LLC or C Corp? How to Set Up a US Startup for Venture Funding

One of the first decisions a US startup founder makes is also one of the hardest to undo cheaply: what kind of legal entity to form. For companies that plan to raise venture capital, the conventional answer is a Delaware C corporation. For many small businesses and side projects, a limited liability company is simpler and cheaper. Picking the wrong one is fixable, but it costs legal fees and sometimes tax benefits.

This guide explains the trade-offs, why venture investors usually insist on the C corp and the setup steps that commonly trip up first-time founders. It is general information; an experienced startup attorney and accountant should review your situation.

The short answer

• Planning to raise money from venture capital funds? A Delaware C corporation is the standard choice.
• Building a profitable small business, agency or consultancy with no outside investors? An LLC is often simpler and can be more tax-efficient.
• Not sure yet? Some founders start as an LLC and convert later, but if a priced round is a realistic near-term goal, starting as a C corp avoids a conversion.

How the two structures differ

Why venture investors prefer C corps

The preference is practical rather than ideological.

• Fund structure. Many venture funds have tax-exempt or foreign investors, such as university endowments and pension funds. Investing in a pass-through LLC can create tax complications for those investors, so many funds are restricted from doing it.
• Preferred stock. Venture deals typically use preferred shares with liquidation preferences, conversion rights and protective provisions. Corporations can issue different share classes in a standardized way.
• Standard documents. Seed and Series A documents, as well as convertible instruments, are designed around corporations. Our explainer on SAFEs and convertible notes shows how those instruments convert into stock.
• Employee equity. Incentive stock options, the type that can receive favorable tax treatment for employees, can only be granted by corporations. For startups that will compete for talent with equity, that matters. See our guide to startup stock options for how employees evaluate them.
• Qualified small business stock. Section 1202 of the tax code can exclude some or all of the gain on qualifying C corporation stock held long enough. LLC interests do not qualify. The rules, including holding periods and caps, have been amended over the years, so check the current IRS guidance rather than relying on older summaries.

Why Delaware?

Delaware is the most common state of incorporation for venture-backed startups. Reasons usually cited include a well-developed body of corporate case law, the Court of Chancery that specializes in business disputes, and a state corporations office that processes filings efficiently. Investors and lawyers across the country are familiar with it, which reduces friction in financings and acquisitions.

Incorporating in Delaware does not remove obligations at home. If the company operates in another state, such as having employees or an office there, it generally must register as a foreign corporation in that state and comply with its taxes and filings.

When an LLC makes sense

An LLC is often a better fit when:

• The business is expected to distribute profits to its owners rather than reinvest everything for growth.
• The owners want early losses to flow through to their personal tax returns.
• There are no plans to raise money from institutional venture funds.
• The founders want minimal formalities and lower administrative cost.

An LLC can also elect to be taxed as a corporation, and many states allow converting an LLC into a corporation later. Conversion is common before a first priced round, but it involves legal work and may affect when certain tax clocks start.

Setup steps founders commonly get wrong

1. Founder vesting

Investors usually expect founders' shares to vest over time, commonly four years with a one-year cliff, even when the founders already own them. Vesting protects the company and the remaining founders if someone leaves early. Putting vesting in place at formation is easier than negotiating it in the middle of a funding round.

2. The 83(b) election

When founders receive stock that is subject to vesting, they can file an 83(b) election with the IRS within 30 days of receiving the shares. The election lets them be taxed on the stock's value at the time of grant, which is usually very low at formation, rather than as each tranche vests. Missing the 30-day window is one of the most expensive mistakes in early-stage startups. Keep proof of filing, and check the IRS website for the current filing method.

3. Assigning intellectual property

Code, designs and domain names created before incorporation should be assigned to the company in writing. Investors will check during due diligence, and gaps can delay or derail a round.

4. Delaware franchise tax and annual report

Delaware corporations file an annual report and pay franchise tax. Delaware offers more than one method of calculating the tax, and the default calculation can produce a surprisingly large bill for startups that have authorized millions of shares. The alternative method, based on assets and issued shares, is often much lower. The state publishes the current rates and due dates on its Division of Corporations website.

5. Clean cap table and records

Keep board consents, stock purchase agreements and a ledger of who owns what from day one. A messy capitalization table is a frequent cause of delays when founders start raising money.

Costs to expect

Exact fees change and depend on the state and the advisors involved, but founders should budget for:

• State filing fees for formation and annual reports.
• Delaware franchise tax and a registered agent.
• Foreign qualification fees in the home state.
• Legal fees for formation documents, founder stock purchases and an equity plan.
• Accounting for corporate tax returns.

Formation services and online platforms can handle the paperwork at lower cost, but founders planning a venture round often still have a startup lawyer review the documents.

The right structure follows the business plan. If outside venture capital is the path, a Delaware C corporation with founder vesting, timely 83(b) elections and clean records sets the company up for its first round. If the goal is a profitable, owner-run company, an LLC may be the simpler and cheaper start.