What Is a Single-Member LLC?
A Single-Member LLC is an LLC with one owner — you get liability protection like a corporation, taxed like a sole proprietor by default, but with far more credibility and separation. Here’s how it works and how to start one right.
The Short Version
Simplest LLC structure — one person, full control, separate legal entity.
How a Single-Member LLC Works
A Single-Member LLC (SMLLC) is an LLC owned by one person or one entity. Legally, it is the same as a multi-member LLC — it is a separate legal entity from you that can own property, open a bank account, sue and be sued, and protects your personal assets from business debts and lawsuits if you maintain separation.
For federal tax purposes, the IRS treats a single-member LLC as a “disregarded entity” by default. That means the LLC itself doesn’t file a separate tax return. You report profits and losses on Schedule C of your personal Form 1040, and pay income tax + self-employment tax (15.3%) on net profit. No double taxation.
You can also elect to be taxed as an S-corp or C-corp later if it saves you money — you don’t need to form a different entity.
Liability Protection
Your personal house, car, and savings are protected from business lawsuits and debts if you keep business and personal finances separate.
Simple Taxes
Taxed like a sole proprietor by default — no corporate return, no 1120, no 1065 partnership return. Just Schedule C + Schedule SE on your 1040.
Full Control
You make all decisions. No partners to consult, no voting deadlocks. You can be member-managed by default.
How Single-Member LLCs Are Taxed
This is where most confusion happens — it’s simpler than you think.
Default: Disregarded Entity (Sole Proprietorship)
By default, IRS ignores your LLC for income tax. You report business income and expenses on Schedule C attached to your personal Form 1040. Net profit flows to your personal return and is taxed at your individual rate + 15.3% self-employment tax (Social Security + Medicare). You pay quarterly estimated taxes (Form 1040-ES) since there’s no employer withholding.
You can deduct half of self-employment tax and all ordinary business expenses — rent, software, marketing, etc. — which lowers both income and self-employment tax.
| Tax Option | How It Works | Best For |
|---|---|---|
| Default (Disregarded) | Schedule C on personal 1040 + Schedule SE for self-employment tax | Most SMLLCs starting out |
| S-Corp Election (Form 2553) | Pay yourself reasonable salary subject to payroll tax, remaining profit distributed without self-employment tax | Net profit $60k+ consistently |
| C-Corp Election (Form 8832) | LLC taxed as C-corp — pays corporate tax, then dividends taxed again. Double taxation | Rare — only if planning VC funding |
When to consider S-corp: Once your SMLLC consistently nets $60k-$80k+ after expenses, electing S-corp can save you thousands in self-employment tax. You must run payroll and pay yourself a reasonable salary. Talk to a CPA before electing — it’s not worth it for lower profits due to payroll costs.
How to Start a Single-Member LLC in 5 Steps
Same filing as any LLC — you just list one member.
Choose a Name and State
Include “LLC” or “L.L.C.” and make it distinguishable. Your home state is usually best — forming in Delaware/Wyoming while living in California or New York still forces you to foreign qualify and pay $800 in CA anyway.
- Search Secretary of State / Corporation Commission database
- Check domain/social availability
Appoint a Registered Agent
Every state requires a registered agent with a street address in that state. Can be you, but using a service keeps your home address off public record and ensures you never miss legal mail.
- Must have physical address — P.O. Box not allowed
- Free year 1 with Bizee, Doola, LegalZoom
File Articles of Organization
File with Secretary of State (or ACC in Arizona). This creates your LLC legally.
- Fee: $50 AZ, $70 CA, $200 NY, $0-$300 other states
- Info needed: LLC name, address, registered agent, management (member-managed for SMLLC), organizer signature
- Processing: 1-7 days online typically
Create a Single-Member Operating Agreement
Even with one owner, you NEED an Operating Agreement. Banks require it to open a business account, courts use it to prove you are separate from LLC (protecting veil), and some states like New York legally require it.
- Defines you as 100% owner, how profits distributed, what happens if you transfer or die
- Do not file with state — keep with records
- Template included with Standard plans from Bizee, Doola, LegalZoom
Get EIN & Open Business Bank Account
EIN is free from IRS.gov (15 mins). Then open separate business bank account immediately — commingling funds is the #1 reason courts pierce single-member LLC veil.
- EIN required even with no employees
- Use EIN + Articles + Operating Agreement to open account
- Set aside 25-30% of income for quarterly estimated taxes
Biggest mistake with SMLLCs: Treating LLC money as personal money. If you pay personal rent from LLC account or vice versa without documentation, a court can disregard your LLC and hold you personally liable. Always transfer via owner draw/distribution and keep bookkeeping clean.
Single-Member LLC vs Other Structures
| Feature | Single-Member LLC | Sole Proprietorship | S-Corp / C-Corp |
|---|---|---|---|
| Liability Protection | Yes — personal assets protected | No — you are personally liable | Yes |
| Tax Complexity | Low — Schedule C on 1040 | Low — Schedule C | High — corporate return, payroll, 1120S/1120 |
| Self-Employment Tax | On full net profit by default | On full net profit | S-corp: only on salary; C-corp: payroll tax on salary |
| Credibility with Banks/Clients | High — LLC looks professional | Low — personal name | High |
| Ongoing Compliance | Low — depends on state ($0 AZ, $9 biennial NY, $800 CA franchise) | None | High — annual reports, board minutes, payroll |
| Best For | Freelancers, consultants, e-com, side hustles wanting protection + simplicity | Testing idea with zero cost | High-profit, hiring employees, raising investment |
Best Services to Start Your Single-Member LLC
All three handle single-member LLCs correctly — difference is price vs legal support.
Bizee
Free LLC formation — you only pay state fee. Free registered agent year 1, lifetime compliance alerts, dashboard to manage single-member docs. Best if you want cheapest compliant formation and will get EIN free from IRS yourself.
Doola
Doola bundles SMLLC formation + EIN + US bank account + bookkeeping + tax filing support. Perfect for single-member LLC owners who hate bookkeeping and want quarterly tax estimates handled. Great for remote founders and freelancers.
LegalZoom
LegalZoom provides attorney-drafted single-member Operating Agreement and helps with S-corp election (Form 2553) when your SMLLC profit grows. Best if you want attorney review and long-term legal ecosystem.
Our pick for most SMLLCs: Start with Bizee Basic $0 + state fee if you want cheapest, then handle EIN free at IRS.gov. Choose Doola if you want bookkeeping/taxes off your plate. Choose LegalZoom if you plan to elect S-corp or want attorney-reviewed Operating Agreement for extra veil protection.
Single-Member LLC FAQ
Yes. Even though you are the only owner, banks require it to open a business account, New York legally requires it within 90 days, and courts use it to prove your LLC is separate from you. Without it, it’s easier for a creditor to pierce your veil. All formation services include a template.
Yes. A single-member LLC refers to ownership, not employees. You can hire W-2 employees and 1099 contractors. Once you hire, you must get workers comp, run payroll, and file employment taxes — EIN required.
Depends on state: Arizona $0 no report, New York $9 biennial, California $20 Statement + $800 franchise tax annually, Delaware $300 annual tax, most other states $0-$100 annual report. Check your state — formation services track this with compliance alerts.
Yes. File Form 2553 with IRS within 75 days of formation or by March 15 of tax year you want election. You then pay yourself reasonable salary via payroll, remaining profit distributed not subject to self-employment tax. Generally makes sense once net profit is consistently $60k-$80k+.
SMLLC is almost always better if you are making money. Sole proprietorship offers zero liability protection — if business is sued, your personal assets are at risk. SMLLC gives you protection for $50-$200 state fee, same tax treatment as sole prop by default, and more credibility with banks and clients.
Yes. US allows foreign-owned single-member LLCs. You need a registered/statutory agent with US address and EIN from IRS (obtainable without SSN via Form SS-4). Doola specializes in this for non-US founders. Tax treatment depends on effectively connected income and treaty — get CPA.
Ready to Start Your Single-Member LLC?
File for as low as $0 + state fee with free registered agent year 1. Keep business and personal finances separate from day one to protect your liability shield.
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