Federal taxes are identical for a single-member LLC and a sole proprietorship. What differs is liability, state fees, banking, credibility and your options later. Here is how to decide.
The most common question from someone starting a business alone: "Should I form an LLC or just operate as a sole proprietor?" Most of the answers online start with taxes. That is the wrong place to start, because for federal income tax the two are the same thing. The real differences are legal, administrative and about what you can do later. This post lays them out side by side. For the tax mechanics in depth, see our single-member LLC tax guide.
A single-member LLC that makes no election is a disregarded entity. Like a sole proprietorship, its profit is reported on Schedule C, taxed at your ordinary rates after the 20% qualified business income deduction, and subject to self-employment tax at 15.3%. Both pay through quarterly estimates. Both can deduct the same expenses, use the same retirement plans and the same home office rules. Forming an LLC changes nothing on your federal return.
State tax is where the tie can break. Some states charge LLCs a fee the sole proprietor never pays. California is the well-known case: an $800 minimum franchise tax every year, profitable or not. Others charge modest annual report fees. Check your state before assuming the LLC is free.
A sole proprietor and the business are one legal person. A client's lawsuit, an unpaid business debt or a slip-and-fall at your premises reaches your personal savings, car and home. An LLC puts a legal wall between business obligations and personal assets. If the business is sued, the claim is against the LLC and, in most cases, stops at the LLC's assets.
The wall only holds if you maintain it:
Courts can ignore a shield that the owner ignored. Our post on commingling business and personal money explains how that happens in practice.
Banks open business accounts for either, but an LLC's account is clearly separate property, which matters for the liability point above. Many larger clients, platforms and landlords prefer or require contracting with an entity. Some will not pay a 1099 contractor without one. If your customers are businesses rather than consumers, the LLC often pays for itself in won contracts before tax ever enters the picture.
This is the difference that grows with the business. A sole proprietorship has nowhere to go except to form something. A single-member LLC can:
Not every side income needs an entity. A sole proprietorship makes sense when the work carries little liability (freelance writing, tutoring, consulting from a laptop with good contracts), the income is modest or uncertain, and your state's LLC fees would eat a real share of profit. You can form the LLC later, and the tax picture will not change when you do.
Choose between a single-member LLC and a sole proprietorship on liability, contracts and where the business is going, not on federal tax, because federal tax is the same. If the LLC is the answer, our business formation service sets it up with the operating agreement, EIN and the tax elections lined up for later. If you are not sure, send us the numbers and we will tell you which one fits.
Talk it through with a licensed US tax professional — we'll tell you honestly whether it applies to your situation.
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A single-member LLC is a disregarded entity: all profit flows to Schedule C and gets hit with 15.3% self-employment tax. Here's how it works and when an S election starts paying.
