How to pass Mercury verification with a Mississippi LLC

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 Mississippi LLC, you must provide the company's formation document (in Mississippi, the Certificate of Formation), 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 Mississippi the entity behind that check is an LLC created by filing a Certificate of Formation, which costs $50. Mississippi publishes a turnaround of same day (online). Because Mississippi 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.

What Mercury requires, and how a Mississippi LLC meets each

Mississippi-specific things to watch

• Mississippi names a member or manager on a routine public filing, so Mercury's beneficial-owner check will line up with public state records, and you still upload a government ID for each owner. (Mississippi's Certificate of Formation doesn't list members, but under Mississippi law the mandatory annual report requires the names and business addresses of managers (if manager-managed) or the name and address of at least one member (if member-managed), plus principal officers if any.)
• Mississippi issues a Certificate of Formation rather than "Articles of Organization." When Mercury asks for "formation documents," upload your Certificate of Formation.
• Budget for Mississippi's ongoing LLC costs before projecting your Mercury margins: No franchise or privilege tax on a default LLC (Mississippi's corporate franchise tax reaches an LLC only if it is taxed as a corporation, and none is levied for tax years beginning on or after January 1, 2028); note the foreign LLC annual report carries a $250 fee while the domestic LLC annual report is $0.

Mississippi sales tax & nexus rules for Mercury sellers

Mississippi charges a 7% state sales-tax rate. Payments through Mercury are not covered by marketplace-facilitator laws, so you collect and remit yourself. Registration is required before your first taxable sale if you have physical presence in Mississippi (an in-state location, inventory, or employees), or once you cross Mississippi's remote-seller economic-nexus threshold of $250,000 in sales in the previous 12-month period.

Mississippi was one of the first states to enact economic nexus rules (December 2017), predating the Wayfair decision. The $250,000 threshold is higher than the typical $100,000, and there is no transaction count. Mississippi has a 7% statewide rate, and some cities add their own local taxes. Register through the Mississippi Taxpayer Access Point (TAP).

Register for Mississippi sales tax directly with the state: tap.dor.ms.gov.

How to verify your Mississippi LLC on Mercury

1. LLC formation documents. Upload the Certificate of Formation Mississippi returned to you, stamped and approved.
2. 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 Mississippi.
3. Government-issued ID for owner(s). Provide a government ID for each beneficial owner named in your Mississippi filings. Mississippi names a member or manager on a routine public filing, so at least one name already matches state records.
4. US business address. Use a US street address registered to the LLC in Mississippi (your Mississippi registered-agent or virtual business address), since a PO box is usually rejected.

Non-US founders with Mississippi LLCs

Mercury explicitly supports non-US founders who have formed a US LLC, Mississippi 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 Mississippi registered agent address satisfies. No US Social Security Number is needed from the founder.