One of the first questions people ask when they start a side business is whether they need to form an LLC. It feels like the official first step. It can also turn into a week of research, a state filing fee and a stalled launch before you have sold a single thing.
Here is a calmer way to think about it. This is general information, not legal or tax advice, and the rules vary by state.
You Already Have a Business Structure
According to the U.S. Small Business Administration, if you do business without registering as another kind of business, you are a sole proprietorship by default. You don’t file anything to become one. The SBA describes it as easy to form and fully in your control, and it says the structure can be a good fit for low-risk businesses and for owners who want to test an idea before committing to something more formal.
The trade-off is liability. A sole proprietorship isn’t a separate legal entity, so the SBA notes that you can be held personally liable for the business’s debts and obligations.
What an LLC Changes, and What It Doesn’t
The SBA says an LLC protects you from personal liability in most instances, which means personal assets like your home and savings are generally not at risk if the business is sued or goes bankrupt. It suggests LLCs for medium- or higher-risk businesses and for owners with significant personal assets to protect.
An LLC does not make your taxes disappear. The SBA notes that LLC members still pay self-employment tax. The IRS sets the combined self-employment tax rate at 15.3% (Social Security plus Medicare) and says you generally owe it once your net earnings from self-employment reach $400 or more, as of October 2026. Sole proprietors usually report business income on Schedule C, according to the IRS.
Cost varies too. The SBA says the total cost to register a business is usually less than $300 in most cases, but fees depend on your state and the structure you choose, and some states add annual reports or other ongoing requirements.
Questions to Ask Before You File
- What could realistically go wrong? Selling a downloadable planner carries different risks than offering services in someone’s home or giving financial guidance.
- Do you have significant personal assets you want to keep separate from the business?
- What does your state charge to form an LLC and to keep it in good standing each year?
- Do you have a first customer yet, or are you still testing whether anyone wants what you’re making?
If your honest answers are “low risk,” “not much to protect” and “still testing,” many people reasonably start as a sole proprietor and revisit the question once there is steady revenue. If the risk is higher, it’s worth paying a professional for an hour of advice before you launch.
Changing Later Is Possible, but Not Free
The SBA says you may be able to convert to a different structure later, but there may be restrictions depending on your location, and a change can have tax consequences. It also notes that changing ownership or structure generally means you need a new EIN. So “I’ll switch later” is a legitimate plan, as long as you know it comes with some paperwork.
Whichever way you go, keep business money separate from personal money from day one. A dedicated account and a simple spreadsheet of income and expenses will make tax time far easier.
Do This Today
Look up your state’s business filing office and write down three numbers: the fee to form an LLC, any annual report fee and the due date. Put them next to the business risks you listed above. You’ll have what you need to make the call, or to bring good questions to an accountant.
More on Totally Relentless
- What It Actually Costs to Start an Online Business on the Side
- Pick One Business Model for Your First 90 Days
