The process is more accessible than most people think — if you know where the real obstacles are
The United States is the largest consumer market in the world. For Mexican entrepreneurs, reaching it no longer requires a physical office from day one, a U.S. business partner, or years of preparation. A properly formed LLC gives you a legal U.S. business presence, the ability to open a business bank account, and the foundation to invoice American clients, sign contracts, and operate legitimately in the U.S. market.
The process is accessible. But it has specific friction points that catch most people off guard. This guide walks you through what actually matters.
What Is an LLC and Why Does It Work for You
A Limited Liability Company — LLC — is the most flexible and commonly used business structure in the United States for small and medium businesses. For foreign nationals, it offers several advantages:
- Personal liability protection: Your personal assets are separate from your business obligations
- Pass-through taxation: Business income passes directly to your personal tax return — no double taxation at the entity level
- Flexible management structure: No board of directors, no annual shareholder meetings, minimal ongoing compliance requirements
- Foreign ownership allowed: Non-U.S. citizens and non-residents can own 100% of an LLC
This last point matters: you do not need a U.S. citizen as a partner or nominee. You can own your LLC entirely as a Mexican national.
Step 1: Choose the Right State
LLCs are formed at the state level in the U.S. — not federally. The state you choose affects your annual costs, privacy level, and compliance requirements. Three states dominate for foreign-owned LLCs:
| State | Why It Works | Annual Cost | Best For |
|---|---|---|---|
| Delaware | Most established legal framework, preferred by investors and banks | ~$300 USD/year | Companies seeking future investment or scaling |
| Wyoming | Strongest privacy protections, lowest costs, no state income tax | ~$60 USD/year | Entrepreneurs prioritizing low cost and privacy |
| Arizona | Best choice if you’ll physically operate or hire here | ~$85 USD/year | Businesses with Arizona-based operations |
The practical rule: If you will operate physically in Arizona — hire employees, lease office space, meet clients here — form in Arizona. If your operations are remote or national, Wyoming is the most cost-effective choice. If you anticipate seeking investment or working with institutional partners, Delaware is the standard they expect.
Step 2: Form the LLC
The formation process involves filing Articles of Organization with the state’s Secretary of State office. This can be done online in most states.
What you need to file:
- Your LLC name (must be available in that state)
- Your registered agent — a person or company with a physical address in the state who receives legal documents on your behalf
- The names and addresses of the LLC members (owners)
- The management structure (member-managed or manager-managed)
Timeline: 1–5 business days for standard processing in most states. Same-day or next-day options exist for an additional fee.
The registered agent requirement: Every U.S. LLC needs a registered agent with a physical address in the state of formation. If you are based in Mexico, you cannot serve as your own registered agent. Registered agent services typically cost $50–$150 USD per year.
Step 3: Get Your EIN
The EIN — Employer Identification Number — is the IRS-issued tax identification number for your business. It functions like an RFC in Mexico: it identifies your entity for tax purposes, is required to open a business bank account, and is needed to hire employees or file federal taxes.
Foreign nationals without a U.S. Social Security Number can still obtain an EIN. The process involves submitting Form SS-4 to the IRS — either by fax or by phone (international callers can reach the IRS directly). Processing time: typically 2–4 weeks by fax, same-day by phone if you can navigate the IRS phone system.
Krear handles this step for clients as part of the LLC formation engagement.
Step 4: Open a Business Bank Account
This is the step where most foreign nationals hit a wall — and where having guidance makes the biggest difference.
U.S. banks require in-person verification to open a business account. Most major banks (Chase, Bank of America, Wells Fargo) require the account opener to appear physically at a branch with:
- LLC formation documents (Articles of Organization)
- EIN confirmation letter from the IRS
- Valid passport
- In some cases: proof of U.S. address
The practical implication: If you are based in Mexico, you will need to make at least one trip to the U.S. to open your business bank account. This is not a bureaucratic formality — it is a legal requirement under U.S. anti-money-laundering regulations.
Alternatives that work for some use cases:
- Mercury or Relay (online business banks): More accessible for foreign-owned LLCs, fully digital, no branch visit required.
- Arizona-based credit unions: Sometimes more flexible than major national banks for locally-operating foreign-owned LLCs.
Step 5: Understand Your Tax Obligations
This is where most foreign-owned LLCs get into trouble — not from fraud or bad intent, but from simply not knowing the rules.
Federal taxes: Your LLC’s income is reported on your U.S. federal tax return. If your LLC has no U.S.-source income and no U.S.-based employees, your filing obligations may be minimal.
FBAR and FinCEN reporting: If your U.S. business bank account exceeds $10,000 at any point during the year, you have reporting obligations under U.S. financial crime regulations. Missing these filings carries significant penalties.
Mexican tax implications: Income earned through your U.S. LLC may also be reportable to the SAT in Mexico, depending on your residency status and the tax treaty between the two countries.
Krear connects clients with qualified CPAs who specialize in cross-border tax situations. We do not replace the accountant — we make sure you have the right one from the start.
What This Costs in Total
| Item | Estimated Cost |
|---|---|
| State filing fee | $60–$300 USD |
| Registered agent (annual) | $50–$150 USD |
| EIN processing | Included in Krear engagement |
| Bank account setup | $0 (no minimum balance at most digital banks) |
| CPA consultation | $300–$600 USD |
| Krear engagement fee | From $800 USD |
| Total (Year 1) | ~$1,200–$2,000 USD |
“The most expensive mistake foreign entrepreneurs make is forming an LLC without understanding the tax and banking implications. Getting it right from the start costs less than fixing it later.”
Start Your LLC Consultation with Krear →
Krear Consultancy · Scottsdale, Arizona · Mexico City
Last reviewed: June 2026