Can a non-US founder open a Mercury account with a California LLC?

Yes. Mercury explicitly supports foreign founders with a US LLC. You need the California formation document (the Articles of Organization), the IRS EIN letter, a non-US passport for identity, and a US business address. No US SSN or residency is required.

Does forming in California affect Mercury eligibility?

No. Mercury accepts LLCs from all US states and territories. The formation document name varies by state, and California issues Articles of Organization; Mercury accepts it the same as any other state's.

I do not live in California. Can I still use a California LLC on Mercury?

Mercury does not check where you live, only that the California entity is validly registered and that the details you enter match California's record. The catch is not Mercury, it is the state you actually operate from: states require an out-of-state LLC to register as a foreign LLC before it transacts business there, which is a second filing and a second fee on top of California's $70. Forming in California while working somewhere else usually means paying both states, not one.

Do I need a California sales-tax permit before my first sale through Mercury?

Probably yes. California charges a 7.25% state rate, and payments taken through Mercury are not covered by marketplace-facilitator laws, so you collect and remit yourself. Register before your first taxable sale if you have physical presence in California, or once you cross its remote-seller threshold of $500,000 in sales in the previous or current calendar year.

Marketplace Verification

How to pass Mercury verification with a California LLC

What Mercury asks for at signup, and which California LLC documents satisfy each requirement.

By Edmond Hui · Last updated: August 4, 2026

Edmond Hui · Founder, MyStateLLC

Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.

A California LLC is generally eligible for Mercury verification — you will need to provide your Articles of Organization, EIN, beneficial-owner ID, and a valid US business address. Nothing about forming in California blocks approval, and nothing about it guarantees approval either: the final call is Mercury's.

Mercury is a fintech banking platform whose deposits are held at FDIC-member partner banks (currently Choice Financial Group and Column N.A., Members FDIC), making it popular with startups and small businesses including those with non-US founders. To open a Mercury account for a California LLC, you must provide the company's formation document (in California, the Articles of Organization), an IRS-issued EIN confirmation, a government ID for the beneficial owner(s), and a physical US address. Mercury supports all US-state LLC types and is commonly used by foreign founders who have formed a US LLC, since it does not require founders to be US citizens or residents.

In California the entity behind that check is an LLC created by filing Articles of Organization, which costs $70. California does not publish a processing time for LLC filings, so treat state approval as the open-ended step in your timeline rather than the Mercury review. Because California names a member or manager on a routine public filing, the owner name Mercury asks you to confirm is already a matter of public record.

Not legal advice: Verification requirements change, and so do California's filing fees and forms. Confirm current platform rules with Mercury, and current filing rules with the California filing office, before you file. Mercury's requirements were last reviewed 2026-07-21, and California's figures on this page come from its own published schedule.

What Mercury requires, and how a California LLC meets each

Requirement	How your California LLC satisfies it
LLC formation documents	Upload the Articles of Organization California returned to you, stamped and approved.
IRS EIN confirmation letter	Provide your federal EIN (free from the IRS; non-US founders without an SSN must apply via Form SS-4 by fax or phone rather than the online tool) — independent of California.
Government-issued ID for owner(s)	Provide a government ID for each beneficial owner named in your California filings. California names a member or manager on a routine public filing, so at least one name already matches state records.
US business address	Use a US street address registered to the LLC in California (your California registered-agent or virtual business address), since a PO box is usually rejected.

California-specific things to watch

California names a member or manager on a routine public filing, so Mercury's beneficial-owner check will line up with public state records — you still upload a government ID for each owner. (The biennial Statement of Information (Form LLC-12) discloses managers or, if member-managed, at least one member, all public.)
Budget for California's ongoing LLC costs before projecting your Mercury margins: California LLCs owe an $800 minimum annual franchise tax to the Franchise Tax Board, plus an LLC gross-receipts fee above $250,000 of California income.

California sales tax & nexus rules for Mercury sellers

California charges a 7.25% state sales-tax rate. Payments through Mercury are not covered by marketplace-facilitator laws — you collect and remit yourself. Registration is required before your first taxable sale if you have physical presence in California (an in-state location, inventory, or employees), or once you cross California's remote-seller economic-nexus threshold of $500,000 in sales in the previous or current calendar year.

California has the highest nexus threshold at $500,000 — a deliberate policy choice. There is no transaction count requirement, only the dollar threshold. California's 7.25% base rate is the highest statewide rate in the nation; with local add-ons, rates can reach 10.75% in some districts. Register through the California Department of Tax and Fee Administration (CDTFA).

How to verify your California LLC on Mercury

LLC formation documents. Upload the Articles of Organization California returned to you, stamped and approved.
IRS EIN confirmation letter. Provide your federal EIN (free from the IRS; non-US founders without an SSN must apply via Form SS-4 by fax or phone rather than the online tool) — independent of California.
Government-issued ID for owner(s). Provide a government ID for each beneficial owner named in your California filings. California names a member or manager on a routine public filing, so at least one name already matches state records.
US business address. Use a US street address registered to the LLC in California (your California registered-agent or virtual business address), since a PO box is usually rejected.

Non-US founders with California LLCs

Mercury explicitly supports non-US founders who have formed a US LLC, California included. A non-US passport is accepted for identity verification. The entity must be formed and registered in the United States, and a US business address is required, which a California registered agent address satisfies. No US Social Security Number is needed from the founder.

Frequently Asked Questions

: Yes. Mercury explicitly supports foreign founders with a US LLC. You need the California formation document (the Articles of Organization), the IRS EIN letter, a non-US passport for identity, and a US business address. No US SSN or residency is required.
: No. Mercury accepts LLCs from all US states and territories. The formation document name varies by state, and California issues Articles of Organization; Mercury accepts it the same as any other state's.
: California charges $70 to file Articles of Organization, and that is the state's fee to create the LLC. California does not publish a processing time for LLC filings, so treat state approval as the open-ended step in your timeline rather than the Mercury review. Mercury charges nothing for verification itself, so the $70 filing fee and California's ongoing obligations are the real cost of getting verified as a California entity.
: Mercury does not check where you live, only that the California entity is validly registered and that the details you enter match California's record. The catch is not Mercury, it is the state you actually operate from: states require an out-of-state LLC to register as a foreign LLC before it transacts business there, which is a second filing and a second fee on top of California's $70. Forming in California while working somewhere else usually means paying both states, not one.
: Probably yes. California charges a 7.25% state rate, and payments taken through Mercury are not covered by marketplace-facilitator laws, so you collect and remit yourself. Register before your first taxable sale if you have physical presence in California, or once you cross its remote-seller threshold of $500,000 in sales in the previous or current calendar year.