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Entity Formation guide

How to Start an LLC: The Complete Guide

From name to EIN to bank account — the exact steps to form an LLC with your state, plus what actually costs money and what doesn't.

Updated 2026-08-01·9 min read·Reviewed by AG FinTax

A limited liability company (LLC) is the most popular business structure in the United States for a reason: it protects your personal assets, keeps your taxes simple, and doesn't demand the formal governance of a corporation. If you're a solo consultant, an online seller, or a small partnership, an LLC is usually the right first move.

This guide walks through the real steps — including the ones that actually cost money and the ones you should never pay for.

Step 1 — Pick a name that passes your state's rules

Your LLC name must be distinguishable from every other registered business in your state. Three practical rules:

  • End with a required designator — most states require "LLC", "L.L.C.", or "Limited Liability Company" in the official name.
  • Avoid restricted words — "Bank", "Trust", "Insurance", and "University" typically require licensing or extra filings.
  • Check availability before you fall in love — your state's Secretary of State has a free business search. Use it early.
Your name is reserved at the state level, not the federal level. Registering an LLC in one state doesn't protect your name nationwide — that's what a trademark does later.

Step 2 — Choose your formation state

Most owners should form in their home state. Three situations push you elsewhere:

  • Delaware — if you plan to raise venture capital or go public, investors expect Delaware.
  • Wyoming or Nevada — lower fees and strong privacy, popular with asset holders.
  • Your home state is expensive — compare the combined state fee + franchise tax before deciding.

For 90% of small businesses, forming in your home state is the right call — it avoids the extra cost and paperwork of foreign qualification. See our guide on choosing a state.

Step 3 — Choose a registered agent

Every LLC needs a registered agent: a person or service that accepts legal mail (service of process, state notices) during business hours at a physical address in the formation state.

Your options:

  1. Yourself — free, but your address becomes public record and you must be reachable during business hours.
  2. A friend or family member — free-ish, but a real obligation that most people don't want to hand to a friend.
  3. A registered agent service — a small annual fee (ours is $149/year, well under LegalZoom's $249) for privacy and a reliable mailbox.
A registered agent is not optional. States require one on the formation filing, and many refuse or dissolve entities that lose theirs.

Step 4 — File your Articles of Organization

The Articles of Organization (sometimes called a Certificate of Formation) is the single official document that creates your LLC. It's short — name, address, registered agent, organizer — and it's what the state fee actually pays for.

Two ways to file:

  • Directly with your state — usually $40–$300 depending on the state and filing speed. You handle the forms and any mistakes yourself.
  • With a formation service — we prepare, review, and file the paperwork for you. Our Basic plan costs $0 (state fees only) because we don't believe you should pay for what should be cheap.

Step 5 — Get your EIN (Employer Identification Number)

An EIN is your business's federal tax ID — you need it to open a bank account, hire employees, file taxes, and sometimes to get a business credit card.

  • The IRS issues EINs for free. You can file Form SS-4 yourself in about 10 minutes.
  • Never pay a middleman. LegalZoom charges $79 for the exact same form. We obtain your EIN for free with every formation.

Step 6 — Write your Operating Agreement

An Operating Agreement is the internal rulebook for your LLC: who owns what, how profits are split, who makes decisions, and what happens if someone leaves.

Why it matters:

  • Required in CA, NY, MO, and ME — even for single-member LLCs.
  • Protects your liability shield — without it, courts can "pierce the veil" and treat you as a sole proprietor.
  • Banks require it — most won't open a business account without a signed one.
  • Prevents disputes — it settles arguments before they happen.

We include a state-specific Operating Agreement in our Pro plan and sell it standalone for $50 (LegalZoom charges $99).

Step 7 — Open a business bank account

Keep your LLC's money separate from your personal money. A separate account is the single best way to preserve your liability protection — co-mingling funds is how people lose lawsuits.

You'll need your EIN, your Articles of Organization, and your Operating Agreement. We offer a free warm introduction to our partner banks (Comerica in Texas, Chase, and Mercury for tech founders) that removes most of the paperwork friction.

Step 8 — Check business licenses

Federal, state, and local licenses vary by industry and city. A barbershop, a food truck, and a software consultancy need completely different paperwork.

If you're not sure what applies, our Business License Research service digs through federal + state + local requirements for your specific industry and city for a flat $49.

What it actually costs

ItemDIY costTypical service cost
State filing fee$40–$300Same (passed through)
EIN$0 (IRS)$0 with us (LegalZoom: $79)
Registered agent$0 self / $149 service$149/year with us (LegalZoom: $249)
Operating Agreement$0 if you draft it$50 with us (LegalZoom: $99)
Name search + forms$0$0 with us

Common questions

Do I need an attorney to form an LLC? No. Formation is form-filling — most people do it themselves or use a service. An attorney is worth hiring later for contracts, disputes, or unusual ownership structures.

Single-member or multi-member? It's the same filing in most states. The difference is tax treatment (default: disregarded vs. partnership) and that multi-member LLCs need all members to sign the Operating Agreement.

When should I form the LLC vs. do business first? Form before you sign anything, collect money, or take on liability. The shield protects from that point forward.

Can I form an LLC on a visa? In most cases yes — LLCs are open to US citizens, green card holders, and most visa/ITIN holders. There are some restrictions on S-Corp status specifically, which we cover in our visa guides.

Ready to start?

Answer a few questions and we'll file everything — Articles, EIN, Operating Agreement — with a CPA reviewing your setup. Start with a free name check.

Ready to put this into action?

A real CPA reviews your setup — and we file everything for you.

All guides

This guide is general information, not legal, tax, or accounting advice for your specific situation. State rules and fees change. For decisions that matter, review your plan with a licensed professional — AG FinTax's CPAs are available. See our disclaimer.