Every UK or European founder who starts thinking seriously about US venture capital runs into this question within the first few conversations. Do you need a US entity before American VCs will talk to you? Do you need to do the Delaware flip before your Series A? Can you raise from institutional US investors while still incorporated as a UK Ltd or a German GmbH?
The honest answer is: it depends. But that is not the same as saying it is unclear. The factors that determine what you actually need are well-established, and getting it wrong is expensive in either direction. Flip too early and you create tax complications, legal costs, and structural obligations before you have a committed investor. Wait too long and you hit friction at exactly the wrong moment in a fundraising process.
At Foothold America, we work with UK and European companies at every stage of US expansion. We are not lawyers and we do not give legal or tax advice on corporate structure. But we are deeply familiar with the operational questions around US entity setup, US hiring, and US market presence, and we talk to founders navigating these decisions every week. This guide gives you the framework to think it through clearly.
Why US Investors Prefer Delaware C Corporations
To understand when you need a US entity, you first need to understand why US investors have such a strong preference for one. This is not an arbitrary cultural preference. It has two specific, practical roots.
The Legal Familiarity Argument
Delaware’s corporate law is the most developed and predictable of any US state. Its Court of Chancery specialises in business disputes, operates without juries, and has built up decades of case law that investors and their lawyers understand inside out. If you want a detailed breakdown of how Delaware compares to other states for international companies, our Delaware vs Other States guide with tax calculator walks through it in full.
The mechanics that define a venture deal, including preferred stock with liquidation preferences, anti-dilution provisions, pro-rata rights, board seat structures, and drag-along provisions, all work cleanly and predictably within a Delaware C Corp. US investors and their counsel know exactly what they are getting.
When you are a UK Ltd or GmbH, you are asking investors to navigate unfamiliar legal territory. Different governance structures, different shareholder agreement mechanics, different rights frameworks. Most institutional US VCs will not want to do that unless the company is exceptional.
The Tax Argument
This is the less-discussed but often more important driver. Many US venture funds have limited partners (LPs) that include tax-exempt institutions such as university endowments, pension funds, and foundations. These LPs cannot participate in funds that invest in foreign companies without triggering complex and potentially punitive tax treatments under US law.
The two relevant rules are:
- PFIC (Passive Foreign Investment Company): a US tax classification that can apply to foreign companies with passive income characteristics and that carries highly unfavourable tax treatment for US investors
- CFC (Controlled Foreign Corporation): a classification that can create tax complications for US shareholders in foreign entities
A Delaware C Corp eliminates both problems entirely. That is why many US fund structures effectively require portfolio companies to be Delaware entities, not because the investors prefer it personally, but because their fund documents require it to protect their LPs.
Does It Depend on Your Stage? Yes. Here Is How.
The Delaware question plays out very differently depending on where you are in your funding journey.
Seed Stage
At seed, many US investors with established cross-border portfolios will invest in a UK or European company directly. Firms like Index Ventures, Accel, and Balderton have done this hundreds of times. They have built the legal infrastructure to handle UK Ltd investments. They understand the governance differences. They will not force a Delaware flip for a small early round if the company is good.
As Notion Capital’s established guidance on the Delaware flip explains, US investors require UK companies to execute a flip far less frequently at Series B and later than they do at earlier stages. This is because by that point, the investor has enough leverage to build the flip into the term sheet rather than requiring it upfront. That flips the conventional wisdom: later rounds are often more flexible on timing than earlier ones.
Who will invest in your UK entity at seed:
- Cross-border experienced VC firms with existing European portfolios
- US angels investing individually at smaller check sizes
- Seed-focused US funds that regularly back international companies
Who will typically require Delaware at seed:
- US accelerators like Y Combinator (though this has evolved)
- West Coast-focused VCs with limited international portfolio experience
- Any investor whose fund documents prohibit investment in non-US entities
Series A
This is where the picture gets most nuanced. Series A from a US institutional investor is the stage where Delaware pressure is strongest. Our US Venture Capital Guide covers how US VC funds are structured and what their investment mandates typically require, which is useful context for understanding why the entity requirement exists at all. West Coast VCs who do not regularly invest internationally will often require a Delaware entity before they will lead a round.
However, even at Series A, the requirement is not universal. The best approach, as USXP’s 2026 analysis drawing on Wilson Sonsini’s Dan Glazer advises, is to have the structural conversation with specific investors early in the process rather than assuming a flip is required. If a US VC is interested in your company, build the flip obligation into the term sheet as a closing condition. That way, the flip happens in parallel with the financing, and you do not carry the cost and complexity before you have a committed investor.
Series B and Beyond
Counterintuitively, growth-stage US investors are generally more willing to accept the incremental complexity of investing into a UK or European entity than earlier-stage investors are. By Series B, you have the metrics to prove you are a real business. Large growth-stage funds have the legal sophistication to handle cross-border investments. The flip requirement becomes less universal the stronger your traction.
This is consistent with Notion Capital’s long-standing guidance on the Delaware flip, which notes that US investors require UK companies to execute a Delaware flip less frequently when it comes to Series B or later financing rounds. The investors who are most inflexible about Delaware are often the earlier-stage, US-focused VCs, not the growth funds.
What the Delaware Flip Actually Involves
If and when you do need to flip, you need to understand what you are committing to before you start. The Delaware flip is not a simple administrative change.
What happens structurally:
- You incorporate a new Delaware C Corporation (your future parent entity)
- All existing shareholders exchange their shares in your UK or European company for shares in the new Delaware entity
- Your original company becomes a wholly owned subsidiary of the Delaware parent
- Future investment rounds happen at the Delaware level
What it costs and how long it takes:
Standard Ledger’s guide for UK founders puts the cost of a simple flip at £30,000 to £60,000 in combined legal and accounting fees. Timeline is typically six to eight weeks for a clean structure. If your cap table is complex, if you have multiple share classes, if there is IP split across entities, or if you have early institutional investors whose rights need to be mirrored in the new structure, cost and timeline both increase substantially.
Ongoing obligations after the flip:
- Delaware franchise tax filed annually
- Federal US corporate tax return
- State-level filings where you have employees or operations
- Transfer pricing documentation between the Delaware parent and your UK subsidiary
- Potential withholding tax management on inter-company payments
None of this is unmanageable. It does mean that the flip creates ongoing compliance obligations in two jurisdictions, and that this cost runs continuously from the point of the flip, not just at the time you execute it.
The SEIS and EIS Complication for UK Founders
This is the dimension of the Delaware flip that catches UK founders most off-guard.
Many UK startups have raised early capital through the Seed Enterprise Investment Scheme (SEIS) or the Enterprise Investment Scheme (EIS). These are UK government tax relief schemes that give investors significant income tax and capital gains tax relief in exchange for investing in qualifying UK companies.
The problem is that SEIS and EIS relief requires:
- Ordinary shares (not preferred)
- A UK permanent establishment
- The company to meet specific qualifying conditions
Executing a Delaware flip can affect your existing investors’ relief if it is not handled correctly. As Wise’s UK founders guide to US fundraising confirms, you can flip to Delaware and keep those benefits intact, but only with HMRC pre-clearance and proper legal work. Without it, your early investors lose their tax relief. That is a damaging conversation to have with people who backed you before you had traction.
The practical implication: UK founders with EIS or SEIS investors should approach the flip question with particular care and should absolutely not proceed without taking qualified UK tax advice alongside US legal counsel. This is one situation where getting independent specialist advice before you act is not optional.
How to Build Investor-Ready US Presence Before You Have a Delaware Entity
Here is the insight that changes the calculus for most founders: US investors are not primarily looking for a legal structure. They are looking for evidence that you are serious about the American market, that you have real operational presence there, and that you can execute.
You can build most of that evidence before you have a Delaware C Corp.
What real US market presence looks like:
- US-based customers generating meaningful revenue (5 to 10 paying accounts is the benchmark US Expansion Partners research points to for demonstrating repeatability)
- A founder or senior leader spending substantial time in the US. Frontline VC’s US Playbook recommends at least 50% of founder time in the US in the first 18 months of expansion
- US employees on the ground supporting sales, business development, or customer success
- A US bank account and financial infrastructure that is clearly separate from your European entity
- A go-to-market approach tailored to American buyers, not just adapted from your European playbook
Where an Employer of Record Fits
An Employer of Record (EOR) lets you hire US employees legally and compliantly without first incorporating in the US. That means you can have a US-based sales hire, business development manager, or market-facing employee on proper payroll, with full employment benefits, workers’ compensation, and correct state-by-state tax handling, within days of the decision to hire, before you have a US entity at all. Our guide to how EOR services accelerate US expansion timelines explains exactly how fast this can move compared to entity setup.
From an investor’s perspective, a company with a US employee actively building customer relationships is in a fundamentally different position from one with zero US presence and a plan to hire after the round closes. The EOR route demonstrates commitment in a way that slides and projections cannot.
It also avoids a critical mistake: doing the Delaware flip speculatively before you have a committed investor, creating compliance obligations and tax complexity for your existing shareholders, and then discovering that the investor you were targeting will not fund you regardless.
The US Banking Piece
US investors doing due diligence will look at your financial infrastructure. A US bank account that receives revenue from US customers and pays US employees, clearly separate from your European accounts, tells an investor that you are set up to run a real US business.
Getting a US bank account as a foreign company is considerably harder than most founders expect. Our guide on how to open a US bank account as an international founder covers the specific challenges in detail. Foothold America’s Bank Representation service exists specifically to help international companies navigate this, and it is one of the most common things we help clients with as they build toward investor conversations.
The Practical Decision Framework
Use this framework to work out where you are. If you are coming from the UK specifically, our full guide to expanding to the USA from the UK covers the full journey including entity structure, hiring, and banking.
You probably do not need a Delaware entity yet if:
- You are at pre-seed or seed, raising primarily from European investors or internationally-experienced cross-border VCs
- You have no specific investor who has raised the entity question
- You are still validating your US market and building initial traction
- Your EIS or SEIS investors would face complexity from a flip that you have not yet addressed
You should seriously prepare for the flip when:
- A specific US institutional investor has flagged structure as a potential concern
- You are approaching Series A and targeting West Coast-focused institutional VCs
- Your US revenue is growing to the point where the operational advantages of a US entity outweigh the setup cost
- You need to offer equity compensation to US employees through a standard stock option plan
You should set up a US entity regardless of investor pressure when:
- You have more than eight to ten US employees (EOR works best at smaller headcounts)
- You are contracting with US enterprise customers who require an American entity counterparty
- You are planning a US acquisition exit or IPO
- Your US business has reached the scale where direct employment economics make more sense than EOR fees
What Foothold America Does
Foothold America is not a law firm and does not give legal or tax advice on corporate structure. For the specifics of a Delaware flip and its implications for your shareholders, you need a qualified US attorney and home-country tax and legal counsel.
What we do is everything that sits around that decision and everything that comes after it.
Before you have a US entity:
- Hire your first US employees through our EOR service, legally and compliantly in their state, with proper benefits, within days
- Establish your US banking relationship through our Bank Representation service
- Help you build the US market presence that makes investor conversations credible
When you are ready to incorporate:
- US Entity Setup including registered agent, EIN, state registrations, and state payroll tax setup
- Bookkeeping and financial reporting so your US numbers are clean and investor-ready
- Transition your EOR employees to direct employment under your new entity without disruption
If you are thinking through the broader question of how to fund your US expansion and whether to go entity-first or market-test first, our piece on bootstrapped vs funded US expansion tackles exactly that decision.
We have helped hundreds of UK and European companies navigate this progression. Not with generic checklists, but with real conversations with experienced people who understand both sides of the Atlantic. When you are ready to talk through your specific situation, we are here.
Book a free consultation with our US expansion team.
Further reading
Frequently Asked Questions: Raising US Funding
Get answers to all your questions and take the first step towards a US business expansion.
Do I need a Delaware C Corp to raise from US investors?
Not always. Many cross-border seed investors will back a UK or European company directly. Delaware is more often expected at Series A and beyond, particularly by US institutional funds. Raise the question with investors early, so any restructure can be written into the term sheet and completed alongside the round rather than holding it up.
What is the Delaware flip?
A Delaware flip is a restructure that puts a new Delaware C Corp above your existing company. Shareholders swap their shares for shares in the US parent in the same proportions. Your original company becomes a wholly owned subsidiary. Future funding rounds then happen at the US parent level, which is what many US investors expect.
Can I build US market presence before I have a US entity?
Yes. An Employer of Record lets you hire US staff compliantly before you form an entity. Meanwhile you can win American customers, spend founder time in the US and open US banking. That evidence of traction often impresses investors more than projections. Our Employer of Record service handles payroll and benefits for a flat monthly fee.
What is the difference between a US subsidiary and a Delaware flip?
The difference is which company sits on top. In a flip, the new Delaware company becomes the parent and your original company sits beneath it. With a subsidiary, your European parent stays in control and owns a US operating company. A subsidiary works well operationally, but it rarely satisfies US venture investors who want to invest at the top.
What happens to my EIS or SEIS investors if I do the Delaware flip?
Their relief can be lost if the flip is handled badly. Preserving it usually needs advance clearance from HMRC and careful structuring of the share exchange. The new US parent may also need a UK permanent establishment. Take specialist UK tax advice alongside US legal counsel before you agree terms with any investor.
How long does it take to set up a Delaware C Corp?
The filing itself can be quick, but full setup takes longer. After incorporation you still need an EIN, a registered agent, a US bank account and state payroll registrations. Together these usually take several weeks. Banking is often the slowest step for foreign founders, so start that conversation as soon as your company is formed.
When should I transition from EOR to my own US entity?
Usually when your US headcount grows beyond a handful of staff, or when you need to grant equity. Enterprise customers wanting a US counterparty, or investors requiring a Delaware parent, are other triggers. Compare the cost of direct employment against EOR fees as you grow. Staff can then move across to your entity with little disruption.
What are the typical startup funding stages in the US?
Most US startups move through pre-seed, seed, Series A, Series B and later rounds. Early rounds fund product development and proof of demand. Series A usually backs a repeatable sales model. Later rounds pay for expansion, new products and senior hires. Investor expectations on structure, governance and reporting rise at each stage.
What are the main steps to raise investment for a startup in the USA?
Start by proving US demand with real customers. Build realistic financial projections and a clear pitch deck aimed at American investors. Choose funding sources suited to your stage, then target investors active in your sector. Check early whether your structure suits them, and line up legal and tax advisers before you sign a term sheet.
Do I need to open a US company to attract American investors?
Not at first. Many early investors care more about traction than structure, and some will invest in a UK or European company. Larger institutional rounds usually require a US company, often through a Delaware flip. Building US customers and a local team before you restructure keeps your options open and avoids unnecessary early cost.
What types of investors are most active in the US for early-stage funding?
Angels and seed funds are most active at the earliest stages. Accelerators also invest small amounts in exchange for equity and support. Venture capital funds typically lead Series A and later rounds, while corporate venture arms invest where there is a strategic fit. Look for investors who have backed international founders before.
How can foreign founders raise capital from US investors?
Show US traction before you ask for US money. Win American customers, hire locally through an Employer of Record and open US banking. Spend real founder time in the US building relationships. Warm introductions from existing investors, customers or advisers work far better than cold outreach. Be ready to discuss your structure when asked.
What legal requirements must be met to raise investment in the USA?
US securities law governs how you offer and sell shares. Most startup rounds rely on exemptions from full registration, and these carry their own conditions and filings. Investor documents, governance and disclosure all need care. Foothold America does not give legal advice, so engage a qualified US attorney early in the process.
Are there advantages to incorporating my company in the US when seeking investment?
Yes, for many companies. A US corporation removes tax friction for some US funds, simplifies term sheets and signals long-term commitment to the market. It can also make equity grants for US staff easier. The trade-off is extra compliance, filings and cost. Our Delaware C Corp vs UK Ltd guide compares the options.
What challenges do non-US startups face when trying to raise investment in the USA?
Distance, unfamiliar structures and limited US presence are the main hurdles. Investors may hesitate over foreign entities, time zones and untested US demand. Founders often underestimate how long US deals take and how much cash runway they need. Building local customers, a small US team and credible networks before raising helps overcome most of these.
How do I find the right US-based investors for my startup?
Target investors who already back companies in your sector and stage. Research their portfolios to see who has funded similar or international businesses. Prioritise warm introductions through customers, advisers and existing backers. Attend sector events in key US hubs, and use your early US customers as references when you start conversations with funds.
What are common mistakes to avoid when raising investment in the USA?
The most common mistake is raising before you have US traction. Others include flipping to Delaware too early, building weak financial projections and ignoring cash flow during a long raise. Founders also overlook SEIS or EIS consequences and US employment rules. Assume fundraising will take longer than planned and keep enough runway in reserve.
Where can I access resources or platforms to connect with US investors?
Investor databases such as Crunchbase and AngelList help you research funds and angels. Sector accelerators, trade bodies and US government small business resources offer further contacts and guidance. Expansion partners, including Foothold America, can introduce you to local networks and handle US hiring, entity setup and banking while you focus on raising.
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