For most small businesses, an LLC is the best fit: it shields your personal assets from business debts, lets profits flow through to your personal tax return without a separate corporate tax, and demands far less upkeep than a corporation. It is not automatic, though. A freelancer earning modest income may not need the cost. A startup chasing venture capital will likely outgrow the format. And a profitable solo operator may want to layer an S-corporation tax election on top rather than stop at a plain LLC. The question is less “LLC or not” than “LLC compared to what, at my size.”
Why the LLC Fits Most Small Businesses
The single biggest reason to form an LLC is liability protection. Once the business is its own legal entity, a wall goes up between company obligations and your personal finances. If the LLC gets sued or can’t pay a vendor, creditors go after the business bank account, not your house or retirement savings. Courts call this wall the corporate veil and start from a strong presumption against setting it aside.1Cornell Law School. Piercing the Corporate Veil
The protection runs the other way too. If you personally owe money from a divorce settlement, a car accident judgment, or credit card debt, a personal creditor generally cannot reach inside the LLC and seize business equipment or cash. In most states the creditor’s only remedy is a charging order, which redirects distributions that would have gone to you. The creditor cannot force the LLC to make a distribution, cannot vote on business decisions, and cannot liquidate company assets. For multi-member LLCs, that makes the entity a surprisingly strong shield against personal financial trouble.
On top of that, the LLC is cheap to run compared to a corporation. No board of directors, no required bylaws, no annual shareholder meetings in most states. You get the liability wall of a corporation without most of the formalities, and you keep the ability to change how you are taxed as the business grows.
Where the Protection Breaks
Liability protection evaporates fast if you treat the LLC like a personal account. Commingling funds is the classic mistake: paying your mortgage, car payment, or grocery bill from the business checking account. When a court sees that pattern, it may declare the LLC your alter ego and hold you personally responsible for everything the business owes. The legal term is piercing the veil, and courts look for serious misconduct like commingling, inadequate funding of the business, or using the entity to hide assets.1Cornell Law School. Piercing the Corporate Veil
Some liabilities stay personal no matter how clean your books are. If you sign a personal guarantee on a loan, you owe that money regardless of the LLC’s status. If you personally injure someone through negligence while doing business, you can be sued individually. The LLC protects you from the company’s debts, not from your own wrongdoing.
How an LLC Is Taxed
The IRS does not treat an LLC as its own tax category. The default depends on how many owners it has. A single-member LLC is a disregarded entity, meaning the IRS ignores it for income tax purposes and the owner reports business income on Schedule C of their personal Form 1040.2Internal Revenue Service. Single Member Limited Liability Companies A multi-member LLC is taxed as a partnership by default, filing Form 1065 as an informational return while each member reports their share of profits on Schedule E.3Internal Revenue Service. About Form 1065, U.S. Return of Partnership Income
Either way, the LLC itself pays no federal income tax. Profits and losses flow to the owners’ personal returns. That avoids the double taxation of a C-corporation, where the company pays corporate tax on profits and shareholders pay again when those profits are distributed as dividends.
Self-Employment Tax
The trade-off for pass-through simplicity is self-employment tax. LLC owners owe both the employer and employee portions of Social Security and Medicare on their net business income. The combined rate is 15.3%, split into 12.4% for Social Security and 2.9% for Medicare.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) The Social Security portion applies only to the first $184,500 of combined wages and self-employment income in 2026; the Medicare portion has no cap.5Social Security Administration. Contribution and Benefit Base
For an LLC netting $150,000, that 15.3% comes out to roughly $21,200 in self-employment tax, on top of regular income tax. This is where the LLC’s flexibility starts paying off, because the IRS lets you change how the LLC is taxed without dissolving the business.
The 20% Qualified Business Income Deduction
LLC owners who keep the default pass-through treatment can deduct up to 20% of their qualified business income before calculating income tax. The deduction, created under Section 199A, was made permanent in 2025 after originally being set to expire at the end of that year.6Internal Revenue Service. Qualified Business Income Deduction It is capped at the lesser of 20% of qualified business income or 20% of taxable income minus net capital gains. Higher earners in certain service industries like law, consulting, or medicine hit phase-outs, so the benefit depends on both your income and what the business does.
When to Elect S-Corporation Treatment
Once profits grow large enough that self-employment tax hurts, electing S-corporation status is the standard move. The LLC files Form 2553, and the election must be made by the 15th day of the third month of the tax year to take effect that year.7Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination
The savings work like this. Instead of paying self-employment tax on the entire net profit, an S-corp owner pays themselves a salary subject to payroll taxes and takes the rest as a distribution. The distribution is not hit with the 15.3% self-employment tax. If the LLC nets $200,000 and the owner takes a $90,000 salary, only that $90,000 gets payroll taxes. The other $110,000 passes through taxed only as ordinary income. The difference can save $15,000 or more a year.
The IRS watches this closely. The salary must be reasonable for the work performed, and courts have reclassified distributions as wages when the salary was artificially low.8Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers A too-low salary invites back taxes, penalties, and interest. Most tax professionals suggest making the election once net profits consistently exceed $50,000 to $60,000 after a reasonable owner’s salary, because below that threshold the added payroll and accounting costs can eat the savings.
What an LLC Costs to Run
State filing fees for the Articles of Organization range from about $35 to $500, with an average near $130. Most states then require an annual or biennial report confirming the business address, registered agent, and member or manager names. Those filing fees range from nothing in a few states to over $800 in states that bundle a franchise tax with the report. The typical cost lands around $90 per year. If you hire a registered agent service instead of acting as your own, add roughly $35 to $300 per year.
Missing a filing deadline has real consequences. States impose late fees, revoke good-standing status, and can administratively dissolve the LLC. A dissolved LLC loses its authority to do business, may be unable to enforce contracts in court, and the owners lose the liability protection they formed the LLC to get. Reinstatement is usually possible but comes with back fees and extra paperwork.
Operating in a second state adds costs. If you have a physical office, employees, or regularly accept orders there, that state will likely require foreign qualification: a second filing fee, a registered agent in that state, and a separate annual report. For LLCs operating across state lines, those duplicated costs stack up quickly.
When an LLC Is Not the Best Choice
A few situations point toward a different structure.
If you are a solo freelancer or consultant earning under $30,000 to $40,000 a year, the formation fees, annual reports, and separate bookkeeping may cost more in time and money than the liability protection saves you. A sole proprietorship with solid insurance can be a pragmatic starting point, with the option to form an LLC once revenue grows.
If you plan to raise money from venture capital firms, you will almost certainly need a C-corporation. Institutional investors want preferred stock, board seats, and equity structures that an LLC’s operating agreement cannot easily replicate. Converting from an LLC to a corporation later is possible but comes with tax consequences and legal costs you could have avoided by starting as a corporation.
And if you are a single owner with consistent profits above about $60,000, think about an S-corp election early. The LLC structure is still fine; leaving it on the default pass-through treatment when the math favors S-corp treatment just means paying thousands more in self-employment tax every year. The LLC’s ability to change its tax election without restructuring the business is one of its strongest features, but it only helps if you actually use it.
For everyone in between, which is most small businesses, the LLC does the job it was built for: real liability protection, simple pass-through taxation, and room to adjust as the business grows.