LLC vs C Corp: Which Is Better for Your Business?

The LLC vs C corp question comes up at two moments: a profitable LLC whose owners wonder whether the 21% corporate rate would beat what they pay now, and a startup told that the investment only closes if the company is a corporation. The tax answer differs in each case. This post covers the two-way choice; the three-way comparison that adds an S corporation is in LLC vs S corp vs C corp.

One layer of tax or two: the difference between an LLC and a C corp

A limited liability company is a creature of state law. The Internal Revenue Code has no LLC tax; it classifies the LLC. A domestic LLC with one member is disregarded, so its profit is reported on the owner's Schedule C, and an LLC with two or more members is a partnership that files Form 1065 and hands each member a Schedule K-1, unless the LLC files Form 8832 and elects to be treated as a corporation (IRS, Limited Liability Company). Both defaults are one layer of tax: the profit is taxed on the owners' returns in the year it is earned, whether or not any cash comes out, at 2026 brackets that run from 10% to 37%, the top rate starting at $768,700 of taxable income on a joint return and $640,600 for single filers (Rev. Proc. 2025-32). Active owners also owe self-employment tax: 12.4% Social Security tax on 92.35% of net profit up to the $184,500 wage base for 2026, 2.9% Medicare tax on all of it, and 0.9% Additional Medicare Tax above $250,000 joint or $200,000 single (IRC 1401; Publication 15). Against that, a pass-through owner can deduct up to 20% of qualified business income under section 199A, permanent under P.L. 119-21; the limits are in the QBI deduction.

A C corporation is a separate taxpayer. It files Form 1120 and pays “21 percent of taxable income” (IRC 11(b)), a flat rate with no brackets. Nothing more is owed until profit reaches the shareholders. When it does as a dividend, the shareholder pays a second tax: qualified dividends are taxed at the long-term capital gain rates of 0%, 15% and 20% (IRC 1(h)). For 2026 the 0% rate covers taxable income up to $98,900 on a joint return and $49,450 for single filers, the 15% rate runs to $613,700 joint and $545,500 single, and 20% applies above that (Rev. Proc. 2025-32, section 3.03), plus the 3.8% net investment income tax once modified AGI passes $250,000 joint or $200,000 single (IRC 1411). An owner who works in the corporation is paid a salary, deductible to the corporation and taxed as wages with FICA rather than self-employment tax.

LLC vs C corp side by side

The same $300,000 of profit as an LLC and as a C corporation (an illustration)

Read across the bottom row. The corporation wins only while the profit stays inside it, by about $2,000 here. Once the same profit comes out as a dividend, the two layers cost roughly $13,900 more than one. A salary would move both corporate columns: it is deductible to the corporation, taxed to the owner at ordinary rates and subject to FICA. The LLC column is helped by the QBI deduction; owners whose taxable income passes the 2026 thresholds ($403,500 joint, $201,750 single) face the W-2 wage and property limits described in the QBI post.

Form 8832: becoming a C corporation for tax without changing your LLC

An LLC does not have to reincorporate to be taxed as a corporation. It files Form 8832, Entity Classification Election, and chooses classification as an association taxable as a corporation. The election “can take effect no more than 75 days prior to the date the election is filed, nor can it take effect later than 12 months after the date the election is filed” (Form 8832 instructions, line 8). Once an existing LLC changes its classification by election, it cannot change again by election “during the sixty months succeeding the effective date of the election” (Treas. Reg. 301.7701-3(c)(1)(iv)). For tax purposes the switch from partnership to corporation is a deemed transaction: the partnership contributes all of its assets and liabilities to the new corporation in exchange for stock and then liquidates by distributing that stock to the partners (Treas. Reg. 301.7701-3(g)(1)(i)), which is why the LLC's assets, debts and each owner's basis get reviewed before the form is filed. The mechanics and late relief are in Form 8832; an LLC that wants S status files Form 2553 instead.

Why investors and equity plans push startups toward a C corporation

Three things about a C corporation matter to venture and angel investors, and none is the tax rate. The first is stock: a corporation can issue preferred stock with a liquidation preference and grant options under a plan, which the standard financing documents assume. An S corporation may not have “more than 1 class of stock” (IRC 1361(b)(1)(D)) or a nonresident alien shareholder, and an LLC has membership interests rather than shares. The second is the K-1: an investor holding an LLC interest reports a share of the company's income every year, while a holder of C corporation stock reports nothing until a dividend or a sale. The third is section 1202, below. Startups that expect a priced round usually elect corporate status before the first grant, while the deemed contribution on conversion is small.

Qualified small business stock after P.L. 119-21

Section 1202 lets a taxpayer other than a corporation exclude gain on the sale of qualified small business stock. The stock must be stock in a C corporation, acquired at original issue for money, property or services (IRC 1202(c)(1)); the corporation's aggregate gross assets must be within the limit at all times before the issuance and immediately after it (1202(d)(1)); and at least 80% of its assets by value must be used in an active qualified business (1202(e)(1)). Service businesses in health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services and brokerage do not qualify, and neither do banking, insurance, financing, leasing, investing, farming, hotels and restaurants (1202(e)(3)). P.L. 119-21 section 70431 rewrote the numbers for stock acquired after July 4, 2025, the “applicable date” (1202(a)(6)):

The exclusion is the strongest tax argument for a C corporation and is not available to an LLC taxed as a partnership. After a conversion, the stock deemed issued on the Form 8832 effective date is the stock being tested, so the gross assets limit, the active business test and the holding period all run from that date.

Fringe benefits: where the C corporation wins

Employer-provided accident and health coverage is excluded from an employee's income under IRC 106, and an owner who works for a C corporation is an employee for that purpose. A partner is not. Publication 15-B lists who counts as an employee for accident and health benefits and then adds the exception: do not treat a 2% shareholder of an S corporation as an employee, and treat that shareholder “as you would a partner in a partnership for fringe benefit purposes” (Publication 15-B; IRC 1372). An LLC member taxed as a partner instead deducts health insurance premiums under IRC 162(l), which lowers income tax but is not taken into account in figuring net earnings from self-employment (162(l)(4)). For an owner with a family health plan, that is a recurring difference the S corporation does not share either.

Retained earnings, and the tax on keeping too much

An LLC's owners are taxed on the year's profit whether they take it out or leave it in the bank. A C corporation pays its 21% and can keep the rest to fund growth, with the shareholder-level tax deferred until a dividend or a sale. The Code polices that deferral with the accumulated earnings tax: 20% of accumulated taxable income (IRC 531) for a corporation “formed or availed of for the purpose of avoiding the income tax with respect to its shareholders” by letting earnings accumulate instead of distributing them (IRC 532(a)). The accumulated earnings credit is never less than the amount by which $250,000 exceeds accumulated earnings and profits at the close of the prior year, or $150,000 for a corporation whose principal function is services in health, law, engineering, architecture, accounting, actuarial science, performing arts or consulting (IRC 535(c)(2)). Documented business needs are what separate an accumulation from an avoidance.

Which is better for your business: a short decision list

• Stay a default LLC when the profit is paid out to the owners each year, the owners can use the QBI deduction, early losses are expected, or an S election on Form 2553 is the likely next step for payroll tax reasons.
• Elect C corporation status when a priced equity round or an option plan is coming, most profit will be retained for years, a section 1202 exit is realistic, or owner health coverage and other employee benefits matter.
• Run the numbers with a salary in them. The illustration above has none; a reasonable salary, state tax and the owners' other income all move the gap.

The election is a two-page form; the analysis behind it is the work. Licensed tax professionals at BEG's tax partner model both structures with your CPA as part of Forward Tax Planning, and either structure can check whether its development work is earning the R&D payroll tax credit.

Sources: 26 U.S.C. 11, tax imposed on corporations (21%); 26 U.S.C. 1(h), maximum capital gains rate (qualified dividends); 26 U.S.C. 1411, net investment income tax; 26 U.S.C. 1401 and 1402, self-employment tax; 26 U.S.C. 199A, qualified business income deduction; 26 U.S.C. 1202, qualified small business stock, as amended by P.L. 119-21 section 70431; 26 U.S.C. 1361(b)(1), S corporation eligibility limits; 26 U.S.C. 531, 532 and 535, accumulated earnings tax; 26 U.S.C. 106 and 162(l), health coverage of employees and the self-employed; 26 CFR 301.7701-3, classification of certain business entities; IRS, Rev. Proc. 2025-32 (2026 rate tables, standard deduction, capital gain thresholds, QBI thresholds); IRS, Publication 15 (2026), Social Security wage base; IRS, Publication 15-B (2026), fringe benefit treatment of partners and 2% shareholders; IRS, Form 8832, Entity Classification Election (Rev. December 2013); IRS, Limited Liability Company (LLC), default classifications. Figures and rules checked against these sources on September 26, 2026. This is general information, not tax advice for your situation. Tax services are provided by licensed tax professionals under a separate engagement agreement. BEG does not provide tax advice.