Federal tax treatment compared for U.S. limited liability companies.
2026
An LLC is a legal business structure — not a federal tax classification. Depending on the number of owners and the elections made with the IRS, the same LLC may be taxed as a sole proprietorship, a partnership, an S corporation or a C corporation.
Four ways the same LLC can be taxed
Sole proprietorship
Single-member LLC, by default
FilesSchedule C with Form 1040
How it worksThe LLC is generally treated as a disregarded entity. Business income and expenses are usually reported on the owner's Form 1040, typically using Schedule C.
Five key advantages
Simple federal tax reporting.
No separate federal income tax return for the LLC.
Generally lower tax preparation and administrative costs.
Business losses may offset other income, subject to applicable limitations.
The LLC may elect corporate taxation later if the business grows.
Five key disadvantages
Net business income is generally subject to self-employment tax.
The owner cannot be treated as a W-2 employee of the disregarded LLC.
Fewer options for separating compensation from business profit.
Estimated tax payments may be required throughout the year.
Tax costs may increase as the business becomes more profitable.
Partnership
Multi-member LLC, by default
FilesForm 1065, and a Schedule K-1 to each member
How it worksThe LLC generally files Form 1065 and provides Schedule K-1 to each member. The partnership normally does not pay federal income tax; profits and losses pass through to the members.
Five key advantages
Pass-through federal income taxation.
Flexible allocation of certain profits, losses and tax items when properly structured.
Members may have different ownership and economic arrangements.
Guaranteed payments may compensate members for services or capital.
Often suitable for businesses with multiple active owners.
Five key disadvantages
More complex tax reporting and bookkeeping.
Active members may owe self-employment tax on applicable income.
Members are generally not W-2 employees of the partnership.
Members may owe tax on allocated income even when cash was not distributed.
Basis, capital accounts, distributions and ownership changes require careful tracking.
S corporation
By election, on Form 2553
FilesForm 1120-S, a Schedule K-1 and a W-2
How it worksThe LLC files Form 1120-S and issues Schedule K-1 to its shareholders. A shareholder who performs services must generally receive reasonable compensation through payroll before receiving non-wage distributions.
Five key advantages
Pass-through federal income taxation.
May reduce employment taxes when profit exceeds reasonable compensation.
Owners may receive both W-2 wages and shareholder distributions.
Avoids the standard double taxation associated with C corporations.
Often effective for profitable owner-operated businesses.
Five key disadvantages
Payroll and employment tax filings are required.
The owner must receive reasonable compensation for services performed.
Higher accounting, payroll and tax preparation costs.
Eligibility restrictions apply to shareholders, ownership and classes of stock.
Profit and loss allocations generally must follow ownership percentages.
C corporation
By election, on Form 8832
FilesForm 1120, at the corporate rate
How it worksThe LLC files Form 1120 and pays federal income tax at the corporate level. Owners may receive compensation through payroll, dividends or other properly documented payments.
Five key advantages
The company is a separate federal taxpayer.
The federal corporate income tax rate is generally 21 percent.
No S corporation restrictions on the number or type of shareholders.
Different classes of ownership interests may be available.
May suit businesses seeking outside investment or retaining substantial profits for growth.
Five key disadvantages
Profits may be taxed twice — at the corporate level and again when distributed as dividends.
Corporate losses generally do not pass through to owners' personal returns.
More complex accounting and corporate tax compliance.
Payments to owners must be properly classified and documented.
Converting out of C corporation taxation may create significant tax consequences.
Which tax treatment may be appropriate?
A starting point, not an answer. Most businesses fit more than one line, and the lines move as the business changes.
Business situationCommon starting point
Business situationOne owner; new or smaller business; the priority is straightforward reporting
Common starting pointSingle-member LLC, taxed as a sole proprietorship
Business situationTwo or more owners; flexibility in ownership and economic arrangements matters
Common starting pointPartnership taxation
Business situationProfitable owner-operated business, with profit above reasonable compensation
Common starting pointS corporation taxation may be worth evaluating
Business situationOutside investors, different ownership classes, or substantial retained earnings
Common starting pointC corporation taxation may be worth evaluating
The S election is not automatic savings
Potential employment-tax savings have to be compared with what the regime costs to carry: reasonable-compensation requirements, payroll and bookkeeping, tax preparation fees, state taxes and fees, expected income and distributions, and the owners' long-term plans. Below is the shape of that comparison. Where the two lines cross is a number that belongs to one business and not to another.
Where the S corporation starts to payOne year, at four levels of business profit
Illustrative, with reasonable compensation set at 60 percent of profit and the regime costed at payroll, an 1120-S and the extra bookkeeping. Your salary, your state and the qualified business income deduction all move the crossing point.
Which one is yours?
TaxFM can review your business structure and compare the tax and compliance consequences of each option available to you — on your numbers, before an election is filed rather than after.