Starting an LLC while employed is legal in every state, and no formation office will ask whether you already have a job. The complications sit elsewhere: in the employment agreement you signed, in a duty of loyalty that applies even when nothing is written down, in who owns what you create, and in the tax bill that lands when no employer is withholding for you. Handle those, and the paperwork side is straightforward.
Read Your Employment Agreement Before You File Anything
Pull every document you signed when you were hired. Three kinds of clauses cause the most trouble for employees launching a side business, and any one of them can turn a legal LLC into grounds for termination or a lawsuit.
Non-Compete Clauses
A non-compete restricts you from launching or joining a competing business, usually for a set period within a defined geographic area. Most states enforce them if they are reasonable in scope, meaning they protect a genuine business interest without reaching further than necessary. Four states ban non-competes outright, and more than 30 others impose significant restrictions on when and how they can be enforced.
If your LLC operates in a completely different industry, a non-compete likely won’t touch it. If there is any overlap in products, services, or customer base, take the clause seriously. Courts sometimes strike down overly broad agreements, but “sometimes” is not a plan.
The FTC’s attempted nationwide ban on non-compete clauses was formally removed from the Code of Federal Regulations in February 2026.1Federal Register. Revision of the Negative Option Rule, Withdrawal of the CARS Rule, Removal of the Non-Compete Rule The FTC still has authority to challenge individual non-compete agreements, but non-compete enforceability remains a state-by-state question.
Non-Solicitation Clauses
Even without a non-compete, your agreement may bar you from recruiting your employer’s clients or co-workers for your new venture. These clauses are narrower than non-competes and generally easier for employers to enforce. If you plan to serve the same market your employer serves, a non-solicitation clause can still block your most obvious path to customers.
Confidentiality and NDAs
A confidentiality clause prevents you from using trade secrets, proprietary processes, pricing data, or customer lists outside your employment. It applies whether or not your LLC competes with your employer. Using insider knowledge for any business advantage can trigger a breach, and employers litigate these aggressively because the misuse is usually provable through records and communications.
The Duty of Loyalty Applies Even Without a Written Agreement
Here is what catches many side-business owners off guard. Under long-established common law, every employee owes their employer a duty of loyalty during the employment relationship, whether or not the contract says so. You cannot take business opportunities that belong to your employer, assist your employer’s competitors, or use your employer’s property or confidential information for your own benefit while you are still on the payroll.
You can prepare to compete after your employment ends. Researching markets, drafting a business plan, and forming the LLC itself are generally fine. Actively diverting business or clients while employed crosses the line. An employer who discovers a breach can pursue termination and, in many cases, damages in court.
Who Owns What You Create
Intellectual property is where side businesses and day jobs collide most expensively. Two frameworks decide who owns what.
Work Made for Hire
Under federal copyright law, a “work made for hire” is a work prepared by an employee within the scope of employment. The employer, not the employee, is the legal author and copyright owner from the moment the work is created.2Office of the Law Revision Counsel. United States Code Title 17 Section 101 Courts weigh several factors to decide whether something falls within the scope of employment, including where and when the work was created, whether employer tools were used, and whether the work relates to the employer’s business.3U.S. Copyright Office. Circular 30 – Works Made for Hire
The practical risk: if you build something for your LLC that overlaps with your employer’s business, even on your own time, the employer may have a credible ownership claim. The overlap does not have to be exact. A software developer who writes code at home in the same problem space their employer works in sits in a gray area courts resolve case by case.
Invention Assignment Clauses
Many employment contracts go further than the work-for-hire doctrine and require you to assign all inventions, software, or creative works to the employer, sometimes regardless of when or where you made them. These clauses can be extremely broad.
Roughly a dozen states, including California, New York, Illinois, Delaware, Minnesota, and Washington, limit these clauses. The general pattern: an employer cannot claim ownership of something you invented entirely on your own time, with your own equipment, that does not relate to the employer’s business or result from work you performed for the employer. If your state offers this protection, your contract’s assignment clause may be partially unenforceable, but the burden of proving the exemption usually falls on you. Document when, where, and with what resources you develop anything for your LLC.
Conflicts of Interest and Using Company Resources
A conflict of interest exists when your financial stake in the LLC could compromise your judgment or performance at work. The clearest example is an LLC that offers the same products or services as your employer, but conflicts can also arise from subtler overlaps: sharing suppliers, targeting the same customers, or sitting on information at your day job that would benefit your LLC.
Keep a hard boundary between the two roles. Never use company time, equipment, software, email, or network access for LLC work. Even printing business cards on an office printer can be characterized as misuse of company property. Beyond the ethical problem, using employer resources for personal gain can lead to termination, civil liability, and in serious cases, criminal charges for theft of company assets.
Run your LLC as if your employer’s name, clients, and tools do not exist. If you find yourself thinking “nobody will notice,” the line is too close.
Whether to Tell Your Employer
Some employment contracts require you to disclose outside business activities. If yours does, the decision is already made: disclose, or risk termination for breach of your agreement. Skipping a required disclosure is one of the fastest ways to turn a legal side business into grounds for firing.
When disclosure is optional, the calculus is more nuanced. If your LLC operates in a completely unrelated field and your contract is silent on side businesses, there may be no practical reason to volunteer the information. If there is any arguable overlap, getting ahead of it protects you. A short conversation with your manager or HR, framed as transparency rather than asking permission, creates a record that you acted in good faith. That record matters if a conflict question surfaces later.
One separate point worth knowing: if you are laid off while operating an LLC, income the LLC generates can reduce your unemployment benefits. States vary on how much you can earn before benefits shrink, but all of them require you to report the income when filing weekly claims. Failing to report it is classified as unemployment insurance fraud.
How to Form the LLC
Once your agreements are clear, the mechanics are straightforward.
- Choose a business name. Every state requires your LLC’s name to be distinguishable from existing registered businesses, and most require it to include “LLC” or “Limited Liability Company.”
- Designate a registered agent, meaning a person or service authorized to receive legal documents for your LLC. You can serve as your own registered agent in most states, but a commercial service keeps your home address off public records.
- File articles of organization with your state’s Secretary of State or equivalent office. Filing fees typically run from $50 to $500.
- Get an Employer Identification Number if your LLC will have employees or more than one member. A single-member LLC with no employees is not strictly required to have one, but most banks require an EIN to open a business account.4Internal Revenue Service. Single Member Limited Liability Companies
- Draft an operating agreement. Even where the state does not require one, it formalizes how the LLC is managed and how profits are distributed. Without it, your LLC can resemble a sole proprietorship in the eyes of a court, which undermines the liability protection you formed it to get.5U.S. Small Business Administration. Basic Information About Operating Agreements
- Open a separate bank account. Mixing personal and business funds is the most common way LLC owners lose their liability shield.
- Check local license requirements. Depending on your industry and location, you may need a business license, a professional permit, or both before you start operating.
The Tax Obligations You’ll Pick Up
This is the part most first-time LLC owners wish someone had shown them earlier. Your W-2 employer handles income tax withholding, Social Security, and Medicare contributions from your paycheck. Your LLC does not. New tax obligations sit on top of what you’re already paying.
How LLC Income Is Taxed
A single-member LLC is treated as a “disregarded entity” for federal tax purposes. The IRS ignores the LLC and taxes its income directly to you.4Internal Revenue Service. Single Member Limited Liability Companies You report the LLC’s revenue and expenses on Schedule C, filed with your personal Form 1040.6Internal Revenue Service. Instructions for Schedule C (Form 1040) Whatever net profit remains after expenses gets added to your W-2 wages, and you pay income tax on the combined total at your marginal rate.
Multi-member LLCs are taxed as partnerships. The LLC files an informational return (Form 1065), and each member receives a Schedule K-1 showing their share of income, which they report on their personal return.
Self-Employment Tax
This is the one that stings. Your W-2 employer pays half of your Social Security and Medicare taxes. On LLC income, you pay both halves. The self-employment tax rate is 15.3%: 12.4% for Social Security and 2.9% for Medicare. The Social Security portion applies only up to an annual wage base that combines your W-2 wages and self-employment income; the Medicare portion applies to every dollar of net earnings with no cap. If your combined income exceeds $200,000 as a single filer, an additional 0.9% Medicare tax kicks in.7Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
You can deduct the employer-equivalent portion (half of your self-employment tax) when calculating adjusted gross income. That helps, but it does not eliminate the bite. On $10,000 in LLC profit, expect roughly $1,400 to $1,530 in self-employment tax alone, before income tax.
Quarterly Estimated Payments
Because no employer is withholding taxes from your LLC income, the IRS expects you to pay as you go through quarterly estimated payments. You generally owe estimated tax if you expect to owe at least $1,000 after subtracting your W-2 withholding and credits.8Internal Revenue Service. Estimated Tax for Individuals
The quarterly due dates are:
- April 15 for income earned January through March
- June 15 for income earned April through May
- September 15 for income earned June through August
- January 15 of the following year for income earned September through December
One workaround: if your LLC income is modest, you can often avoid quarterly payments by increasing the withholding on your W-2 paycheck. The IRS does not care where the withholding comes from as long as enough tax gets paid throughout the year. Submitting a new W-4 to your employer with reduced allowances is simpler than four separate estimated payments.9Internal Revenue Service. Estimated Tax
Deductions
Your LLC can deduct ordinary and necessary business expenses, including supplies, software, advertising, professional services, and home office costs. In your first year, you can elect to deduct up to $5,000 in startup costs outright, though that amount phases down if total startup costs exceed $50,000.10Internal Revenue Service. Publication 583 – Starting a Business and Keeping Records Anything you cannot deduct immediately gets amortized over 15 years. Keep thorough records from day one; that is what makes these deductions survive an audit.
Keeping the Liability Shield Intact
Forming the LLC is step one. Maintaining it as a genuinely separate entity is what actually protects your personal assets. Courts can “pierce the veil” and hold you personally liable if you treat the business as an extension of yourself.
The basics that matter most: keep your operating agreement current, maintain a dedicated business bank account, never pay personal expenses from the business account or vice versa, file your state’s annual report on time, and sign contracts in your capacity as an LLC member or manager rather than in your personal name.5U.S. Small Business Administration. Basic Information About Operating Agreements These formalities feel tedious when your LLC is small. They are exactly what a creditor’s attorney will scrutinize if something goes wrong.
Most states require an annual or biennial report, typically costing between $50 and several hundred dollars. Missing that filing can result in administrative dissolution, at which point you lose the liability shield entirely until you reinstate the LLC.