What Is My LLC Tax Classification? Default Rules and Elections

Your LLC’s tax classification is the framework the IRS uses to tax it, and there are four possibilities: disregarded entity, partnership, C-corporation, or S-corporation. The IRS assigns one automatically based on how many owners you have, but you can override the default by filing an election. A single-member LLC is a disregarded entity by default; a multi-member LLC is a partnership. Either one can elect corporate treatment by filing Form 8832, and either can elect S-corp treatment by filing Form 2553.¹

Which classification you land in changes what forms you file, when you file them, and how much you owe in self-employment tax. Here is what each one means and how to decide.

Single-Member LLC: Disregarded Entity by Default

If you’re the only owner, the IRS treats your LLC as a disregarded entity under the check-the-box regulations.¹ The business isn’t a separate taxpayer for federal income tax. You report profit and loss on Schedule C of your personal Form 1040, the same way a sole proprietor does. No separate business return.

The cost of that simplicity is self-employment tax. All net earnings are subject to a combined 15.3 percent rate: 12.4 percent for Social Security and 2.9 percent for Medicare.² The Social Security portion applies only up to the annual wage base, which is $184,500 for 2026.³ Earnings above that still owe the 2.9 percent Medicare tax, and an additional 0.9 percent Medicare surtax kicks in once earned income exceeds $200,000 ($250,000 for joint filers).

Multi-Member LLC: Partnership by Default

An LLC with two or more owners is automatically classified as a partnership.¹ The partnership itself doesn’t pay income tax. It files an informational return, Form 1065, showing how profits, losses, deductions, and credits are split among members.⁴ Each member gets a Schedule K-1 with their share and reports it on their personal return.

Because income passes through, each member typically owes self-employment tax on their share of net earnings. The partnership structure creates no special shield against that liability. Both default classifications apply automatically the moment the LLC begins operating; no paperwork is required to accept them.

Electing C-Corporation Taxation

Any LLC can elect C-corporation treatment by filing Form 8832 with the IRS.⁵ The LLC becomes a separate taxpayer, pays a flat 21 percent corporate income tax on profits, and if it distributes those profits as dividends the owners pay tax again on their personal returns. That is the double taxation people associate with C-corps.⁶

Double taxation sounds unappealing, but C-corp status has real uses. Profits retained in the business are taxed only at 21 percent, with no self-employment tax on them. Owners who work in the business receive wages subject to normal payroll taxes rather than pass-through income. Qualified dividends paid to individual shareholders are taxed at preferential capital gains rates of 0, 15, or 20 percent depending on the shareholder’s total taxable income. For LLCs that plan to reinvest most of their earnings or bring in outside investors, C-corp taxation can pencil out.

Electing S-Corporation Taxation

The S-corp election is the most popular alternative for small LLCs because it keeps pass-through taxation while potentially cutting self-employment tax. An S-corp owner who works in the business receives a salary subject to payroll taxes and can take additional profits as distributions that are not subject to the 15.3 percent self-employment tax. The gap between salary and total profit is where the savings live.

The eligibility rules are strict. Under federal law, the LLC must:⁷

Have no more than 100 shareholders.
Limit shareholders to individuals, estates, and certain qualifying trusts. Corporations, partnerships, and most other entities cannot be shareholders.
Have no nonresident alien shareholders. Every owner must be a U.S. citizen or resident.
Issue only one class of stock. Voting rights can differ across members, but economic rights (distributions and liquidation proceeds) must be identical.

Violating any of these terminates the S-election, sometimes retroactively, which creates a messy tax situation. If your LLC has a foreign co-owner or another business entity as a member, S-corp treatment is not available.

The Reasonable Compensation Requirement

The IRS closely scrutinizes S-corp owner-employees who pay themselves a small salary and take the rest as distributions to minimize payroll taxes. Any shareholder who performs services for the business must receive “reasonable compensation” before taking distributions.⁸ Courts have consistently recharacterized distributions as wages when shareholder-employees paid themselves unreasonably low salaries, or none at all.

There is no single IRS formula. The agency looks at the nature and scope of the work, prevailing pay for similar roles in comparable businesses, the time devoted to the company, and the ratio of salary to distributions. An LLC with $300,000 in net income where the sole owner-operator pays herself $30,000 is practically inviting an audit. A defensible salary grounded in market data is the price of admission for the tax savings.

How to File the Election

Form 8832 for C-Corporation Treatment

To elect C-corporation status, or to switch from a corporate classification back to a disregarded entity or partnership, file Form 8832.⁵ The form asks for the LLC’s legal name as it appears on your state formation documents, the business address, and your EIN. Every member at the time of the election must sign or authorize a representative to sign.

The timing rules are more flexible than many owners realize. You can backdate the election up to 75 days before the filing date or set a future effective date up to 12 months after filing.⁹ Enter a date outside either boundary and the IRS adjusts it to the nearest valid date rather than rejecting the form. One catch: once you change classification through Form 8832, the IRS generally will not allow another change for 60 months without its permission.

Form 2553 for S-Corporation Treatment

S-corp election uses a different form, Form 2553.¹⁰ Every shareholder who consents to the election must sign, and the form asks for each shareholder’s name, address, and taxpayer identification number. To take effect in the current tax year, Form 2553 must generally be filed no later than two months and 15 days after the start of that year. For a calendar-year LLC, that is March 15. File after that date and the election pushes to the following tax year.

A brand-new LLC that hasn’t filed Form 8832 can skip it and go straight to Form 2553. The S-corp election implicitly treats the LLC as a corporation first, then makes the S-election, both through the single form.⁹

Late Election Relief

Missing a deadline doesn’t necessarily lock you into the wrong classification for a full year. Revenue Procedure 2013-30 provides relief for a late Form 2553 if you file within three years and 75 days of the intended effective date, had reasonable cause for filing late, and you and all shareholders have been filing consistent with S-corp status since the intended effective date.¹¹ Every shareholder signs the late Form 2553 and includes a statement confirming they reported income consistently on all affected returns.

Revenue Procedure 2009-41 offers parallel relief for a late Form 8832. The entity must file within three years and 75 days of the requested effective date, have reasonable cause for the delay, and have filed all returns consistent with the intended classification.⁹ You check the late-relief box on the form and explain the delay on Line 11.

Return Deadlines and Late Penalties

Each classification comes with its own return and due date, and missing a deadline can be expensive, especially for partnerships and S-corps where the penalty multiplies by the number of owners.

Disregarded entity: Schedule C, filed with your Form 1040, due April 15.
Partnership: Form 1065, due the 15th day of the third month after year-end (March 15 for calendar-year LLCs). Schedule K-1s go to partners by the same date.¹²
S-corporation: Form 1120-S, same deadline as partnerships (March 15 for calendar-year LLCs), with K-1s to shareholders by that date.¹²
C-corporation: Form 1120, due the 15th day of the fourth month after year-end (April 15 for calendar-year LLCs).¹²

For returns due after December 31, 2024, the late-filing penalty for partnerships and S-corps is $245 per month (or partial month), multiplied by the number of partners or shareholders, for up to 12 months.¹³ A four-member LLC that files three months late owes $2,940 in penalties before any interest on unpaid tax. Because these are informational returns, the penalty applies even when no tax is owed.

Choosing the Right Classification

The right classification depends on how much your business earns, how much you plan to reinvest, and how much you can defensibly pay yourself.

For a single-owner freelancer or consultant with modest income, the disregarded-entity default keeps things simple and avoids the cost of a separate business return. Once net earnings climb high enough that the self-employment tax bill becomes painful, and you can justify a reasonable salary well below total profit, the S-corp election starts to make financial sense. C-corp election tends to appeal to LLCs that plan to retain significant earnings, issue stock to investors, or eventually go public.

One factor worth watching: pass-through LLC owners may be eligible for the Section 199A qualified business income deduction, which allows up to a 20 percent deduction on qualified business income. For 2026, the deduction begins to phase out for single filers with taxable income above $201,750 and joint filers above $403,500. C-corporation LLCs are not eligible, since the deduction applies only to pass-through income. For an LLC on the fence between pass-through and C-corp status, the 199A deduction can shift the math meaningfully.

1
eCFR. 26 CFR 301.7701-3 – Classifications of Certain Business Entities
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Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
3
Social Security Administration. If You Are Self-Employed
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Internal Revenue Service. About Form 1065, U.S. Return of Partnership Income
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Internal Revenue Service. About Form 8832, Entity Classification Election
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Internal Revenue Service. LLC Filing as a Corporation or Partnership
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Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
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Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers
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Internal Revenue Service. Form 8832 Entity Classification Election
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Internal Revenue Service. About Form 2553, Election by a Small Business Corporation
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Internal Revenue Service. Revenue Procedure 2013-30
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Internal Revenue Service. Publication 509 (2026), Tax Calendars
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Internal Revenue Service. Information About Your Notice, Penalty and Interest