Tech Startup: LLC or Corporation? A Stage-by-Stage Decision Framework

If you expect to raise venture capital, form a Delaware C-corporation at the idea stage; if you are building a side project or services business you will fund yourself, an LLC is simpler. At this stage you are building a prototype on your own money or a small friends-and-family check, so the decision depends almost entirely on your fundraising intentions.

If you intend to raise venture capital within the next 12 to 24 months, form a Delaware C-Corporation now. Delaware's state filing fee for a certificate of incorporation starts at $109 (fee schedule revised August 1, 2026); add a registered agent and, usually, a lawyer or formation service. The benefits of starting as a C-Corp include an immediate QSBS clock (for stock issued after July 4, 2025, IRC Section 1202 allows a 50% exclusion after three years, 75% after four and 100% after five, all measured from issuance), compatibility with standard accelerator and VC investment documents, ability to issue stock options from day one using an equity incentive plan, and avoidance of conversion costs later.

If you are exploring an idea as a side project, plan to bootstrap indefinitely, or are building a consulting or services business, an LLC is simpler and cheaper to form. Single-member LLCs are disregarded entities for tax purposes, meaning you report business income on Schedule C of your personal tax return with no separate entity-level filing. Multi-member LLCs file Form 1065 as partnerships. State formation fees vary widely; a Delaware LLC costs $110 to form and $400 a year in LLC tax.

The worst outcome is choosing an LLC, spending 12 months building, then needing to convert to a C-Corp for a seed round. The conversion is doable, but it adds legal and tax fees and weeks of paperwork at the moment you should be closing your round, and the QSBS holding period only starts when the corporation issues stock.

If you are raising a seed round from angel investors or institutional VCs, you almost certainly need a C-Corp. Most seed-stage investment documents (SAFEs, convertible notes, priced preferred stock) are designed for C-Corps and do not have LLC equivalents.

Y Combinator's standard SAFE (Simple Agreement for Future Equity) is drafted for Delaware C-Corporations, and most accelerators, angel groups and seed funds invest through instruments that assume a corporation.

At the seed stage, the C-Corp structure also enables you to set up a formal equity incentive plan (stock option pool). The pool is sized in negotiation with investors and is used to attract early employees with equity compensation. Incentive Stock Options (ISOs) under IRC Section 422 can be granted only by corporations, so an LLC cannot offer them. ISO holders receive favorable tax treatment: no tax at exercise (for regular tax purposes, though AMT may apply) and long-term capital gains treatment on the full gain if they hold the shares for at least two years from grant and one year from exercise.

LLCs can issue profits interests, which have some similarities to stock options, but they are more complex to structure, less understood by employees, and do not offer the same tax advantages as ISOs. Startup employees expect stock options, and profits interests take a lot of explaining in a recruiting conversation.

If you formed an LLC at the idea stage and are now raising a seed round, convert to a C-Corp before signing your term sheet. Work with a lawyer and tax advisor to ensure the conversion is tax-efficient and properly documented.

By Series A, the entity decision should already be made: you should be a C-Corporation. If you are still operating as an LLC and raising a Series A from institutional VCs, the conversion to C-Corp will be a condition of the investment and must be completed before closing.

At this stage the questions shift from entity choice to structure:

State of incorporation: Delaware is the standard for VC-backed companies, and you should be incorporated there unless you have a specific reason not to be. Delaware corporate law (the Delaware General Corporation Law) is the most developed and predictable body of corporate law in the United States. The Court of Chancery provides specialized judicial expertise in corporate disputes. Virtually all VC investment documents assume Delaware law.

Holding company structures: Some companies benefit from a parent-subsidiary structure where a Delaware C-Corp holds operating subsidiaries in specific states or countries. This can provide liability isolation, state tax planning opportunities, and operational flexibility. However, it adds complexity and should only be implemented with clear objectives.

International expansion: If you are hiring employees or establishing operations outside the United States, you will need foreign subsidiaries. The interaction between U.S. rules for controlled foreign corporations (Subpart F and the GILTI regime, which OBBBA revised for tax years beginning after 2025, plus the Section 250 deduction) and foreign tax regimes needs planning before you hire abroad. The entity structure decisions made at this stage have long-term implications for your global effective tax rate.

R&D location: Under new Section 174A, added by the One Big Beautiful Bill Act, domestic research and experimental expenditures in tax years beginning after December 31, 2024 can be deducted immediately (or amortized over at least 60 months by election). Foreign research costs stay under Section 174 with 15-year amortization. Only U.S. research qualifies for the Section 41 credit. If you have engineering teams in several countries, where the work happens now affects both your deduction timing and your credit.

For tech startups that are profitable, bootstrapped, and not planning to raise venture capital, the S-Corporation election deserves serious consideration. An S-Corp provides pass-through taxation (avoiding double taxation) while also offering a payroll tax advantage that LLCs taxed as partnerships do not.

The payroll tax advantage works as follows. In an LLC taxed as a partnership, an active owner's share of net income is generally subject to self-employment tax: 15.3% up to the Social Security wage base ($184,500 for 2026) and 2.9% above it, plus the 0.9% Additional Medicare Tax on earnings above $200,000 ($250,000 for joint filers). In an S-Corp, the owner pays payroll tax only on "reasonable compensation" (their salary), and the remaining profit is distributed and is not subject to self-employment or payroll tax.

For example, take a single-owner company with $300,000 of net income in 2026. As an LLC, self-employment tax applies to 92.35% of it ($277,050): 12.4% on the first $184,500 ($22,878) plus 2.9% on $277,050 ($8,034), about $30,900. As an S-Corp paying a $150,000 salary, payroll tax is 15.3% of $150,000, or $22,950. The simplified saving is about $8,000 a year, before payroll service costs, state unemployment tax and the deductibility of the employer's share. The IRS requires that the salary be "reasonable" for the services performed, and paying an unreasonably low salary to minimize payroll taxes is a red flag for audit.

S-Corps have restrictions that limit their use for venture-backed companies: no more than 100 shareholders, only one class of stock (no preferred stock), no nonresident alien shareholders, and no corporate or partnership shareholders. These restrictions are incompatible with VC investment. For bootstrapped companies with one or a few US founders, the S-Corp is often the better structure.

An LLC can elect S-Corp tax treatment by filing Form 2553 without changing its legal structure. This gives you the legal flexibility of an LLC with the tax treatment of an S-Corp. The election must be filed no more than two months and 15 days after the beginning of the tax year it should cover.

These are the entity mistakes we see most often.

Mistake 1: Forming an LLC "because it is simpler" when you plan to raise capital within 12 months. The LLC is indeed simpler to form, but the conversion cost and delay when fundraising begins eliminates any initial savings. If VC funding is on your roadmap, start with a C-Corp.

Mistake 2: Forming a C-Corp when you have no plans to raise capital and will be profitable quickly. A profitable C-Corp with no investors traps cash at the corporate level. Distributing that cash to the founder triggers double taxation. If you are building a profitable lifestyle business or consulting firm, the LLC or S-Corp is almost always better.

Mistake 3: Incorporating in Delaware when you have no out-of-state investors or plans to raise capital. For a local business operating in one state with no VC ambitions, Delaware incorporation adds unnecessary cost (Delaware franchise taxes, registered agent fees) and no meaningful benefit. Incorporate in your home state instead.

Mistake 4: Failing to issue founder stock at formation. Issue equity to all founders at formation. If founder stock is subject to vesting, each founder should file an 83(b) election with the IRS within 30 days of the grant. The 83(b) election ensures that the founder is taxed on the value of the stock at the time of issuance (typically near zero for a newly formed company) rather than as it vests over time. The 30-day deadline has no extension, and missing it can create large tax bills as shares vest at higher values.

Mistake 5: Choosing the entity without modeling it. The entity decision affects every tax filing, equity grant, distribution and exit for the life of the company, and an hour with a tax advisor before you file is cheap next to a conversion later.

If you want us to look at your facts, reach out through our contact page; we will walk through your business model, funding plans and personal tax situation before you form anything. This is general information, not tax advice for your specific facts.