For federal tax purposes, an LLC isn’t its own type of business. The IRS taxes a limited liability company as one of four things: a sole proprietorship, a partnership, a C-Corporation, or an S-Corporation. Which one applies depends on how many owners the LLC has and whether the owners file an election to change the default.1Internal Revenue Service. Limited Liability Company (LLC) So when someone asks what type of business an LLC is for taxes, the honest answer is another question: how is it set up, and has anything been filed?
The LLC itself is a state-law creation. The tax classification sits on top of it and can be changed without touching the underlying entity. Your liability protection, management structure, and state registration stay the same whether you’re taxed as a sole proprietor or a corporation.
Single-Member LLC: Taxed as a Sole Proprietorship by Default
An LLC with one owner is a “disregarded entity” for federal income tax purposes.2Internal Revenue Service. Single Member Limited Liability Companies The IRS looks past the LLC and treats the business as a sole proprietorship. The LLC files no separate income tax return. Instead, the owner reports business income and expenses on Schedule C, attached to their personal Form 1040.3Internal Revenue Service. About Schedule C Form 1040 Profit or Loss from Business Sole Proprietorship
Net profit from Schedule C is taxed at the owner’s individual rate. On top of that, the owner owes self-employment tax of 15.3% on net earnings, which covers Social Security (12.4%) and Medicare (2.9%).4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
One boundary catches new owners off guard: the “disregarded” label applies to income tax only. For employment tax and excise tax, the single-member LLC remains a separate entity. If you hire employees, the LLC must get its own Employer Identification Number and run payroll under its own name, not your Social Security number.2Internal Revenue Service. Single Member Limited Liability Companies
Multi-Member LLC: Taxed as a Partnership by Default
An LLC with two or more members that files no election is taxed as a partnership.5eCFR. 26 CFR 301.7701-3 – Classification of Certain Business Entities Like the disregarded-entity treatment, this is pass-through: the LLC pays no income tax itself. It files an informational return on Form 1065 reporting the business’s total income, deductions, and credits.6Internal Revenue Service. About Form 1065, U.S. Return of Partnership Income
Form 1065 produces a Schedule K-1 for each member showing that member’s allocated share of income and losses. Members then report the K-1 amounts on their personal returns and pay tax at their individual rates. Here’s the part that trips people up: you owe tax on your share of the profit whether or not the LLC actually distributes cash. If the LLC earns $200,000 and reinvests every dollar, each member still owes tax on their share.
Members who actively work in the business also owe self-employment tax at 15.3% on their share of business income.7Internal Revenue Service. Topic No. 554, Self-Employment Tax Some multi-member LLCs pay guaranteed payments to specific members. A guaranteed payment works like a salary: the member receives a set amount whether or not the business turned a profit. The LLC deducts guaranteed payments on Form 1065, and the receiving member reports them as ordinary income subject to self-employment tax.
Passive Members and the Loss Rules
Members who don’t materially participate in the LLC face passive activity loss limits. Losses from a business you don’t materially participate in can only offset income from other passive activities, not wages or investment income.8Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited Unused passive losses carry forward. Rental activities count as passive regardless of hours spent, with narrow exceptions for real estate professionals.
Electing C-Corporation Tax Treatment
An LLC can choose to be taxed as a C-Corporation by filing Form 8832 with the IRS.9Internal Revenue Service. About Form 8832, Entity Classification Election The election changes only the tax treatment. The LLC stays an LLC under state law and keeps its liability shield and management flexibility. For federal tax, though, it is now a corporation.
A C-Corp files Form 1120 and pays a flat 21% corporate income tax on its profits.10GovInfo. 26 USC 11 – Tax Imposed The trade-off is double taxation. The corporation pays tax on earnings, and members pay tax again on any dividends they receive at their individual capital gains rates. For most small businesses, that math is unfavorable.
The election makes sense in specific situations. Businesses planning to reinvest most profits rather than distribute them can benefit from the 21% rate, which may sit below the owners’ personal rates. Companies raising venture capital often prefer C-Corp status because it accommodates multiple stock classes and complex ownership arrangements S-Corps cannot. LLCs taxed as C-Corps may also qualify to issue Qualified Small Business Stock under Section 1202, which can let shareholders exclude up to $10 million in capital gains (or $15 million for stock issued after July 4, 2025) if the stock is held at least five years.
Electing S-Corporation Tax Treatment
The S-Corp election is where many LLC owners end up when they want to trim self-employment tax. An S-Corp keeps pass-through treatment, so profits flow to members’ personal returns and avoid the C-Corp’s double tax. The LLC files Form 1120-S and issues K-1s to its owners.11Internal Revenue Service. S Corporations
The difference lies in how owner compensation gets split. An owner working in an S-Corp must take a reasonable salary, and that salary is subject to FICA payroll taxes covering the employer and employee shares of Social Security and Medicare. Remaining profit can be paid as a distribution that isn’t subject to those payroll taxes. If the LLC earns $150,000 and the owner takes a $70,000 salary, payroll taxes apply to the $70,000 but not the $80,000 distribution. Under the default classifications, self-employment tax would hit the full $150,000.
The IRS watches that split closely. If you set an unreasonably low salary to maximize tax-free distributions, the IRS can reclassify distributions as wages and assess back taxes plus penalties.12Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers Courts have consistently sided with the IRS on this. Your salary should reflect what you’d reasonably pay someone else to do the same work.
Who Qualifies for S-Corp Status
Not every LLC can elect S-Corp treatment. Federal law limits the election to domestic entities that meet all of these conditions:13Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
- No more than 100 shareholders, with family members counted as a single shareholder.
- Only individuals as shareholders. Partnerships, corporations, and most trusts cannot own shares. Certain estates and qualifying trusts are exceptions.
- No nonresident alien shareholders. Every owner must be a U.S. citizen or resident alien.
- Only one class of stock, though voting-rights differences within common stock are allowed.
Financial institutions using reserve accounting for bad debts, insurance companies, and certain international sales corporations are specifically disqualified.
The QBI Deduction and Why Classification Matters
LLCs taxed as sole proprietorships, partnerships, or S-Corporations can claim the Qualified Business Income deduction, which allows eligible owners to deduct up to 20% of qualified business income from taxable income.14Internal Revenue Service. Qualified Business Income Deduction The One Big Beautiful Bill Act made this deduction permanent. LLCs taxed as C-Corporations get no QBI deduction because it applies only to pass-through income.
The full deduction is available below certain income thresholds. For 2026, the phase-out begins around $201,750 for single filers and $403,500 for joint filers. Above those levels, the deduction may be limited by the business’s W-2 wages or the value of its qualified property.
Service professions face an extra restriction. If your LLC operates in healthcare, law, accounting, consulting, financial services, or performing arts, the IRS classifies it as a Specified Service Trade or Business. Owners lose the QBI deduction entirely once taxable income exceeds the upper end of the phase-out range, roughly $276,750 for single filers and $553,500 for joint filers in 2026. This is one reason some high-income service professionals choose C-Corp status.
Choosing and Changing Your Classification
If the default treatment fits, you don’t need to file anything with the IRS about classification. If you want a different treatment, the form and deadline depend on which one.
Form 8832 for C-Corporation or Partnership Status
An LLC wanting to be taxed as a C-Corporation, or a multi-member LLC wanting to override its partnership default, files Form 8832.15Internal Revenue Service. IRS Form 8832 – Entity Classification Election The effective date can’t be more than 75 days before the filing date or more than 12 months after it. Pick a date outside that window and the IRS adjusts it to the nearest valid one.
Once an LLC uses Form 8832 to change its classification, it generally can’t change again for 60 months from the effective date.16Internal Revenue Service. Limited Liability Company – Possible Repercussions An initial classification chosen at formation doesn’t count as a change, so a new LLC electing C-Corp status on day one isn’t locked in for five years.
Form 2553 for S-Corporation Status
The S-Corp election uses Form 2553, and every shareholder must sign it.17Internal Revenue Service. About Form 2553, Election by a Small Business Corporation The deadline is no later than two months and 15 days after the beginning of the tax year you want the election to take effect. For a calendar-year LLC, that’s March 15. You can also file during the tax year before the one you want the election to apply to.18Internal Revenue Service. Instructions for Form 2553
A newly formed LLC wanting S-Corp treatment from day one must file within two months and 15 days of its formation date. An eligible LLC filing Form 2553 doesn’t also need to file Form 8832 separately; the S-Corp election automatically treats the LLC as a corporation.
Late Election Relief
Missed the Form 2553 deadline? The IRS offers a simplified relief process under Revenue Procedure 2013-30 for LLCs that intended to elect S-Corp status but filed late. If the LLC and all its members have been filing consistently as though the S-Corp election was in place, and at least six months have passed since the first S-Corp return was filed, the LLC can request relief with no time limit. The completed Form 2553 must include a reasonable-cause statement and be marked “Filed pursuant to Rev. Proc. 2013-30” at the top. If the LLC can’t meet these conditions, it can request a private letter ruling, which involves a user fee.
Whichever classification applies, it drives your filing calendar. A partnership return on Form 1065 and an S-Corp return on Form 1120-S are both due March 15 for calendar-year filers. A C-Corp return on Form 1120 is due April 15. Partnership and S-Corp late-filing penalties are assessed per member per month, so they add up quickly.