The complete comparison of LLC and C-Corporation covering pass-through versus double taxation, the S-Corp election, fundraising ability, ownership flexibility, formation cost, ongoing compliance, and the business profiles each structure serves best.
An LLC is the right default for small businesses, solo founders, real estate holdings, professional services, and profitable cash-flow operations. A Delaware C-Corporation is the right default for any startup raising institutional capital, granting ISOs, or building toward an acquisition or IPO. The S-Corp election sits between the two and can reduce self-employment taxes once a profitable owner-operator exceeds roughly USD 100,000 in net profit.
Choosing between an LLC and a corporation is the single most consequential decision in forming a US business. It drives how you are taxed, how you raise capital, how you pay yourself, how much paperwork you do each year, and whether you can grant equity to employees in a tax-efficient way. Yet the default advice ("LLC for small business, C-Corp for startups") papers over the complexity of the decision and leads many founders to the wrong structure.
The LLC is a state-law entity that provides limited liability with maximum operational flexibility. The C-Corporation is an older state-law entity that is a separate federal taxpayer and the standard vehicle for capital-raising businesses. The S-Corporation is not a separate entity type at all but a federal tax election that either entity can make to gain partial pass-through treatment. This guide compares the LLC and C-Corp across fifteen practical dimensions, explains the S-Corp election, and helps you choose the right structure for your specific business trajectory. For formation mechanics in specific states, see our guides for United States company formation and state-by-state formation steps.
Flexible, pass-through, founder-friendly
VC-ready, equity-friendly, separate taxpayer
| Factor | LLC | C-Corporation |
|---|---|---|
| Default federal taxation | Pass-through Winner | Double (21% corporate + dividend) |
| Federal corporate tax rate | N/A (flows to members) | 21% flat |
| Self-employment tax on profit | Yes on active members | No (wages only) Winner |
| S-Corp election available | Yes Winner | Yes (restrictive) |
| Ability to raise VC | Very limited | Standard vehicle Winner |
| Stock option / ISO plans | Not available | Standard Winner |
| Ownership flexibility | Unlimited members, any type Winner | Any number of shareholders, but complex |
| Foreign ownership | Allowed Winner | Allowed |
| Share classes | Flexible via operating agreement | Preferred + common Winner |
| Formation cost | USD 50-500 Winner | USD 50-500 |
| Annual compliance cost | USD 500-1,500 Winner | USD 1,500-4,000 |
| Required formalities | Minimal Winner | Board, officers, minutes, meetings |
| Loss deductibility | Members can deduct Winner | Trapped at entity level |
| QSBS (Section 1202) eligibility | No | Yes up to USD 10M or 10x basis Winner |
| Self-managed possible | Yes Winner | Requires officers and directors |
| Exit via stock sale | Complex, partnership rules | Clean, standard M&A Winner |
The Limited Liability Company (LLC) is the most popular entity type in the United States, accounting for more than 70% of new business formations in recent years. Created by Wyoming in 1977 and adopted by every state since, the LLC was designed to combine the limited liability protection of a corporation with the pass-through taxation and operational flexibility of a partnership. LLCs have members (not shareholders), are governed by an operating agreement rather than bylaws, and can be managed by the members themselves or by appointed managers.
By default, a single-member LLC is a disregarded entity (taxed as a sole proprietorship), and a multi-member LLC is taxed as a partnership on Form 1065 with K-1s to the members. Either can elect corporate taxation (Form 8832) or S-Corp taxation (Form 2553). In the default pass-through mode, the LLC itself pays no federal income tax - all profits, losses, deductions, and credits flow to the members' personal returns. Active members pay self-employment tax (15.3% on the first USD 168,600 of combined wage and SE income in 2026 for Social Security plus 2.9% Medicare on all SE income) on their share of active business income. The Qualified Business Income (QBI) deduction under Section 199A can shelter up to 20% of pass-through income, though it phases out for certain specified service trades or businesses above income thresholds. State taxation varies: California imposes an USD 800 annual franchise tax plus a gross-receipts-based LLC fee, Delaware charges USD 300 per year, and Wyoming and New Mexico are among the cheapest options.
A C-Corporation is the traditional American corporate form and the default federal tax treatment for any corporation that has not elected S-Corp status. It is a separate legal entity and a separate federal taxpayer, governed by a board of directors elected by shareholders, with officers appointed by the board to run day-to-day operations. Roughly 90% of US venture-backed startups and almost 100% of US public companies are C-Corporations, and the overwhelming majority are incorporated in Delaware because of its well-developed corporate case law, the Court of Chancery, and institutional familiarity. For founders planning to raise capital, see our detailed US company formation guide.
A C-Corporation pays federal corporate income tax at a flat 21% rate under the Tax Cuts and Jobs Act. When after-tax profits are distributed as dividends, shareholders pay personal tax on those dividends (0%, 15%, or 20% depending on income, plus 3.8% Net Investment Income Tax if applicable). This produces the classic double taxation. State corporate tax varies from 0% (Wyoming, South Dakota, Nevada, Texas, Washington) to over 9% (California, New Jersey), and Delaware charges a franchise tax based on shares authorized or assumed-par-value capital. Founders and early employees of qualifying C-Corps may exclude up to USD 10 million or 10x basis of gain from federal tax under Section 1202 (Qualified Small Business Stock) if stock is held for five years - one of the most valuable tax benefits in the US code and a major reason to choose C-Corp status if an exit is realistic. See our US corporate tax guide for rate detail.
The S-Corporation is not a separate entity type but a federal tax election filed on Form 2553. Both LLCs and C-Corps can elect S-Corp status if they meet the eligibility requirements: all shareholders must be US citizens or residents, there can be no more than 100 shareholders, and only one class of stock (with voting differences allowed) is permitted. Partnerships, most trusts, and foreign persons cannot be S-Corp shareholders.
Why elect? The S-Corp is a pass-through entity like an LLC (no corporate tax), but unlike an LLC, active owner-operators can take a portion of their profit as reasonable compensation (subject to payroll tax) and the rest as distributions (not subject to self-employment tax). For a profitable owner-operator earning USD 150,000 in net profit, splitting USD 80,000 as salary and USD 70,000 as distribution can save roughly USD 10,000 per year in self-employment tax compared to an LLC. The tradeoff is additional payroll administration, quarterly 941 filings, and the need to document reasonable compensation. The IRS aggressively audits S-Corps that pay unrealistically low salaries.
The S-Corp election generally makes sense once a solo professional services business, agency, or consulting firm consistently earns more than USD 80,000 to USD 100,000 in net profit per owner. It rarely makes sense for businesses planning to raise capital (VCs and foreign investors cannot hold S-Corp stock), for businesses with multiple share classes, or for real estate investment LLCs where self-employment tax is not an issue.
An LLC is the right structure for roughly 85% of new US businesses - solo founders, agencies, e-commerce brands, real estate, professional services, and cash-flow businesses. Switch to an S-Corp election once you consistently clear USD 100,000 in net profit per owner. Form a Delaware C-Corp from day one if you know you will raise institutional capital, grant equity, or target an acquisition. Starting as a C-Corp is simpler than converting later, and the QSBS clock starts the day you issue stock. For formation mechanics and state comparisons, see our United States formation hub and US corporate tax guide.
The core difference is taxation and governance. An LLC is a pass-through entity by default, so profits and losses flow directly to the members' personal tax returns. A C-Corporation is a separate federal taxpayer that pays 21% corporate income tax, and shareholders pay personal tax on any dividends distributed - the classic double taxation. Corporations also require formal governance (board of directors, officers, annual meetings, written minutes), while LLCs can be run from a simple operating agreement.
If you plan to raise venture capital, grant stock options, or eventually sell or IPO, form a Delaware C-Corporation. Every major US VC fund expects a C-Corp cap table and institutional investors cannot cleanly hold LLC interests. If you are bootstrapping or running a cash-flow business, form an LLC - it is simpler, cheaper, and tax-efficient. You can convert later, but starting as a C-Corp is cleaner if a VC round is realistic within 2 years.
An S-Corp is a federal tax election filed on Form 2553 that either an LLC or a C-Corp can make if it meets eligibility rules. It provides pass-through taxation like an LLC, but allows active owners to split income between wages (subject to payroll tax) and distributions (not subject to self-employment tax). The election typically saves owner-operators 10-15% on self-employment taxes once profits exceed USD 80,000 to USD 100,000 per owner. It is unsuitable for VC-backed businesses because institutional and foreign investors cannot be S-Corp shareholders.
State filing fees are similar, typically USD 50 to USD 500 depending on the state. The meaningful cost difference is ongoing compliance. Corporations require annual board and shareholder meetings, written minutes, and more complex federal tax returns (Form 1120). Expect USD 500 to USD 2,000 more per year in accounting fees for a C-Corp, plus franchise tax differences that vary significantly by state.
Yes, and this is common for startups that begin lean as an LLC and convert when raising their first priced round. A statutory conversion or Delaware F reorganization can be tax-free under IRC section 351 if structured properly. Expect USD 3,000 to USD 10,000 in legal fees, plus complications around 83(b) elections on founder shares and capital account reconciliation. Starting as a C-Corp is cleaner if you know an institutional round is within 12 to 24 months.
Both provide strong limited liability protection when properly maintained, and the substantive risk of veil-piercing is equivalent. Courts may pierce either structure if owners commingle personal and business funds, fail to observe corporate formalities, or leave the entity undercapitalized. Corporations are sometimes perceived as stronger because their formalities are rigid and well documented, but a properly run LLC provides equivalent protection from business debts and lawsuits.
Use our interactive tools to compare states, estimate costs, and build your document checklist.
