Sole proprietorship vs. LLC sounds like a tax question. It mostly isn’t. The moment you start selling something under your own name, you’re already a sole proprietor. No filing, no fee, nothing to sign. An LLC is the opposite: a legal entity you create on purpose, through a state filing, usually with a fee to keep it alive every year after that.

Here’s the part that trips people up: for federal tax purposes, a single-member LLC and a sole proprietorship are treated exactly the same by default. Both report profit and loss on Schedule C. Both pay the same 15.3% self-employment tax on net earnings. The IRS calls a single-member LLC a "disregarded entity" for income tax purposes precisely because it doesn’t change anything on your 1040. So if you’re choosing between the two purely to save on taxes, you’re solving the wrong problem. The real difference is what happens if something goes wrong.

The difference that actually matters: liability

As a sole proprietor, there’s no legal line between you and the business. If a client sues over botched work, or a supplier goes unpaid and takes you to court, there is no "the business" for them to go after, legally speaking. They’re coming after you: your savings account, your car, potentially your house.

An LLC draws that line. Debts and lawsuits against the business are, in principle, limited to what the LLC owns. Your personal bank account isn’t part of the pool.

Two things weaken that protection, and both catch people off guard.

Courts can disregard it if you treat the LLC as an extension of your personal finances rather than a separate thing. Lawyers call this "piercing the corporate veil." Paying personal bills straight from the business account, skipping basic recordkeeping, using LLC funds for personal purchases: these are exactly the patterns courts look for when deciding whether the LLC was ever really separate from its owner. Keeping a dedicated business bank account and not mixing the two is the least glamorous, most important thing an LLC owner does.

The shield also doesn’t cover debts you personally guaranteed. Landlords and lenders often ask an LLC owner to sign a personal guarantee on a lease or loan precisely because they know the LLC alone doesn’t give them recourse to the owner. Sign one of those, and you’re back to sole-proprietor-level exposure on that specific debt, LLC or not.

Why "does an LLC lower my taxes" is the wrong question

It’s worth restating, because it’s the single most common misconception in this decision: forming an LLC does not, by itself, change what you owe the IRS. Same Schedule C, same self-employment tax, same rules.

The tax lever that actually exists is a separate decision: electing to have your LLC taxed as an S-corporation instead of accepting the default treatment. This is where forming an LLC becomes relevant even for someone who isn’t worried about liability, because only a legal entity can make that election. A sole proprietorship has no separate entity to file the paperwork on, so if S-corp tax treatment is the goal, forming an LLC (or a corporation) is a required first step, not an optional one. If you are also weighing a full corporation, our LLC vs corporation guide explains what changes in taxes, paperwork, and investor fit.

Here’s roughly how the savings work. Without the election, an LLC generating $100,000 in profit pays self-employment tax on the entire amount: about $15,300 total. With an S-corp election, you split that profit into a salary (subject to payroll tax) and a distribution (which isn’t). Pay yourself a reasonable $60,000 salary, and only that portion is taxed at the 15.3% rate; the remaining $40,000 distribution is taxed as regular income only. That can save somewhere in the neighborhood of $6,000 a year at this income level.

Two catches keep this from being a free lunch. The IRS requires the salary to be "reasonable" for the work you’re doing, not an artificially low number chosen to dodge payroll tax. And running an S-corp means actual payroll, which means processing costs and more bookkeeping. Most tax preparers put the break-even point somewhere around $50,000 to $60,000 in net profit; below that, the added complexity usually isn’t worth what you’d save.

What it costs to set up and keep alive

A sole proprietorship costs close to nothing to start. Depending on your city or county, you might need a "doing business as" filing if you’re operating under a name other than your own, and possibly a local business license, typically a modest one-time or annual fee, not a barrier.

An LLC costs more, in two places. There’s the state filing fee to create it, which varies a lot from state to state. And there’s usually an ongoing cost to keep it in good standing: many states require an annual or biennial report, sometimes bundled with a franchise tax. This part varies more than people expect. California charges an $800 minimum franchise tax every year regardless of whether the LLC made a dollar. Delaware charges a flat $300 franchise tax with no annual report at all for LLCs. Texas doesn’t have a traditional annual report, but LLCs still have to file a Public Information Report alongside the state’s franchise tax return, even when nothing is owed. None of these numbers are dramatic on their own, but they’re recurring, and it’s worth checking your specific state before assuming the LLC is a one-time cost.

So which one should you actually pick?

A few concrete situations, rather than a formula:

  • Real liability exposure points toward forming the LLC: client work where a mistake could cause financial or physical harm, a physical product, employees or contractors on the payroll, signed leases or loans. The filing fee is small next to what a single lawsuit could cost personally.
  • Low-risk situations where you’re still testing whether the business goes anywhere, like freelance writing, tutoring, or small-scale digital products with no realistic path to a lawsuit touching your personal assets, make staying a sole proprietor a reasonable, common choice.
  • Either way, it’s rarely a permanent decision. Sole proprietors convert to LLCs constantly once the business, or the risk, grows.

One nuance worth remembering before treating this as fully reversible: converting later doesn’t reach backward. Debts and liabilities from your time as a sole proprietor stay personal even after you form an LLC. The shield only covers what happens after the LLC exists, not before.

There’s also a smaller, less legal factor: some clients, banks, and marketplaces simply find it easier to work with a registered business than an individual. It’s not a liability issue, just a practical one that occasionally tips the decision.

If you’ve already settled on forming an LLC and you’re trying to figure out what the actual process looks like, fees, paperwork, timeline, our Texas LLC guide walks through one of the more straightforward states to file in, step by step.

Frequently asked questions

Can I convert a sole proprietorship to an LLC later?

Yes, and it’s common. You file formation paperwork with your state, typically get a new EIN tied to the LLC, and move contracts, accounts, and licenses into the LLC’s name. The liability protection starts from the LLC’s formation date going forward. It doesn’t apply retroactively to anything that happened while you were a sole proprietor.

Does forming an LLC lower my taxes?

Not by itself. A single-member LLC’s default tax treatment is identical to a sole proprietorship’s: Schedule C, same self-employment tax. Any savings come from a separate election to be taxed as an S-corporation, which usually only makes financial sense once net profit is comfortably above $50,000 to $60,000 a year.

Do I need an LLC to get an EIN or open a business bank account?

No. Sole proprietors can get an EIN for free directly from the IRS and open a business bank account under a DBA. Neither requires an LLC, though some banks find it simpler to work with a registered entity than an individual operating under a trade name.

What happens to my LLC’s liability protection if I mix personal and business finances?

It can disappear. Courts look at exactly this kind of behavior, paying personal expenses from the business account, skipping basic recordkeeping, treating the LLC’s money as your own, when deciding whether to pierce the corporate veil. If that happens, a creditor or plaintiff can reach personal assets as if the LLC never existed.

Neither structure is a mistake. The sole proprietorship is what almost every business starts as, on purpose or by default. The LLC is what most of them become once there’s something real to protect.