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

Yes. Mercury explicitly supports foreign founders with a US LLC. You need the Connecticut formation document (the Certificate 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 Connecticut affect Mercury eligibility?

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

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

Mercury does not check where you live, only that the Connecticut entity is validly registered and that the details you enter match Connecticut'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 Connecticut's $120. Forming in Connecticut while working somewhere else usually means paying both states, not one.

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

Probably yes. Connecticut charges a 6.35% 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 Connecticut, or once you cross its remote-seller threshold of $100,000 in sales AND 200 transactions (both thresholds must be met).

Mercury asks for "Articles of Organization". Connecticut gave me a Certificate of Organization. Which do I upload?

Upload the Certificate of Organization. Connecticut does not issue a document called Articles of Organization; the Certificate of Organization is the same instrument under the name Connecticut uses for it, and it is what Mercury means by a formation or business-registration document.

Marketplace Verification

How to pass Mercury verification with a Connecticut LLC

What Mercury asks for at signup, and which Connecticut 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 Connecticut LLC is generally eligible for Mercury verification — you will need to provide your Certificate of Organization, EIN, beneficial-owner ID, and a valid US business address. Nothing about forming in Connecticut 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 Connecticut LLC, you must provide the company's formation document (in Connecticut, the Certificate 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 Connecticut the entity behind that check is an LLC created by filing a Certificate of Organization, which costs $120. Connecticut 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 Connecticut 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 Connecticut's filing fees and forms. Confirm current platform rules with Mercury, and current filing rules with the Connecticut filing office, before you file. Mercury's requirements were last reviewed 2026-07-21, and Connecticut's figures on this page come from its own published schedule.

What Mercury requires, and how a Connecticut LLC meets each

Requirement	How your Connecticut LLC satisfies it
LLC formation documents	Upload the Certificate of Organization Connecticut 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 Connecticut.
Government-issued ID for owner(s)	Provide a government ID for each beneficial owner named in your Connecticut filings. Connecticut 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 Connecticut (your Connecticut registered-agent or virtual business address), since a PO box is usually rejected.

Connecticut-specific things to watch

Connecticut 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. (Connecticut's annual report discloses the LLC's members or managers, a public filing.)
Connecticut issues a Certificate of Organization rather than "Articles of Organization." When Mercury asks for "formation documents," upload your Certificate of Organization.

Connecticut sales tax & nexus rules for Mercury sellers

Connecticut charges a 6.35% 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 Connecticut (an in-state location, inventory, or employees), or once you cross Connecticut's remote-seller economic-nexus threshold of $100,000 in sales AND 200 transactions (both thresholds must be met).

Connecticut is one of the few states that requires BOTH the dollar and transaction thresholds to be met — exceeding only one is not enough to create nexus. Connecticut does not allow local sales taxes, so the 6.35% state rate is the only rate you'll charge. SaaS and digital products are taxable in Connecticut.

How to verify your Connecticut LLC on Mercury

LLC formation documents. Upload the Certificate of Organization Connecticut 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 Connecticut.
Government-issued ID for owner(s). Provide a government ID for each beneficial owner named in your Connecticut filings. Connecticut 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 Connecticut (your Connecticut registered-agent or virtual business address), since a PO box is usually rejected.

Non-US founders with Connecticut LLCs

Mercury explicitly supports non-US founders who have formed a US LLC, Connecticut 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 Connecticut 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 Connecticut formation document (the Certificate 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 Connecticut issues a Certificate of Organization; Mercury accepts it the same as any other state's.
: Connecticut charges $120 to file a Certificate of Organization, and that is the state's fee to create the LLC. Connecticut 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 $120 filing fee and Connecticut's ongoing obligations are the real cost of getting verified as a Connecticut entity.
: Mercury does not check where you live, only that the Connecticut entity is validly registered and that the details you enter match Connecticut'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 Connecticut's $120. Forming in Connecticut while working somewhere else usually means paying both states, not one.
: Probably yes. Connecticut charges a 6.35% 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 Connecticut, or once you cross its remote-seller threshold of $100,000 in sales AND 200 transactions (both thresholds must be met).
: Upload the Certificate of Organization. Connecticut does not issue a document called Articles of Organization; the Certificate of Organization is the same instrument under the name Connecticut uses for it, and it is what Mercury means by a formation or business-registration document.