LLC or Sole Proprietor: The Side Hustle Structure Decision, With Real Numbers

At some point in every side hustle's life, someone says "you should form an LLC." They might be right. They're usually right eventually. But the timing matters more than most people realize, and in some states, forming one too early costs money for no real benefit.

Here is what the decision looks like with numbers attached.

What an LLC does (and doesn't do)

An LLC, a limited liability company, creates a legal separation between you and your business. If a client sues the business, they're suing the LLC — not you personally. Your savings account, your car, your apartment: in theory, those aren't on the table.

In practice, that protection has conditions. Courts can "pierce the corporate veil" if you commingle personal and business funds, skip the formalities (operating agreement, separate bank accounts), or run the LLC with no real capitalization. The protection works when you treat the LLC like a separate entity.

What an LLC does not do, on its own, is save money on taxes.

As a sole proprietor, you pay self-employment tax on your net profit: 15.3% up to the Social Security wage base ($174,900 in 2026), then 2.9% on everything above. An LLC taxed as a sole proprietor, the default for single-member LLCs, pays the exact same rate. No change.

The tax savings come from a separate election. More on that below.

The cost math

Forming an LLC costs money upfront and, in most states, ongoing.

| State | Filing fee | Annual fee | |---|---|---| | Wyoming | $100 | $62 | | Delaware | $90 | $300 | | Florida | $125 | $138.75 | | Texas | $300 | $0 (franchise tax based on revenue) | | New York | $200 | $9 (plus publication requirement: $800–$1,800) | | California | $70 | $800 minimum franchise tax |

California is the one that trips people up. Every LLC registered there pays at least $800/year in franchise tax, regardless of whether it turns a profit. On a side hustle bringing in $15,000/year, that's 5% of gross before doing anything else.

Add a registered agent if you're not using yourself ($50–$300/year from services like Northwest Registered Agent or Registered Agents Inc.), and optionally an operating agreement ($0 with a template, $200–$500 if you want an attorney to review it).

Realistic first-year cost for a single-member LLC: $300–$700 in most states, $1,000–$2,500 in New York, $870+ in California.

When the math doesn't work

The liability protection argument only holds up when you have assets worth protecting and a realistic risk of being sued.

Freelance writing, graphic design, spreadsheet work: the contract dispute risk is real but usually manageable. A $5,000 project gone wrong is unlikely to threaten your personal finances unless something was genuinely negligent. For that exposure level, a professional liability insurance policy (also called errors and omissions, or E&O) runs $500–$1,500/year and is often cleaner protection than an LLC.

If you're in a high-fee state and your net income is under $30,000/year, the cost-to-benefit math rarely works in the LLC's favor.

When it does work

The liability case gets stronger when:

You sell physical products (product liability risk is concrete)
You have employees or subcontractors
Your gross revenue is $50,000/year or more
You're signing multi-thousand-dollar contracts with real dispute potential
You want the legal separation for discipline: keeping business finances permanently separate from personal

At $50,000+ in net profit, there's also a meaningful tax play available through the entity.

The S-corp election

Once your side hustle clears roughly $50,000 in net profit, an LLC with an S-corporation election can reduce your SE tax bill.

The mechanism: an S-corp requires you to pay yourself a "reasonable salary" and take the remaining profit as a distribution. SE tax applies only to the salary, not the distribution.

Worked example at $100,000 net profit:

| | Sole proprietor / single-member LLC | LLC with S-corp election | |---|---|---| | Salary | N/A | $60,000 | | Distribution | N/A | $40,000 | | SE tax on salary | $15,300 | $9,180 | | SE tax on distribution | $0 | $0 | | SE tax total | $15,300 | $9,180 | | Gross savings | | $6,120 |

From that $6,120, subtract payroll processing costs. Gusto charges $46/month ($552/year) for single-owner S-corps. Patriot Payroll runs $17–$37/month. Call it $600–$750/year at the low end.

Net savings at $100,000 net profit: roughly $5,400/year.

The S-corp election has a deadline. To apply it to the current tax year, you file IRS Form 2553 by March 15 of that year (or within 75 days of the LLC's formation for a new entity). Miss the window and you wait until next year.

The IRS definition of "reasonable salary" is vague by design, but a defensible starting point: what would you pay an outside hire to do your job? For a solo freelance designer billing $100,000, a salary of $55,000–$70,000 is typically fine. Paying yourself $1 to maximize distributions draws scrutiny.

The decision framework

Under $30,000 net income: Probably skip the LLC for now. Get professional liability insurance if your work warrants it. Open a dedicated business checking account regardless (sole proprietors can do this; it's just a bank account, not a legal structure). Keep clean books.

$30,000–$50,000 net income: The liability protection argument starts to hold. Form an LLC if you're in a low-fee state, doing client-facing work, and want the legal separation. Hold off in California unless there's a specific reason.

$50,000+ net income: Talk to a CPA before the next March 15 about the S-corp election. The annual savings compound and the payroll overhead is modest compared to the SE tax reduction.

One thing that applies at every level: the business bank account is non-negotiable. Commingled finances are how LLCs lose their liability protection and how sole proprietors create a tax season nightmare.

For informational purposes only. Not financial, tax, or legal advice. Talk to a CPA or attorney for your specific situation.