This article reflects federal rules and Delaware rules as of June 2026 and covers tax year 2025 and the 2026 filing season. Tax law changes — confirm current figures before you file or form your entity.
Quick Answer
It depends on your goal. For tax year 2025, an LLC is better for a bootstrapped, profit-now startup because of pass-through taxation and the permanent 20% QBI deduction. A C-Corp is better if you plan to raise venture money and chase a tax-free exit under Section 1202 (QSBS).
For most founders, the choice comes down to one question: are you keeping the profit, or are you building something you hope to sell or take public? A bootstrapped consultant who pockets earnings each year and a venture-backed software founder aiming for a $50 million exit need opposite structures, and picking the wrong one can cost tens of thousands of dollars or kill a funding round before it starts.
The stakes are real and the timing matters. The QSBS rules under Section 1202 were upgraded for stock issued after July 4, 2025, raising the tax-free gain cap to $15 million and adding a faster 3-year exclusion path — a change that makes the C-Corp far more attractive for founders eyeing an exit. Meanwhile, the 20% QBI deduction was made permanent by the One Big Beautiful Bill Act, locking in a major tax break for LLC owners.
Here is what you will learn:
- 💡 The single question that settles the LLC-vs-C-Corp choice for most founders.
- 💰 How the 21% corporate rate, double taxation, and the 20% QBI deduction actually compare with worked dollar math.
- 🚀 Why venture investors almost always demand a Delaware C-Corp — and the QSBS exit break that makes it worth it.
- ⚠️ The 7 entity-choice mistakes that cost founders the most money and the most equity.
- 🧭 A step-by-step plan for forming, converting, and electing your tax status with the right IRS forms and deadlines.
What “LLC” and “C-Corp” Actually Mean
These two terms get mixed up because they describe two different things. An LLC (limited liability company) and a corporation are legal structures you form with a state. A “C-Corp” describes how a corporation is taxed under the federal tax code. So you are really comparing a default pass-through entity against a separately taxed entity.
A limited liability company is a flexible business structure that shields your personal assets from business debts and lawsuits. By default, a single-member LLC is taxed like a sole proprietorship, and a multi-member LLC is taxed like a partnership. The business itself pays no federal income tax — profit and loss “pass through” to the owners’ personal returns. This default treatment is why most small, profit-now businesses start as LLCs.
A C corporation is a corporation taxed under Subchapter C of the tax code. The company is a separate taxpayer that files its own return and pays a flat 21% federal corporate tax on its profits. When it later pays profits out to shareholders as dividends, those owners pay tax again on their personal returns. That second layer is the famous “double taxation,” and it is the main reason small businesses avoid the C-Corp — yet it is also the structure every venture capitalist expects to see.
The consequence of confusing the two is expensive. A founder who tells a lawyer “set up a C-Corp” sometimes ends up with an LLC that has elected corporate taxation, which is not the same as a stock-issuing corporation investors can fund. To do something about this, decide the legal form (LLC or corporation) and the tax election (default, S, or C) as two separate steps, and confirm both in writing with your formation documents.
The Core Difference: How Each One Is Taxed
The tax engine is where these entities split apart. One is taxed once at your personal rate; the other is taxed at the company level and again when money reaches you. Everything else flows from this.
Pass-Through Taxation (the LLC default)
With a default LLC, the business pays no federal income tax of its own. All net profit passes to your personal Form 1040, where you pay ordinary income tax plus 15.3% self-employment tax on your share of active earnings. The upside is no double layer, plus access to the permanent 20% QBI deduction that lets eligible owners deduct up to 20% of qualified business income.
The consequence of pass-through status is that you owe tax on profit whether or not you take the cash out. If your LLC earns $200,000 but you reinvest $150,000, you are still taxed on the full $200,000. A common misconception is that an LLC “saves taxes” automatically — it does not; it simply moves the tax to your personal return. What you should do is set aside roughly 30–40% of profit for quarterly estimated taxes, due April 15, June 15, September 15, and January 15.
Corporate (C-Corp) Taxation
A C-Corp pays its own 21% federal tax on profit, then shareholders pay again on any dividends, typically at 15% or 20% long-term capital gains rates plus the 3.8% net investment income tax for high earners. This is the double layer. The trade-off is that retained profit left inside the company is taxed only once at 21%, which can beat a high personal rate for businesses that reinvest heavily.
The consequence of ignoring double taxation is paying tax twice on the same dollar when you distribute it. A misconception is that the 21% rate makes C-Corps “cheaper” — it only helps if you keep money in the company or aim for a QSBS exit, not if you pull profit out yearly. The fix: if you run a C-Corp and want cash out, pay yourself a reasonable salary (deductible to the company) rather than dividends, and document it as payroll.
Which Situation Applies to You?
The right answer depends on your plan, not on a generic ranking. Use the branch below that fits you, then read the matching section.
- You are bootstrapping and will take profit out each year: lean LLC, and consider an S-Corp election once profit is high. Read the LLC pros section.
- You plan to raise venture capital or angel money within 1–2 years: choose a Delaware C-Corp now. Read the C-Corp and QSBS sections.
- You want a big tax-free exit (acquisition or IPO): C-Corp, to qualify for Section 1202. Read the QSBS section.
- You are a solo founder with steady five-figure profit and no investor plans: LLC, default or S-Corp taxation. Read the worked examples.
- You are a non-U.S. founder (for example, based in Vilnius) selling to U.S. customers or raising U.S. money: usually a Delaware C-Corp, because a U.S. LLC’s pass-through income can create messy U.S. filing for non-residents. Read the non-resident note.
The Venture Capital Angle: Why Investors Demand a C-Corp
If you intend to raise money from venture funds, the choice is largely made for you. Nearly every institutional investor requires a Delaware C-Corp, and there are concrete tax and legal reasons behind that rule.
Venture funds need to issue stock, including preferred shares with special rights, and only a corporation issues stock. An LLC issues “membership interests,” which most funds cannot hold cleanly. Many VC funds also have tax-exempt and foreign partners who would receive unrelated business taxable income or be forced to file U.S. returns if they invested through a pass-through LLC. The consequence of forming as an LLC anyway is a forced, costly conversion to a C-Corp right before a round, sometimes triggering tax and always burning legal fees and time.
Delaware is the default home because its corporate law is predictable, its Court of Chancery specializes in business disputes, and investors already know its rules. A misconception is that you must operate in Delaware — you do not; you incorporate there and register as a “foreign” entity in the state where you actually work. What you should do if a raise is on the horizon: form the Delaware C-Corp from day one to start the QSBS clock and avoid a panicked conversion later.
The Big 2025 Reason to Pick a C-Corp: QSBS (Section 1202)
Qualified Small Business Stock is the single biggest tax reason a startup founder picks a C-Corp, and the rules just got much stronger. Section 1202 lets you exclude a large share of your gain from federal tax when you sell stock in a qualifying C-Corp.
The New Tiered Exclusion
For QSBS issued after July 4, 2025, the exclusion is now tiered by holding period: hold 3 years for a 50% exclusion, 4 years for 75%, and 5 years or more for a full 100% exclusion. Before this change, you got nothing under five years. This is a major win for founders who exit early.
The consequence of selling too soon is losing the break entirely — sell at 2 years and 11 months and you pay full capital gains tax. Note the nuance: gain excluded at the 3-year and 4-year tiers is taxed at a 28% rate on the non-excluded portion, not the usual 20%. What to do: track your stock issuance date precisely, because the QSBS clock starts the day shares are issued, not the day you formed.
The Higher Caps
The OBBBA raised the per-issuer exclusion cap from $10 million to $15 million (or 10 times your basis, whichever is greater), and lifted the company’s gross-asset ceiling from $50 million to $75 million. Both are indexed for inflation starting in 2027. The asset limit matters because the company must have had $75 million or less in gross assets when the stock was issued.
The consequence of missing the asset window is permanent: stock issued after the company crosses $75 million in assets is not QSBS. A misconception is that QSBS covers any startup stock — it does not cover S-Corps, LLCs, or most service businesses like law or consulting firms. What to do: confirm your C-Corp status, your active-business test, and your issuance timing with a tax attorney before you rely on this break.
Worked Examples: The Math, Side by Side
Numbers settle arguments. Below are three fully worked examples using 2025 figures so you can copy the math for your own situation.
Example 1 — Profit-now LLC owner (Maya, solo marketing consultant). Maya’s single-member LLC earns $120,000 net profit in 2025 and she takes it all out. As a pass-through, she pays roughly 15.3% self-employment tax on net earnings (about $16,955 after the deductible-half adjustment) plus federal income tax. With the 20% QBI deduction, she deducts about $24,000, lowering taxable income. Her combined federal bill lands near $34,000, and there is no second corporate layer.
Example 2 — Same profit as a C-Corp (Maya converts). If Maya’s C-Corp earns $120,000 and pays it all to her as a dividend, the company first pays 21% = $25,200. The remaining $94,800 dividend is taxed to Maya at 15% = $14,220. Her total is about $39,420 — higher than the LLC, because she pulled all profit out and got double-taxed. For a profit-now owner who distributes everything, the LLC wins.
Example 3 — Venture founder with an exit (Devon, SaaS startup). Devon forms a Delaware C-Corp in 2026, holds founder stock 5 years, and sells for a $12 million gain. Because the stock is QSBS issued after July 4, 2025, and the gain is under the $15 million cap, he excludes 100% — paying $0 federal tax on the entire $12 million. As an LLC, that same gain could have cost him roughly $2.4 million in federal capital gains tax. Here the C-Corp wins by millions.
Three Common Scenarios
Each table below shows a typical founder situation and the likely outcome of each entity choice.
Scenario A: Bootstrapped agency, $150K profit taken out yearly
| Entity Choice You Make | What It Costs or Saves You |
|---|---|
| LLC (default or S-Corp election) | Single layer of tax, 20% QBI deduction, lower total bill; best fit |
| C-Corp distributing all profit | Double taxation on dividends raises your total tax; poor fit |
Scenario B: Pre-seed startup planning a $2M raise next year
| Entity Choice You Make | What It Costs or Saves You |
|---|---|
| Delaware C-Corp now | Investor-ready, QSBS clock starts early, no rushed conversion |
| LLC now, convert later | Conversion legal fees, possible tax, lost QSBS time; risky |
Scenario C: Solo founder unsure about an exit, $90K profit
| Entity Choice You Make | What It Costs or Saves You |
|---|---|
| LLC, default taxation | Simple, cheap, flexible; convert to C-Corp later if you raise |
| C-Corp from day one | Extra filings and franchise tax with no current benefit; premature |
A Non-Resident Founder Note
Founders living outside the U.S. — for example in Vilnius — face an extra wrinkle. A U.S. LLC’s pass-through income can pull a non-resident owner into U.S. tax filing and withholding, which is administratively painful. A C-Corp, by contrast, contains the tax inside the company and gives non-resident founders a cleaner, single-entity filing posture, which is one reason most U.S.-raising international startups choose a Delaware C-Corp. This is educational only; cross-border structuring is complex, so confirm your specific facts with a U.S. tax attorney and an advisor in your home country.
Costs, Deadlines, and Timing
Both entities carry formation and upkeep costs you should budget before you choose. Forming either one DIY runs roughly $50–$500 in state fees; using a lawyer for a venture-ready Delaware C-Corp typically runs $1,500–$5,000.
A Delaware C-Corp owes an annual franchise tax due March 1, starting at $175 under the authorized-shares method and ranging up to $200,000 for large companies, plus a report fee. A Delaware LLC owes a flat $300 annual tax due June 1, with no report required. Missing these deadlines triggers a $200 penalty plus interest and loss of good standing, which can block a financing or sale.
C-Corps file Form 1120 by the 15th day of the 4th month after year-end (April 15 for calendar-year filers). Multi-member LLCs file Form 1065 by March 15. Missing a 1065 deadline triggers a per-partner, per-month late penalty that adds up fast, so calendar these dates the day you form.
The Forms and the Process
Choosing your entity is step one; electing your tax status is step two. Here is the path and the paperwork.
To form, you file a Certificate of Formation (LLC) or Certificate of Incorporation (corporation) with the state, then get a free EIN from the IRS online. An LLC keeps its default pass-through taxation unless you elect otherwise. To have an LLC taxed as a C-Corp, you file Form 8832; to elect S-Corp status, you file Form 2553 within roughly 2 months and 15 days of the start of the tax year you want it to apply.
A corporation is a C-Corp by default and files its corporate return on Form 1120. The consequence of missing the Form 2553 deadline is paying self-employment tax you could have avoided for a whole year, though the IRS allows late-election relief if you have reasonable cause. What to do next: pick the legal form, file with the state, get the EIN, then file the tax election promptly so it applies to the current year. For a deeper walkthrough, see our guides on how to fill out Form 2553, how to complete Form 8832, and how to file Form 1120.
LLC vs. C-Corp at a Glance
| Feature | LLC (default) | C-Corp |
|---|---|---|
| Federal taxation | Pass-through to owners | 21% corporate, then dividend tax |
| Double taxation | No | Yes, on distributed profit |
| 20% QBI deduction | Available, now permanent | Not available |
| QSBS / Section 1202 exit break | No | Yes, up to 100% exclusion |
| Venture-capital ready | Rarely | Yes, the standard |
| Issues stock and options | No (membership interests) | Yes |
| Admin burden | Lower | Higher (board, minutes, payroll) |
| Best for | Bootstrapped, profit-now owners | Fundraising, high-growth, exit-focused |
Pros and Cons
LLC Pros – Single layer of tax, so distributed profit is taxed only once — keeps more cash in your pocket. – Access to the 20% QBI deduction, which directly cuts taxable income for eligible owners. – Flexible management with no required board or minutes, saving time and legal cost. – Easy to start and cheap to maintain, ideal for early, uncertain ventures. – Can later elect S-Corp or C-Corp taxation, so you keep your options open.
LLC Cons – Owners pay 15.3% self-employment tax on active profit, which can exceed corporate payroll taxes. – Cannot issue stock, so venture investors and option pools do not fit. – No QSBS, so you lose the biggest startup exit break. – Profit is taxed even if you reinvest it, hurting cash flow in growth years. – Conversion to a C-Corp later costs time, fees, and possibly tax.
C-Corp Pros – Investor-ready structure that VCs and angels expect, smoothing fundraising. – QSBS can exclude up to $15 million of gain per founder, a life-changing exit break. – Flat 21% rate rewards companies that retain and reinvest profit. – Issues stock and option pools, the standard tools for hiring and equity. – Cleaner filing for non-resident and institutional owners.
C-Corp Cons – Double taxation on dividends raises the bill for owners who pull profit out. – More paperwork: board, bylaws, minutes, and payroll compliance. – Higher formation and franchise-tax costs, especially in Delaware. – No QBI deduction, unlike pass-through owners. – Losses stay trapped in the company and cannot offset your personal income.
Do’s and Don’ts
Do – Do start as a Delaware C-Corp if a venture raise is likely within two years, because converting later is costly. – Do stay an LLC if you bootstrap and take profit out, because pass-through plus QBI usually wins. – Do file Form 2553 on time if you want S-Corp savings, because the window is short. – Do calendar your franchise-tax and return deadlines, because penalties and lost good standing block deals. – Do document founder stock issuance dates, because the QSBS clock depends on them.
Don’ts – Don’t form a C-Corp just to chase the 21% rate if you distribute all profit, because double taxation erases the benefit. – Don’t assume your state follows federal rules, because conformity varies and many states tax differently. – Don’t issue LLC interests to investors who require stock, because the deal will stall. – Don’t ignore self-employment tax in your LLC projections, because it is a large, often-forgotten cost. – Don’t rely on QSBS without confirming eligibility, because service businesses and S-Corps do not qualify.
A Note on State Conformity
Federal rules are only half the picture. Your home state may tax things differently, and that can flip the math.
Many states do not fully follow the federal QSBS exclusion, so a gain that is tax-free federally may still be taxed by your state — California, for example, does not conform to Section 1202. High-tax states like California and New York also impose entity-level taxes and fees that raise the cost of either structure, while no-income-tax states like Texas and Florida lighten the personal-tax side of an LLC. The consequence of assuming conformity is an unexpected state bill on an “exempt” gain. What to do: check your specific state agency’s rules, or have a CPA model both federal and state outcomes before you commit.
Mistakes to Avoid
- Forming an LLC right before a venture round — forces a rushed, expensive conversion and can trigger tax.
- Choosing a C-Corp while distributing all profit yearly — you pay the double-tax penalty for no reason.
- Missing the Form 2553 S-election deadline — you lose a year of self-employment-tax savings.
- Forgetting Delaware’s March 1 franchise-tax deadline — a $200 penalty plus interest and lost good standing.
- Assuming your state honors the federal QSBS exclusion — you may owe state tax on a “tax-free” exit.
- Selling QSBS before the 3-year mark — you lose the entire exclusion and pay full capital gains tax.
- Treating “C-Corp” and “incorporate in Delaware” as the same as a tax-saving move — without QSBS or reinvestment, it often costs more, not less.
What to Do Next
Follow these steps in order to lock in the right structure.
- Decide your goal: profit-now income versus fundraising and exit. This single answer drives everything.
- Pick the legal form — LLC for simplicity, Delaware C-Corp if you will raise.
- File the formation document with the state and apply for a free EIN with the IRS.
- File your tax election: Form 2553 for S-Corp savings or Form 8832 for C-Corp treatment, on time.
- Calendar your deadlines — franchise tax, estimated taxes, and your 1120, 1065, or 1040 due dates.
- Call a startup tax attorney or CPA before any raise or planned exit, since QSBS eligibility and state conformity are where founders lose the most money. This article is educational and not a substitute for advice on your specific situation.
FAQs
Is an LLC or C-Corp better for a startup? It depends. For 2025, an LLC suits bootstrapped, profit-now founders thanks to pass-through tax and the 20% QBI deduction. A C-Corp suits founders raising venture capital or targeting a tax-free QSBS exit.
Do venture capitalists require a C-Corp? Yes. Nearly all institutional investors require a Delaware C-Corp because they need stock, not LLC membership interests, and many funds have tax-exempt or foreign partners who cannot invest cleanly through a pass-through.
What is QSBS and why does it favor C-Corps? Qualified Small Business Stock. Section 1202 lets founders exclude up to $15 million of gain (for stock issued after July 4, 2025) when they sell qualifying C-Corp stock. LLCs and S-Corps do not qualify.
How long must I hold stock for the QSBS exclusion? Three to five years. For post-July-4-2025 stock, holding 3 years gives a 50% exclusion, 4 years gives 75%, and 5 years gives a full 100% federal exclusion.
Is a C-Corp double-taxed? Yes. The company pays 21% on profit, and shareholders pay again on dividends. You can reduce the second layer by paying a reasonable, deductible salary instead of dividends.
Can an LLC be taxed as a C-Corp? Yes. An LLC files Form 8832 to be taxed as a corporation. This keeps the LLC legal shell while applying corporate tax rules, but it does not let the LLC issue stock to investors.
What is the 20% QBI deduction? A pass-through break. Eligible LLC and S-Corp owners can deduct up to 20% of qualified business income. The One Big Beautiful Bill Act made it permanent, and C-Corps cannot use it.
How much does a Delaware C-Corp cost each year? At least $175. Delaware’s franchise tax starts at $175 under the authorized-shares method and can reach $200,000 for large firms, plus a report fee, due March 1 each year.
Should a non-U.S. founder choose an LLC or C-Corp? Usually a C-Corp. A U.S. LLC’s pass-through income can force non-resident owners into U.S. filing and withholding, while a Delaware C-Corp contains the tax inside the company for a cleaner structure.
Can I switch from an LLC to a C-Corp later? Yes. You can convert, but it costs legal fees, may trigger tax, and restarts your QSBS holding clock. If a raise is likely soon, forming a C-Corp early is usually cheaper.
Does my state follow the federal QSBS exclusion? Not always. Conformity varies, and some states like California do not follow Section 1202, so a gain that is federally tax-free may still be taxed by your state.
What forms does each entity file? 1040, 1065, or 1120. A single-member LLC reports on Schedule C of Form 1040, a multi-member LLC files Form 1065, and a C-Corp files Form 1120, each with its own deadline.
Word count: approximately 3,500 words.
Related reading
- S-Corp vs C-Corp – Which is Better for You? (w/ 27 Examples) + FAQs
- Schedule-C vs S-Corp (w/ 17 Examples) + FAQs
- How Do You Form a C-Corp Without Triggering Tax? (w/Examples) + FAQs
- How Much Tax Does a C-Corp Pay on Its Profits? (w/Examples) + FAQs
- Should You Choose an LLC, S-Corp, or C-Corp? (w/Examples) + FAQs
- Why Do VC-Backed Startups Choose a C-Corp? (w/Examples) + FAQs