LLC Tax Choices and Liability Shields

What to take away

How the IRS classifies an LLC

An LLC exists because a state approved articles of organization. The IRS has no separate category for it. A single-member LLC is a disregarded entity, so the owner reports business income on their own return. A multi-member LLC is a partnership by default.

The Internal Revenue Code has no LLC category. Those defaults come from Treasury's check-the-box entity classification regulations, and the IRS states them, along with the forms that change them, on its Limited liability company (LLC) page. The letters in the name do not decide the tax.

Pass-through treatment means the entity pays no federal income tax. Profit and loss reach the owners, who report them at their own rates. A partnership files Form 1065 and sends each member a Schedule K-1.

That single layer is the difference from a C corporation. The corporation pays federal income tax on profit, and shareholders pay again on dividends. Owners owe tax on their share whether or not the LLC distributes cash, so a company that reinvests profit can still generate a bill.

An LLC may elect C or S corporation treatment by filing with the IRS. That election is separate from the state filing, a distinction the entity type selection guide works through.

The four federal classifications

The first two are automatic. Only the last two require a filing, and the timing rules decide the tax year they take effect, as the LLC S Corp election deadline article sets out.

States do not always follow the federal pattern. Some levy an entity-level tax on LLCs or partnerships, and a few charge a minimum fee whatever the profit. The federal answer is half the bill.

Self-employment tax for LLC members

Self-employment tax funds Social Security and Medicare. The rates come from the Internal Revenue Code, and the IRS publishes them, along with the annual Social Security wage base, on its Self-employment tax (Social Security and Medicare taxes) page.

A sole proprietor pays it on net earnings, and an LLC member in a partnership-structured LLC is generally in the same position. The member's distributive share of trade or business income is self-employment income even when the LLC writes no check.

That is the part owners miss. Profit left in the LLC account is not deferred. The member owes income tax and self-employment tax on the K-1 share.

A corporate employee faces a different split. The employer withholds Social Security and Medicare from wages and pays a matching share, and the corporation deducts its half.

So at modest profit the LLC can cost more in payroll tax. Take an owner with $80,000 of net profit in an LLC against an employee on an $80,000 salary. The owner pays self-employment tax on the full $80,000. The employee pays only the employee half, and the employer pays the rest.

There are exceptions. A member who does not work in the business, a pure investor in a manager-managed LLC, may have the distributive share treated as passive income. Rental income generally is not self-employment income either.

Payments to a partner for services are self-employment income, and so is a managing member's share in most operating LLCs. The question is whether the member provides services and whether the income comes from a trade or business.

How two owners are taxed

Take an LLC taxed as a partnership, two equal members, $200,000 of net profit. Each reports $100,000 and owes income tax plus self-employment tax on it, with the Social Security portion capped at the annual wage base and Medicare uncapped.

Now take a C corporation with the same $200,000, paid as $100,000 salaries to two owner-employees with the remainder as a dividend. Payroll tax applies to the salaries, split between company and employee, and the dividend is taxed again after the corporate tax.

At low profit the LLC usually wins. At high profit with most earnings retained, the corporation can win. The crossover depends on state tax, the owners' brackets and how much cash the business must keep.

The liability shield under state law

Both forms limit owner liability. A member or shareholder generally is not personally responsible for the entity's debts, judgments or contracts. That shield comes from state law, not federal: it is the LLC act or business corporation statute of the state of formation, such as the Delaware Limited Liability Company Act or the Texas Business Organizations Code.

Cornell Law School's legal definition of a corporation describes an entity separate from its owners, with centralized management and limited liability for shareholders. An LLC reaches a similar result under a different statute with far looser governance.

Governance is where they part. A corporation needs a board, officers, bylaws and records of meetings. An LLC can be member-managed with no board, and its operating agreement can allocate profit, voting and exit rights almost any way the members choose.

For a one-owner business the practical gap is small. The shield works the same way, and the corporation adds annual formalities plus, in some states, a franchise tax based on shares or assets.

For a venture-backed startup the gap is large. Investors buy preferred stock, not membership interests, and priced rounds assume a Delaware C corporation. Converting later is possible, at legal cost and sometimes a tax cost.

Formalities keep the shield alive. A corporation with no minutes and an LLC with no records and mixed funds both start to look like the owner's alter ego. Insurance still matters, because a shield does not cover malpractice and does not stop a plaintiff from naming the owner personally.

What an S-corporation election changes

An LLC elects S-corporation treatment under Subchapter S of the Internal Revenue Code by filing Form 2553. The Instructions for Form 2553 (12/2020) cover eligibility, shareholder consent and the deadline.

The limits are strict. The entity must be domestic, have no more than 100 shareholders, and hold shares only through individuals, certain trusts and estates. Partnerships and corporations cannot be shareholders, and nonresident aliens cannot hold shares.

The payoff is payroll tax. The owner-employee takes a reasonable salary, which carries payroll tax, and the remaining profit comes out as distributions, which do not.

Reasonable compensation is the risk. The IRS expects a salary comparable to what the market pays for the work, and a token salary against large distributions invites an audit, back taxes, penalties and interest.

The election also adds payroll filings, quarterly returns and a Form 1120-S. Those costs run into the hundreds or thousands of dollars a year, so the structure only pays above a certain profit level.

State treatment varies. Some states accept the federal election automatically, some require a separate state election, and a few tax S corporations at the entity level. Losing eligibility, for instance by transferring shares to a corporation, ends the election, and waiting periods apply before re-electing. The entity type selection mistakes article covers the errors that force a reversal.

Delaware and Texas examples of entity choice

Delaware and Texas pull in opposite directions, which makes them useful examples.

Delaware is the default home for corporations. The Delaware Division of Corporations handles filings, the Court of Chancery hears business disputes, and the corporate statute is the most developed in the country. Investors and lawyers know it.

A Delaware C corporation pays an annual franchise tax under an authorized shares method or an assumed par value capital method, and files an annual report. The state has no personal income tax on wages, which does not help an owner who lives and works elsewhere.

Texas works differently. The Texas Comptroller of Public Accounts administers a franchise tax, often called the margin tax, and most small entities fall under the no-tax-due threshold and file a report only. Texas has no personal income tax.

A single-member Texas LLC is cheap to run. A Texas corporation faces the same franchise tax and annual report plus the corporate formalities, so for a local service business the LLC usually fits better.

Delaware LLCs are common, but the advantages are narrower. A Delaware LLC doing business in Texas still registers as a foreign entity in Texas and pays Texas fees.

Other states repeat the pattern. Wyoming has no personal or corporate income tax and low annual fees. California charges an $800 minimum franchise tax on LLCs and corporations and adds a gross receipts fee on LLCs.

New York requires newspaper publication for some formations. Nevada has no state income tax. Florida requires an annual report.

Confirm current amounts with the relevant secretary of state or tax agency, because they change.

Two owners, $300,000 profit: three structures

Two owners run a consulting business, expect $300,000 of net profit and want to keep $50,000 in the company.

Run the arithmetic with your own state's rates before deciding. The federal comparison is part of the bill.

Piercing the corporate veil

Limited liability is not absolute. Courts can hold owners personally liable for entity obligations, a remedy called piercing the corporate veil. Cornell Law School's entry on piercing the corporate veil describes the doctrine and the factors courts weigh.

The classic grounds are thin capitalization, ignored formalities, commingled funds, and using the entity to commit fraud or evade a duty. Courts also ask whether the entity is a mere instrumentality or alter ego of its owner.

LLC members face the same exposure. The doctrine reaches LLCs in every state, though the tests differ. Some states require fraud or injustice before piercing; others apply a looser instrumentality test.

A member who signs a personal repayment pledge on a lease or loan gives up the shield for that obligation by contract. That is not veil piercing, but the result is the same, and many owners sign without realizing what they gave up.

Undercapitalization is the most common trap. Starting with no insurance and no reserves and leaving creditors unpaid is the fact pattern courts punish. Capital the business reasonably needs is part of keeping the shield.

Keeping the shield intact is mostly administrative:

None of this is exotic. It is the ordinary paperwork that keeps the entity separate, and it applies to an LLC and a corporation alike. The LLC formation and corporation formation guides walk through the filings that create and maintain each one.

Common questions

Does an LLC pay less tax than a corporation?

Not automatically. A single-member LLC avoids the corporate-level tax, which usually means less total tax at low profit. A C corporation can be cheaper when profit is large and mostly kept in the business.

Do LLC members always pay self-employment tax on all profit?

Active members generally do, including profit left in the business. Passive investors in a manager-managed LLC and rental income are common exceptions, so the answer turns on the member's role.

Is an S-corporation election worth it for a small LLC?

It usually pays once profit comfortably exceeds a reasonable salary, because distributions escape payroll tax. Below that level, payroll and filing costs can wipe out the savings.

Can a creditor pierce an LLC's liability shield?

Yes. Courts pierce LLCs for commingling, undercapitalization, fraud and ignored formalities, using tests that vary by state. Separate funds and current records are the defense.