A foreign-owned US LLC can apply to Mercury. Whether it qualifies depends on more than its formation certificate. Mercury reviews where its owners live, what the business does, where it operates, and its connection to the US.
This guide focuses on that review. For the wider banking process, start with our US business account guide. A complete application helps Mercury understand your business; it does not promise approval.
1. Check eligibility before buying anything
Mercury’s eligibility requirements say the business must be registered in the US or a US territory and have existing or planned US operations. Its owners do not need to be US citizens or residents.
Residence still matters. Mercury’s prohibited-country policy covers where founders live and where businesses operate or do business. Citizenship alone is not the same test. Someone with citizenship from a listed country who genuinely lives elsewhere may still be eligible, subject to review.
Check the live list before paying for formation or an address. Mercury also excludes certain business types, including money services businesses, crypto exchanges, adult entertainment, cannabis, internet gambling, and trusts.
Do not conceal a residence, customer location, or business activity. If the policy is unclear for your situation, ask Mercury before applying.
2. Separate the addresses
Mercury’s address rules distinguish the company’s legal, physical, and mailing addresses.
| Address | What it describes | What to prepare |
|---|---|---|
| Company legal address | The address on formation documents | A physical US address meeting Mercury’s legal-address rules |
| Company physical address | Where daily work happens | A verifiable office or residential address, including an international address |
| Mailing address | Where physical cards can arrive | A deliverable address meeting Mercury’s mailing rules |
| Owner residential address | Where each beneficial owner lives | The actual residence, with proof if requested |
A registered agent or mailbox does not establish where your team works. Mercury does not accept registered-agent, virtual, mail-center, or P.O. box addresses as the company’s physical address.
An overseas home can qualify as the physical address when it is where you work and can be verified. That does not remove the separate US-operations requirement. See our address guide and registered-agent guide.
3. Gather company and owner documents
Mercury’s document checklist identifies these records:
- State-filed Articles of Organization or a Certificate of Formation.
- An IRS-issued EIN document, such as CP575 or Letter 147C. EIN means Employer Identification Number, the company’s federal tax ID.
- Identification for each person owning at least 25%, directly or indirectly.
- Identification for at least one person with operating control.
International applicants may provide a passport. If using an SS-4 as EIN evidence, Mercury requires the version returned by the IRS, not just your application.
Trace ownership through any parent company to the individuals behind it. Have their ownership percentages and residential details ready. Your operating agreement can help explain the structure.
Keep clear, complete copies. An expired identity document or a different company name needs attention before submission. If the EIN letter is missing, read our 147C replacement guide.
4. Explain real US operations
Mercury’s current US-operations verification guidance is more specific than “have a US LLC.”
It may request extra evidence if the business has no US workplace, no beneficial owner living in the US, and no beneficial owner with a US-issued ID. Requests can happen during onboarding or after approval.
Examples Mercury lists include:
- A record of a sale to a US customer.
- An invoice or contract with a US customer, partner, or supplier.
- A signed investment agreement.
- Employment or payroll documents for US employees.
- A signed lease for a real US office or coworking space.
Its guidance says evidence must match deposit or payment activity. A registered-agent address is not an office lease.
For a new business with planned operations, explain what is planned and ask what evidence Mercury will accept at that stage. Do not create artificial transactions or describe prospective customers as signed clients. US operations remain a condition of keeping the account.
5. Respond to information requests clearly
A request for more information can mean Mercury needs to verify an address, understand the ownership chain, or connect your business description with its transactions. It does not necessarily mean rejection.
Answer the question asked. For address proof, Mercury lists options including a signed lease or recent utility or non-Mercury bank statement. Documents should show the relevant company or owner’s name and the full address.
Explain your source of funds plainly: owner contributions, customer payments, or investment, as applicable. Supporting records should describe the same activity.
Use Mercury’s secure submission channel. If an email looks unusual, verify it through the official website before sharing identity documents. Keep a copy of what you submitted and correct errors openly.
6. Understand protection and alternatives
Mercury is a financial technology company, not an FDIC-insured bank. FDIC is the Federal Deposit Insurance Corporation. Mercury’s insurance explanation names partner banks Choice Financial Group and Column N.A., Members FDIC.
Eligible deposits can receive pass-through FDIC insurance, subject to conditions and applicable limits. FDIC insurance covers an insured bank’s failure. It is not blanket protection against fraud, account restrictions, or every fintech failure. Mercury Treasury investments are not FDIC-insured deposits.
If Mercury does not fit, compare traditional banks, other business-account platforms, and multicurrency payment providers. Check residence eligibility, remote onboarding, payout compatibility, fees, and whether funds are deposits or safeguarded payment balances. None is an automatic fallback.
7. Keep banking and tax decisions separate
Mercury’s definition of US operations is an account policy, not an IRS tax ruling. A US customer contract may support onboarding without settling whether you have a US trade or business or state tax nexus, a connection that creates state tax obligations.
Likewise, a US EIN does not automatically make Form W-9 correct. For an LLC disregarded as separate from its foreign owner for income tax, tax certification generally follows the owner. The IRS W-8BEN instructions explain this distinction. The appropriate W-8 form depends on the owner and income.
Read our W-9 versus W-8 guide. Payment processing also has separate checks, covered in our Stripe guide.
8. FAQ
Do I need a US office?
Not necessarily. Mercury accepts a verifiable international physical address, but requires existing or planned US operations and may request evidence.
Can I apply without an SSN or ITIN?
Mercury publishes a passport route for international applicants. That alone is not a promise that no additional tax identifier will be requested. Confirm your application requirements directly.
Does an EIN guarantee an account?
No. It documents the company’s tax ID. Mercury separately reviews eligibility, ownership, addresses, and business activity.
Can a formation provider secure approval?
No. We can prepare company documents through formation services, but Mercury makes its own decision.
Sources checked October 2026
Mercury’s official eligibility, country, address, document, US-operations, and insurance pages, plus IRS W-8BEN instructions, are linked above. Checked October 18, 2026; recheck Mercury’s requirements before applying.
