Do US investors require a Delaware C corp before they invest?

Do US investors require a Delaware C corp? Not by law, but in practice most institutional venture investors expect a US C corporation, and Delaware is the usual home. The reasons are practical: some funds cannot invest in LLCs, standard US financing documents assume a corporation, and stock-based equity for employees works most cleanly in one. This article explains why, how SAFEs and 83(b) elections fit in, what changed for QSBS in 2025, and what to tidy up before you raise.

Why investors prefer a C corporation

The clearest statement comes from Stripe's Atlas documentation on company types. It describes C corporations as preferred by institutional investors who might be unable to invest in LLCs, and as the structure used to grant equity to employees, advisors and investors. LLCs pass profits and losses through to their owners, which creates tax filings many funds and their own investors do not want.

Gust, which sells Delaware incorporation, describes the Delaware C corporation as an approach preferred by founders and investors alike. Treat that as a vendor's view, but it reflects what you will hear in most US fundraising conversations.

Our Delaware C corp vs LLC comparison covers the tax side for non-US founders in more depth, and our overview of the benefits of incorporating in the US puts investor readiness alongside the other reasons to set up a US company.

Why Delaware specifically

Delaware's Division of Corporations states that more than 66% of the Fortune 500 have chosen Delaware as their legal home, and describes its Court of Chancery as a business court more than 225 years old. Investors and their lawyers know Delaware corporate law, and US financing templates are drafted around it. That familiarity reduces negotiation time and legal cost on both sides.

It is worth being precise about what accelerators require. Y Combinator's FAQ says, as of October 2026, that companies incorporated outside the US, Canada, Singapore or the Cayman Islands will need to create a parent company in one of those jurisdictions, with the existing company becoming a subsidiary. The FAQ does not name Delaware specifically. Check each investor's own requirements rather than assuming one rule fits all.

Flip or subsidiary

An established European company often already has investors, employees and contracts in its home entity. You have two broad options. You can open a US subsidiary owned by your existing company, or restructure so a new Delaware corporation becomes the parent, often called a flip. A US subsidiary works well for selling in the US. A flip is usually what US venture investors want if they are investing in the whole group.

The choice affects tax, existing shareholder rights and employee equity in your home country, so it is a legal project, not a form to fill in. Our guide to a US subsidiary vs Delaware flip sets out when each fits.

The structure question usually sits inside a bigger board decision about the US. Greatweek's Board Advisory work gives boards and leadership teams a commercial operator's perspective on expansion proposals: what the buyer evidence supports, what the forecast assumes and where execution may break down. The lawyers then handle the restructuring itself.

SAFEs and early rounds

Many early US rounds use a SAFE, a simple agreement for future equity that converts into shares at a later priced round. Stripe Atlas includes Y Combinator's post-money SAFE templates. Clerky lists SAFEs at $9 each as an add-on (as of October 2026). The templates are standard. The terms you agree, such as valuation caps and discounts, are not. Have a US corporate lawyer review them, and model what conversion does to your cap table before you sign several.

The 83(b) election

When founders receive stock that vests over time, an 83(b) election lets them be taxed on the value at grant rather than as it vests. The deadline is strict.

IRS Publication 525 (2025) says the statement must be filed no later than 30 days after the date the property was transferred. Put it on the calendar the day shares are issued.

You can use a written statement or Form 15620 (Rev. April 2025).

The IRS lists Form 15620 among forms that can be submitted online, which requires an IRS Online Account. Whether a non-US founder without an SSN or ITIN can create one is not clear from the IRS pages, so plan on paper filing unless you confirm otherwise. Stripe's guidance is that non-US founders who will never be US taxpayers do not need an 83(b), while those who file or may file US returns should consider it. Atlas files 83(b) elections for all its C corporation founders.

QSBS after July 4, 2025

Qualified small business stock under Section 1202 can exclude gain on sale for US taxpayers. The One Big Beautiful Bill Act, enacted July 4, 2025, changed the rules for stock acquired after that date. The issuer must be a domestic C corporation. Stock held at least three years qualifies for a 50% exclusion, rising to 75% at four years and 100% at five years or more. The per-issuer cap is $15,000,000 for newly acquired stock, indexed for inflation for taxable years beginning after 2026, or 10 times the aggregate adjusted basis if greater. The gross assets test rose to $75,000,000 for stock issued after July 4, 2025. Stock acquired on or before that date stays under the earlier rules. These points come from the text of 26 U.S.C. §1202 as amended.

For non-US founders, the benefit depends on their own tax residence. QSBS can still matter to your US investors, which is one more reason they expect a C corporation.

What to fix before fundraising

Investors will review your structure, so clean it up first:

• Confirm the entity is a C corporation and in good standing, with Delaware franchise tax paid.
• Check that founder shares were properly issued and that any 83(b) elections were filed on time, with proof kept.
• Make sure intellectual property is assigned to the company, not left with founders or a home entity.
• Reconcile your cap table, including every SAFE.
• Confirm US tax filings are up to date.

Gust, for example, includes IP assignment in its Accelerate plan, listed at $1,250 per year (as of October 2026).

Frequently asked questions

Can US venture capital funds invest in an LLC?

Some cannot. Stripe's Atlas documentation describes C corporations as preferred by institutional investors who might be unable to invest in LLCs. Ask each investor about their own constraints.

Does Y Combinator require a Delaware C corp?

YC's FAQ requires companies incorporated outside the US, Canada, Singapore or the Cayman Islands to create a parent company in one of those jurisdictions. It does not name Delaware specifically.

What is the deadline for an 83(b) election?

No later than 30 days after the date the stock was transferred, per IRS Publication 525 (2025).

Do QSBS rules apply to non-US founders?

QSBS is a US tax benefit, so its relevance depends on each founder's tax residence. Ask a US tax advisor.

Restructuring for US investors is worth doing once and doing properly. If you are deciding whether US capital, US customers or both justify a Delaware company, book a 20-minute US Entry Review. Greatweek is not a law firm or tax advisor: confirm your structure, 83(b) filings and QSBS position with a qualified US corporate lawyer and tax advisor before acting.