three years and 75 days have passed since the intended effective date.

The same three-year-and-75-day window applies to a late Form 8832, filed with a statement explaining the delay.¹⁴ Outside that window, the remaining option is a private letter ruling from the IRS, which carries a fee and takes longer.⁵

The 60-Month Lock After Changing

Once you change classification by filing Form 8832, you generally cannot change again for 60 months from the effective date. An election effective January 1, 2024 typically cannot be changed until January 1, 2029.⁴

Two exceptions matter. The 60-month rule does not apply to a newly formed LLC whose first election was effective on the date of formation, because the initial choice is not a change. And the IRS may waive the restriction by private letter ruling if more than 50% of the ownership interests have changed hands since the last election.⁵

State Rules Are Separate

Federal classification does not decide how your state taxes the LLC. Some states impose entity-level taxes, franchise taxes, or gross receipts taxes on LLCs regardless of what you elected federally. Others follow the federal classification but add their own filings. Check with your state’s tax agency to confirm what returns and taxes apply.¹⁵

1
Internal Revenue Service. LLC Filing as a Corporation or Partnership
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Internal Revenue Service. Single Member Limited Liability Companies
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Internal Revenue Service. 2025 Instructions for Form 1065
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eCFR. 26 CFR 301.7701-3 – Classification of Certain Business Entities
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Internal Revenue Service. Form 8832 – Entity Classification Election
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Internal Revenue Service. Form 2553 – Election by a Small Business Corporation
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Internal Revenue Service. Instructions for Form 2553
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Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
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Social Security Administration. 2026 Cost-of-Living Adjustment Fact Sheet
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Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
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Internal Revenue Service. Form SS-4 – Application for Employer Identification Number
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Internal Revenue Service. Instructions for Form 1120-S (2025)
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Internal Revenue Service. Telephone Assistance Contacts for Business Customers
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Internal Revenue Service. Late Election Relief
15
Internal Revenue Service. Limited Liability Company (LLC)