How a Single-Member LLC Is Taxed: Schedule C, Self-Employment Tax, and Payroll

A single-member LLC feels like a company but is taxed, by default, like a person. This quiet mismatch between legal identity and tax identity explains many surprises owners have in their first year: no separate income tax return, no entity-level tax bill, yet a business bank account and legal protection. Here is how the pieces fit.

Disregarded entity status

Under the federal "check the box" rules, a domestic LLC with one owner is automatically classified as a disregarded entity unless it elects otherwise. "Disregarded" means the IRS ignores the LLC for income tax purposes and treats its activity as the owner's own. If the owner is an individual, business income and expenses generally go on Schedule C of Form 1040 for a service or sales business. Rental activity usually goes on Schedule E. Farming goes on Schedule F.

No Form 1120 or 1065 is needed. There is no election to make to get this treatment, and the LLC does not need a separate income tax return. If the owner is itself a corporation or another entity, the LLC's activity is reported on that owner's return instead.

Self-employment tax

Net profit reported on Schedule C is generally subject to self-employment (SE) tax. The tax has two parts: Social Security at 12.4 percent, up to an annually adjusted wage base, and Medicare at 2.9 percent on all net earnings, with an additional Medicare tax that can apply at higher income levels. The calculation applies to 92.35 percent of net earnings from self-employment, and half of the SE tax is deductible in figuring adjusted gross income. Our article on self-employment tax walks through the mechanics.

There is no "salary" for a disregarded-entity owner. You cannot put yourself on payroll as an employee of your own disregarded LLC. Money you move from the business account to your personal account is an owner draw, not wages, and it does not change your tax. Taxes are computed on profit, not on what you withdrew. See owner draws vs distributions.

Quarterly estimated payments

Because no employer withholds tax for you, you generally make quarterly estimated payments covering both income tax and SE tax, using Form 1040-ES. Missing them can lead to underpayment penalties. Details and safe harbors are in the estimated taxes guide.

Where the LLC is not ignored

Even if disregarded for income tax, a single-member LLC is generally treated as a separate entity for:

• Employment taxes. If the LLC has employees, it uses its own EIN, files payroll returns, and is the employer. The owner is not an employee.
• Certain excise taxes. Federal excise tax reporting treats the LLC as a separate entity.
• State and local matters. Sales tax registration, business licenses, franchise taxes, and annual fees are often at the LLC level. Some states charge LLC-level taxes even when the federal return is disregarded.
• Legal and contract matters. The LLC signs contracts, holds title, and owns bank accounts in its name.

Because of this, many single-member LLCs obtain an EIN even when they have no employees, both for banking and to avoid giving out a Social Security number. See getting an EIN.

Electing S-corp or C-corp taxation

A single-member LLC can file Form 2553 to be taxed as an S-corp (and is deemed to have elected corporate classification for that purpose), or Form 8832 to be taxed as a C-corp. Once taxed as an S-corp, the owner becomes an employee who must receive reasonable compensation and the entity files Form 1120-S. Whether it is worth it depends on profit, salary level, and state rules. See when to elect S-corp status.

Adding a member changes everything

If a second owner joins, the LLC generally becomes a partnership for tax purposes by default and must file Form 1065, with K-1s to each member. The transition has tax consequences that depend on how the new member comes in (buying part of the old member's interest versus contributing money to the LLC). Read adding or removing an owner before you sign anything. If your spouse co-owns the LLC, some community property states allow partnership or disregarded treatment under specific IRS guidance, so check your state.

Basis, capital, and records

A disregarded LLC does not need a formal capital account, but you still need to know what you put in and took out. Contributions and draws are not deductible or taxable events by themselves, but they matter in the situations below:

• Deciding whether to elect S status later, when basis tracking becomes formal. See S-corp shareholder basis.
• Selling the business, when your basis in assets and any goodwill matter.
• Showing a bank or buyer a clean picture of equity.

Keep a simple record of contributions and draws in your bookkeeping system every month.

Common mistakes

1. Paying yourself "salary" through the business account and reporting it as wages. As a disregarded owner, that is not wages. Reports and filings can end up wrong.
2. Mixing personal and business spending. This creates messy books and weakens the liability protection. See separating personal and business finances.
3. Ignoring state obligations. A disregarded LLC can still owe state annual fees or franchise taxes.
4. Skipping estimated payments. Owners are surprised by a tax bill plus penalty at filing time.
5. Assuming the LLC saves tax. The default structure changes liability, not the federal income tax computation.
6. Not opening a separate account. Even a disregarded entity should have its own bank account for the shield to be credible.

Deductions to review

Common deductions on Schedule C include ordinary and necessary business expenses, the self-employed health insurance deduction, retirement contributions, and, if you qualify, the home office deduction and the QBI deduction. See home office deduction, self-employed health insurance, and QBI deduction.

Should you change anything?

If your income is growing and self-employment tax is taking a large bite, it may be time to model an S-corp election. If your income is modest, you may be better served by cleaning up books, making estimated payments on time, and opening a retirement plan. The AE Tax Advisors team helps owners weigh those paths, and a discovery call is a simple way to get oriented.