Business Entity Types: How to Choose the Right Structure
Choosing the wrong business structure costs you money, through unnecessary taxes, personal liability, or investor incompatibility. This guide walks through the four main entity types (sole proprietorship, LLC, S-Corp, and C-Corp), compares them across six key dimensions, and gives you a 4-question framework to find the right fit for your situation.
Last updated: July 2026
Quick answer:Most small business owners and freelancers should form an LLC. It protects your personal assets, taxes identically to a sole proprietorship by default, and gives you the option to elect S-Corp status later when profit justifies it. Only choose a C-Corp if you are raising venture capital.
4-Question Decision Framework
Answer these four questions to narrow down the right structure before reading the full comparison.
→ Multi-member LLC → operating agreement required; S-Corp available if ≤100 owners
Q2Do you need outside investors (venture capital or angel investors)?
Yes
→ C-Corp in Delaware, investors expect preferred stock and convertible notes
No
→ LLC is almost always the right choice, simpler and avoids double taxation
Q3Is your annual net profit consistently above $60,000?
Yes
→ Consider S-Corp election, saves $3K, $10K/yr in self-employment tax
No
→ Default LLC taxation, no payroll complexity, straightforward Schedule C
Q4Are you in a licensed profession (law, medicine, accounting, engineering)?
Yes
→ Check if your state requires a Professional LLC (PLLC) or PC instead
No
→ Standard LLC formation, no special requirements
Entity Type Comparison: All Five Structures
Factor
Sole Prop
LLC
S-Corp
C-Corp
Partnership
Liability protection
None, personal assets at risk
Yes, personal assets protected
Yes (same LLC, tax election only)
Yes, personal assets protected
General partners personally liable
Formation cost
$0
$35 to $520 state fee
Same as LLC + IRS form
$50 to $500 + registered agent
$0 to $200
Federal taxation
Pass-through (Schedule C)
Pass-through (default)
Pass-through, salary + distribution split
21% flat rate (double taxation risk)
Pass-through (Form 1065 + K-1s)
Self-employment tax
15.3% on all net profit
15.3% on all net profit
15.3% on salary only, distributions exempt
N/A, owner pays via W-2 wages
15.3% on each partner's share
Investors / outside equity
Not feasible
Membership units (less VC-friendly)
Max 100 shareholders; no non-US owners
Preferred stock, standard for VC
Limited partners can invest passively
Annual complexity
None, Schedule C on personal return
Annual report in most states
Payroll + Form 1120-S annually
Form 1120 annually + more compliance
Form 1065 + K-1 for each partner
The S-Corp column is a tax election, not a separate entity, and it only helps once profit is established. Across the 5.3 million active S-corporation returns the IRS counted for tax year 2022, average business net income was $144,924 per return, and only about 66% reported a net profit that year. See the full S-corp statistics → (Source: IRS Statistics of Income, Form 1120-S, tax year 2022.)
Deep-Dive Guides
Each guide below covers one entity comparison or topic in full detail, taxes, state costs, and the math.
The LLC hits a sweet spot no other structure matches: it gives you personal liability protection, keeps taxes as simple as a sole proprietorship by default, and leaves every advanced tax option (S-Corp election, C-Corp conversion) available to you later as your business grows. The filing fee of $35 to $520 is a one-time cost.
A sole proprietorship costs nothing to start, but every client contract, employee dispute, or slip-and-fall in your workspace can reach your personal savings and home. One lawsuit can wipe out everything you have built outside the business.
And you need that protection for years, not months: nationally, about 51.4% of new private-sector establishments are still operating five years after opening. (U.S. Bureau of Labor Statistics, Business Employment Dynamics) The liability shield of an LLC covers exactly those years, the ones where a single claim is most likely to end the business.
A C-Corp is worth the extra complexity only if you need institutional investors, preferred stock, or the IRC Section 1202 QSBS exclusion (which lets qualifying C-Corp founders exclude up to $10 million in capital gains from federal tax). For everyone else, the 21% corporate tax rate and double taxation on dividends make the C-Corp a poor fit.
Frequently Asked Questions
For most small businesses and freelancers, a single-member LLC is the best starting structure. It separates your personal assets from business liabilities, requires minimal ongoing compliance in most states, and files taxes almost identically to a sole proprietorship. Just add a Schedule C to your personal return. The LLC formation cost of $35 to $520 is a one-time expense that buys permanent liability protection. If your annual net profit consistently exceeds $60,000 to $80,000, layer an S-Corp election on top to reduce self-employment tax on the income above your salary. You would only choose a C-Corp over an LLC if you specifically need to raise venture capital, issue preferred stock to institutional investors, or want access to the IRC Section 1202 qualified small business stock exclusion.
An LLC and a corporation are both state-registered legal entities that protect owners from personal liability, but they differ in taxation, structure, and investor compatibility. By default, an LLC is a pass-through entity. All profit flows to the owner's personal return and is taxed at personal income tax rates. A corporation (C-Corp) is taxed as a separate entity at a flat 21% federal rate, and profits are taxed again when distributed as dividends (double taxation). An S-Corp is a tax election that can be applied to either an LLC or a corporation, enabling pass-through taxation with a salary-plus-distribution split to reduce self-employment tax. Corporations issue stock and are governed by more formal rules; LLCs use membership interests and are governed by an operating agreement.
Yes, and it is common. The two most frequent transitions are: (1) electing S-Corp status for an existing LLC by filing IRS Form 2553. This is purely a tax change with no state filing required; and (2) converting an LLC to a corporation if you later need to raise venture capital. Most states allow statutory conversion from LLC to corporation by filing a conversion document with the Secretary of State, though the conversion is typically a taxable event federally, and you should consult a tax professional before proceeding. You can also add members to a single-member LLC to create a multi-member LLC by amending your operating agreement and notifying the IRS of the classification change. The reverse, converting a corporation back to an LLC, is less common and more complex.
Not for most small business formations. If you are forming a standard single-member LLC or multi-member LLC with straightforward ownership, you can use a formation service or file directly with your state's Secretary of State for the filing fee alone. A lawyer adds value in three scenarios: (1) you have multiple founders with complex ownership splits or vesting schedules; (2) you are forming a C-Corp to raise venture capital and need a capitalization table and preferred stock terms; or (3) you are in a regulated profession where state law requires a Professional LLC or Professional Corporation. For the vast majority of freelancers, consultants, and small business owners, choosing between a sole proprietorship and an LLC is a straightforward cost-benefit decision, liability protection worth $100 to $500.
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