Who this is for
- US business founders choosing between an LLC and a C corporation
- One or multiple owners comparing federal tax and state costs
Not covered here
- Detailed LLC or corporation return preparation
- Making an S corporation election
- Converting an existing business
- Foreign-owner or Canadian-resident tax analysis
What is the main tax difference between an LLC and a C corporation?
An LLC is a state-law entity whose federal income tax treatment depends on its owners and elections. A C corporation is a separate taxpayer: its profit can be taxed once at the company and again when paid as a dividend to an owner (IRS: LLC classification; IRS: forming a corporation).
By default, a one-owner LLC is disregarded for federal income tax; a multiple-owner LLC is a partnership. In both cases, owners generally report the business's taxable results whether or not they withdraw cash. A C corporation instead reports its own income on Form 1120. Its federal tax rate is 21% (Internal Revenue Code, section 11).
How do LLC and C corporation taxes compare side by side?
The useful comparison is who reports profit, when owners need cash, and what happens to losses. The table assumes the LLC keeps its default federal classification; an election changes its column (IRS: LLC classification).
| Question | Default LLC | C corporation |
|---|---|---|
| Who reports operating profit? | One owner reports it directly; multiple owners receive partnership shares on Schedule K-1. | The corporation files Form 1120 and pays federal income tax. |
| Does leaving cash inside defer owner income tax? | Generally no. Owners report taxable income allocated to them. | Generally yes for dividends: shareholders are taxed when a dividend is paid, while the corporation has already paid tax on its profit. |
| What happens when cash is paid out? | An ordinary draw or distribution generally is not a second tax on the same profit, although basis and other distribution rules matter. | A dividend is generally taxable to the shareholder and is not deductible by the corporation (IRS: forming a corporation; IRS: dividends). |
| Can owners use operating losses? | Possibly. Partnership-taxed owners face a partnership-interest basis limit; other loss limits may apply to either default LLC type (IRS: partner instructions; IRS: single-member LLCs). | No. A shareholder cannot deduct the corporation's operating loss; the corporation may carry a net operating loss to another year (IRS: forming a corporation; Internal Revenue Code, section 172). |
| Qualified business income deduction? | An eligible individual owner may qualify for up to 20%, subject to limits. | Corporate income and dividends do not qualify (Internal Revenue Code, section 199A; IRS: qualified business income). |
The owner's income tax rate, work in the business, payroll, state taxes, and any sale all affect the actual comparison. Working LLC owners may owe self-employment tax; corporate wages can trigger payroll taxes (IRS: LLC classification; IRS: forming a corporation). For filing details, see how LLCs are taxed and how C corporations are taxed.
When does a C corporation's double taxation cost more?
A C corporation's two tax layers are most likely to cost more when it regularly distributes profit as dividends, but the result depends on the owners' tax rates, payroll taxes, deductions and state tax. The corporation pays income tax first; the owner then reports the dividend. A default LLC generally passes profit through to its owners instead, so it has no corporate income tax layer (IRS: forming a corporation; IRS: dividends).
Keeping earnings in a C corporation can postpone the dividend layer. Retaining earnings for present or reasonably anticipated business needs does not by itself trigger the accumulated earnings tax. That tax may apply when earnings accumulate beyond those needs to avoid shareholder tax; a separate personal holding company tax can apply when the corporation meets its income and ownership tests (Internal Revenue Code, sections 532–533; section 537; section 542). A salary for work performed has different tax treatment from a dividend; see paying yourself.
Can an LLC be taxed as a C corporation?
Yes. An eligible LLC can file Form 8832 to elect corporate classification. It remains an LLC under state law but files and pays federal tax as a corporation; the election does not by itself turn membership interests into shares issued under state corporate law (IRS: Form 8832; IRS: LLC classification).
Form 8832 must be signed by all current owners or an authorized officer, manager or member; a former owner must also sign if the election is retroactive to when they owned the LLC. Its effective date can be no more than 75 days before filing or 12 months after. After a change election, another generally cannot take effect for 60 months (IRS: Form 8832 and instructions). See how LLCs are taxed for election details and changing your business structure if the LLC already holds assets.
What does the section 1202 stock-sale exclusion require?
Section 1202 can exclude qualifying gain when a noncorporate taxpayer sells or exchanges eligible stock in a domestic C corporation. It applies to a stock sale or exchange, subject to requirements throughout the holding period; it is not a general break on selling a business or its assets (Internal Revenue Code, section 1202).
| Requirement | What to check |
|---|---|
| Original stock | The owner generally acquires newly issued C corporation stock for money, property other than stock, or qualifying services. Buying another owner's shares normally does not qualify. Certain stock repurchases around issuance can disqualify it. |
| Company size | For stock issued after July 4, 2025, the issuer's aggregate gross assets must stay within $75,000,000 before and immediately after issuance; earlier-issued stock uses $50,000,000. The test counts cash and the tax basis of other property, generally using fair market value for contributed property. Predecessor and related-corporation rules can change the total. |
| Active business | During substantially all the holding period, the corporation must be a C corporation and use at least 80% of asset value in qualifying active businesses. Reasonably required working capital can count, but after two years of existence, no more than 50% of assets can qualify through that rule. |
| Business field | Health, law, accounting, consulting, banking, insurance, financing, leasing, investing, farming, hotels and restaurants are among the excluded fields. Check the full statutory list. |
| Sale and owner | The claimant must be a noncorporate taxpayer selling qualifying stock, subject to the per-issuer gain limit. |
For stock acquired after July 4, 2025, the exclusion is 50% after at least three years, 75% after at least four years, and 100% after at least five years. The per-issuer gain limit for that stock is generally the greater of $15,000,000 or ten times the owner's adjusted basis in the stock. Eligible gain taken into account under section 1202 in earlier years reduces the dollar limit; older-stock gain taken into account in the same year can also reduce the newer-stock limit. Stock acquired on or before that date keeps the older more-than-five-year holding rule and generally the $10,000,000 dollar limit or ten-times-basis alternative; the exclusion percentage for older stock depends on its acquisition date (Internal Revenue Code, section 1202).
A sale before the exclusion holding period may instead qualify for a section 1045 rollover: the seller must have held the stock more than six months, buy replacement qualifying stock within 60 days, and elect on the timely return, including extensions (IRS: Publication 550). A future sale is uncertain: the business must stay eligible, the owner must have qualifying gain from a stock sale or exchange, and state tax may still arise. California does not conform to the federal section 1202 exclusion (California FTB: federal changes). Keep incorporation documents, stock issuance records, contribution valuations, capitalization records and records showing how company assets were used.
Can an LLC, or an LLC taxed as a C corporation, qualify for section 1202?
Selling a default LLC membership interest is not a sale of C corporation stock under section 1202. A partnership-taxed LLC can, however, hold qualifying C corporation stock and pass eligible sale gain through to owners who held their LLC interests from the stock's acquisition through its sale. Each owner's eligible amount is capped by the interest held when the LLC acquired the stock (Internal Revenue Code, section 1202(g)).
A Form 8832 election does not establish that an LLC's membership interests are “stock” for section 1202. IRS Private Letter Ruling 201636003 concerned originally issued corporate stock sold after the business converted back to a corporation. It does not decide whether selling interests in an elected LLC qualifies and cannot be cited as precedent. Get transaction-specific advice before relying on the exclusion (Internal Revenue Code, section 1202(c); IRS: Form 8832).
How are early losses treated in each structure?
Early losses from a default LLC may reach the owner's return, but a loss is deductible only to the extent the owner's facts satisfy the applicable limits. A C corporation's operating losses stay with the corporation; shareholders cannot deduct them against their wages or other personal income (IRS: forming a corporation; IRS: excess business losses).
For limits on using an LLC loss against other income and on corporate loss carryovers, see business losses.
How do state taxes and annual fees differ?
State cost depends on where the business forms and operates, not just its federal classification. Formation fees, annual reports, income taxes, franchise taxes and LLC-specific fees can differ, including when a business forms in one state but operates in another (IRS: business structures).
California illustrates the difference: an LLC may owe an annual tax and income-based fee, while a corporation faces franchise tax and different first-year rules (California FTB: LLC; California FTB: corporations). See California's minimum tax and LLC fee and Delaware franchise tax for the state rules.
Where does an S corporation fit in?
An S corporation election is another federal tax path for an eligible corporation or LLC. Its income generally passes through to shareholders, but eligibility and payroll rules make it a separate choice; section 1202 requires C corporation stock during substantially all the holding period (IRS: S corporations; Internal Revenue Code, section 1202). See when an S corporation election pays off.
Example
Illustrative US dollars; assume the dividend tax stated below. This ignores state tax, payroll, loss limits and other owner taxes.
A business has $100,000 of taxable operating profit and its owner takes out $40,000. As a default one-owner LLC, the owner generally reports the $100,000 business profit for federal income tax even though only $40,000 was withdrawn. The withdrawal is ordinarily not another tax on that same profit.
If the business is instead a C corporation, it pays $21,000 of federal income tax on the $100,000, leaving $79,000. Assume it pays a $40,000 dividend and the owner's federal tax on that dividend is $6,000. Combined federal tax so far is $27,000, and $39,000 stays in the corporation. The LLC owner's tax on the $100,000 profit still depends on income tax, self-employment tax and any qualified business income deduction, so the example does not identify a universal winner.
Different for you?
- Several founders, outside funding or a planned stock sale: document who will own what, expected profit, annual cash needs, asset values and the likely sale form before issuing interests; get business formation help.
- An existing LLC with assets or past elections: changing form can itself affect tax; see changing your business structure.
- A nonresident owner: US tax and filing can change by owner residence (IRS: nonresident taxation); see forming and running a company from abroad.
- A Canadian-resident owner: Canada may classify a US LLC differently (CRA: treaty guidance); see setting up a US business as a Canadian resident.
- You hold rental property: Section 1202's active-business test excludes leasing businesses; see rental property in an LLC.
- Large early losses or an S corporation election: see business losses or S corporation status, respectively.
Figures on this page
| Figure | Value | Source |
|---|---|---|
| US federal corporate income tax rate Flat rate on taxable income of domestic corporations; foreign corporations pay the same rate on effectively connected income (Instructions for Form 1120-F, Section II). | 21% | IRS: Instructions for Form 1120 Checked |
| Maximum qualified business income deduction rate Maximum share of eligible qualified business income; taxpayer and business limits may reduce it | 20% | Internal Revenue Code: Section 199A Checked |
| QSBS issuer gross-asset limit for stock issued after July 4, 2025 Aggregate gross assets before and immediately after stock issuance; adjusted for inflation after 2026 | $75,000,000 Tax year 2026 | Internal Revenue Code: Section 1202(d) Checked |
| QSBS issuer gross-asset limit for stock issued on or before July 4, 2025 Older aggregate gross-asset limit before and immediately after issuance | $50,000,000 | IRS: Schedule D (Form 1040) instructions, qualified small business stock Checked |
| QSBS active-business asset-use requirement At least this share by value of the issuing corporation's assets must be used in active qualified businesses during substantially all of the holding period | 80% | Internal Revenue Code: Section 1202(e) Checked |
| QSBS working-capital asset cap after two years Once a corporation has existed for at least two years, no more than this share of its assets can qualify as active-business assets under the section 1202(e)(6) working-capital rule | 50% | Internal Revenue Code: Section 1202(e)(6) Checked |
| QSBS exclusion for newer stock held at least three years Stock acquired after July 4, 2025; subject to all section 1202 conditions | 50% | Internal Revenue Code: Section 1202(a) Checked |
| QSBS exclusion for newer stock held at least four years Stock acquired after July 4, 2025; subject to all section 1202 conditions | 75% | Internal Revenue Code: Section 1202(a) Checked |
| QSBS exclusion for newer stock held at least five years Stock acquired after July 4, 2025; subject to all section 1202 conditions | 100% | Internal Revenue Code: Section 1202(a) Checked |
| QSBS per-issuer dollar gain limit for newer stock For stock acquired after July 4, 2025; reduced by eligible gain taken into account under section 1202(a) in prior years and older-stock gain taken into account in the same year; compare with ten times adjusted stock basis; inflation adjustment begins after 2026 | $15,000,000 Tax year 2026 | Internal Revenue Code: Section 1202(b) Checked |
| QSBS per-issuer dollar gain limit for older stock For stock acquired on or before July 4, 2025; reduced by eligible gain taken into account under section 1202(a) in prior years; compare with ten times adjusted stock basis | $10,000,000 | Internal Revenue Code: Section 1202(b) Checked |
Primary sources
- IRS: Business structures
- IRS: Forming a corporation
- IRS: LLC filing as a corporation or partnership
- IRS: Single member LLCs
- IRS: Partner Schedule K-1 instructions
- IRS: Form 8832
- IRS: Form 8832 and instructions
- IRS: Publication 550
- IRS: Qualified business income deduction
- IRS: Schedule D instructions
- IRS: Private Letter Ruling 201636003
- Internal Revenue Code: Section 11
- Internal Revenue Code: Section 1202
- Internal Revenue Code: Section 199A
- Internal Revenue Code: Section 172
- Internal Revenue Code: Section 531
- Internal Revenue Code: Section 532
- Internal Revenue Code: Section 533
- Internal Revenue Code: Section 537
- Internal Revenue Code: Section 541
- Internal Revenue Code: Section 542
- IRS: Topic 404, dividends
- IRS: Excess business losses
- IRS: S corporations
- IRS: Taxation of nonresident aliens
- CRA: Competent authority assistance under tax conventions
- California FTB: Limited liability company
- California FTB: Corporations
- California FTB: LLC treated as a corporation
- California FTB: Summary of federal income tax changes
About this guide
Edited and reviewed by Di Lu, CPA on . It explains general rules for the tax year shown. It is not advice for your situation.
Changes
- : First published.