5M+ businesses form each year — most pick the wrong structure →

Starting a business? Get the structure right from day one.

Choosing between an LLC, S-Corp, and C-Corp affects your taxes, your liability protection, and how easily you can raise money later. Most founders guess, or copy what a friend did. Answer a few quick questions and get a clear, general recommendation — then connect with a trusted formation service to file, free and with no obligation.

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Which structure fits my business?

Answer a few quick questions about your business type, state, employees, and growth plans for a general, educational recommendation — no signup required to see your result.

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General information only, not legal or tax advice. Using this tool doesn't create an advisory relationship.

The structure you pick shapes everything that follows

Your entity choice affects how you're taxed, how exposed your personal assets are, how easy it is to bring on investors or partners, and how much paperwork you'll deal with every year. Most founders spend more time picking a business name than picking a structure — and it's usually the more expensive mistake to fix later. Getting clear on the basics now can save real money and hassle down the road.

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LLC, S-Corp, or C-Corp: which fits your business?

Tell us a bit about your business and get a general, educational recommendation. This isn't legal or tax advice — the right choice depends on your full situation, and a licensed attorney or accountant can confirm what's best for you.

General educational recommendation only, not legal or tax advice. Confirm with a licensed attorney or accountant before filing.

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Fill in the details on the left and a general, educational read on LLC vs S-Corp vs C-Corp will show up right here.

Every stage of formation

What are you trying to get done?

Business formation covers more ground than most people realize. Here's the full picture, in plain English.

Most common

LLC Formation

Flexible, simple structure that fits most small businesses. Learn more →

Tax election

S-Corp Election

A tax status, not a separate entity — here's how and when it can help. Learn more →

Investor-ready

C-Corp Formation

The standard structure for startups planning to raise venture capital. Learn more →

Required by law

Registered Agent Service

Nearly every state requires one — here's what that actually means. Learn more →

After you file

EIN / Tax Setup

Your federal tax ID number, and why you'll need it almost immediately. Learn more →

Where to file

State-Specific Filing

Costs, timelines, and requirements vary a lot by state. See state guides →

Single vs multi

Ownership Structure

How single-member and multi-member LLCs are treated differently. Learn more →

Compare

Every formation topic

See the complete list of business formation topics we cover. View all →

Free interactive tool

State incorporation cost estimator

Get a general sense of what forming a business in your state typically involves. These are illustrative ranges, not exact quotes — always confirm current fees with your state's business filing agency.

Compare at a glance

LLC vs S-Corp vs C-Corp

 LLCS-Corp (tax election)C-Corp
Liability protectionGenerally yes, for ownersGenerally yes, for ownersGenerally yes, for owners
TaxationPass-through by defaultPass-through, may reduce self-employment taxCorporate tax, then dividends taxed again
OwnershipFlexible, few restrictionsLimited to 100 U.S. shareholdersUnlimited shareholders, can issue stock classes
Good fit forMost small & solo businessesProfitable small businesses managing self-employment taxStartups raising venture capital
Ongoing paperworkGenerally lighterPayroll & additional filings requiredHeaviest — board, bylaws, minutes

A simplified, general overview — the right structure depends on your full situation, and requirements vary significantly by state. Speak with a licensed attorney or accountant before filing.

Quick self-check

Do I need a registered agent?

Check any that apply for a general, educational read on your registered agent situation.

Ask FormAdvisor AI

Clear, plain-English answers, any time

Ask how LLCs and corporations generally differ, what a registered agent does, or how S-Corp election works. For your specific situation, FormAdvisor AI will point you to a formation specialist.

FormAdvisor AI
AI Business Structure Assistant · general information · not legal or tax advice
Hi, I'm FormAdvisor AI. Tell me about your business and I'll explain how entity choice generally works. Try: "What's the difference between an LLC and an S-Corp?" I can't advise on your specific situation, but I can point you to a formation specialist who can.
Recommended resources

Trusted formation services

We don't rank or endorse one service as universally "best" — each has strengths depending on your needs. As an affiliate partner, we may earn a commission if you use one of these services, at no extra cost to you.

Full-service filing

LegalZoom

One of the most established online formation services, with add-on legal plans.

Visit LegalZoom →
Budget-friendly

ZenBusiness

Formation packages with ongoing compliance support at competitive pricing.

Visit ZenBusiness →
Low-cost filing

Incfile

Straightforward LLC and corporation filing with transparent pricing tiers.

Visit Incfile →
Privacy-focused

Northwest Registered Agent

Known for registered agent service and privacy-conscious filing support.

Visit Northwest →

We are an independent information resource. Mentioning a service here is not an endorsement or ranking, and inclusion doesn't guarantee it's the right fit for your business. See our advertising & affiliate disclosure.

Helpful resources for your next step

Books & guides founders reach for

Formation services handle the paperwork — these books and references help with everything around it, from choosing a structure to keeping the books. As an Amazon Associate, we may earn from qualifying purchases.

Formation & Legal Guides

Choosing and setting up your entity

Guide

๐Ÿ“˜ Start Your Own Business Guide

The well-known Nolo-style guide to launching and structuring a small business.

Amazon →
Formation

๐Ÿ“— Form Your Own LLC Guide Book

A step-by-step reference for LLC formation and operating agreements.

Amazon →
Reference

โš–๏ธ LLC vs S-Corp Guide Book

A plain-English comparison book for founders weighing entity types.

Amazon →
Template

๐Ÿ“„ Business Formation Document Organizer

A binder/organizer for keeping formation and compliance paperwork in order.

Amazon →
Bookkeeping & Tax

Keeping the books straight

Bookkeeping

๐Ÿ“Š Bookkeeping for Small Business Owners

A beginner-friendly guide to tracking income, expenses, and recordkeeping.

Amazon →
Tax

๐Ÿงพ Small Business Tax Guide Book

A plain-English reference on small business tax basics and deductions.

Amazon →
Accounting

๐Ÿงฎ Accounting Basics for Small Business

An accessible introduction to small-business accounting fundamentals.

Amazon →
EIN

๐Ÿชช EIN & Business Tax Filing Reference

A reference guide covering EIN basics and federal filing requirements.

Amazon →
Startup & Fundraising

Raising money and scaling

Fundraising

๐Ÿ’ผ Venture Deals Reference Book

A widely recommended book on how venture capital term sheets and fundraising work.

Amazon →
Guide

๐Ÿš€ Startup Fundraising Guide Book

A reference book on the startup fundraising process from seed to Series A.

Amazon →
Growth

๐Ÿ“ˆ Entrepreneurship & Startup Growth Book

A general read on building and scaling an early-stage company.

Amazon →
C-Corp

๐Ÿ›๏ธ C-Corp Startup Formation Guide

A general guide to forming and running a C-Corp for venture-backed startups.

Amazon →
Business Planning & Branding

Planning, naming, and organizing

Planning

๐Ÿ“ Business Plan Writing Guide Book

A reference for building a clear, investor-ready business plan.

Amazon →
Template

๐Ÿ“‹ Business Plan Template Book

A structured workbook with fill-in templates for a first business plan.

Amazon →
Branding

๐Ÿท๏ธ Business Naming & Branding Guide

A guide to naming and branding a new business the right way.

Amazon →
Organization

๐Ÿ—„๏ธ Home Office & Business Organization Kit

Desk and filing organization products for a new home-based business.

Amazon →

These are general product category suggestions, not endorsements of specific titles or editions. See our advertising & affiliate disclosure.

Questions people ask us

Business formation FAQ

Should I form an LLC or a corporation?
It depends on your goals. LLCs are generally simpler to run and offer flexible tax treatment, which suits many small businesses. Corporations (S-Corp or C-Corp) can make more sense if you plan to raise outside investment, issue stock, or eventually go public. This is general information, not legal or tax advice.
Do I need to incorporate in Delaware?
Not necessarily. Delaware is popular for its established business courts and investor familiarity, especially for startups raising venture capital, but most small businesses can incorporate in their home state and avoid the cost of registering as a foreign entity elsewhere.
How much does it cost to form an LLC?
State filing fees for an LLC generally range from roughly $50 to a few hundred dollars, plus possible annual report or franchise tax fees that vary widely by state. Exact costs change over time, so confirm current fees with your state's business filing agency.
Do I need a registered agent?
Yes — nearly every state requires an LLC or corporation to designate a registered agent with a physical address in the state of formation to receive legal and state correspondence. You can often serve as your own registered agent or use a commercial registered agent service.
What's the difference between forming an LLC and getting an EIN?
Forming an LLC creates the legal entity itself, typically through your state's business filing agency. An EIN (Employer Identification Number) is a separate federal tax ID from the IRS that most businesses need afterward to open a bank account, hire employees, or file taxes.
Free download

The Business Formation Starter Guide

A clear, no-jargon guide: how to choose between LLC, S-Corp, and C-Corp, a step-by-step incorporation checklist, and the exact questions to ask before hiring a formation service. Yours instantly.

  • How to choose your business structure
  • A step-by-step incorporation checklist
  • What a registered agent actually does
  • 10 questions to ask before hiring a formation service

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