How to pass Mercury verification with a Maryland LLC
What Mercury asks for at signup, and which Maryland 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.
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 Maryland LLC, you must provide the company's formation document (in Maryland, 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 Maryland the entity behind that check is an LLC created by filing Articles of Organization, which costs $100. Maryland publishes a turnaround of 6-8 weeks. Because Maryland 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 Maryland LLC meets each
| Requirement | How your Maryland LLC satisfies it |
|---|---|
| LLC formation documents | Upload the Articles of Organization Maryland 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 Maryland. |
| Government-issued ID for owner(s) | Provide a government ID for each beneficial owner named in your Maryland filings. Maryland 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 Maryland (your Maryland registered-agent or virtual business address), since a PO box is usually rejected. |
Maryland-specific things to watch
- Maryland 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. (Maryland requires an authorized person on the Articles and files a Personal Property Return; management information is available on public filings.)
- Budget for Maryland's ongoing LLC costs before projecting your Mercury margins: Maryland LLCs owe a $300 minimum annual Personal Property Return fee.
Maryland sales tax & nexus rules for Mercury sellers
Maryland charges a 6% 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 Maryland (an in-state location, inventory, or employees), or once you cross Maryland's remote-seller economic-nexus threshold of $100,000 in sales or 200 transactions in the previous or current calendar year.
Maryland has no local sales taxes and a flat 6% statewide rate. Notably, Maryland taxes digital products and services including SaaS, streaming subscriptions, and digital downloads. Maryland was one of the first states to enact a digital advertising tax (though it has faced legal challenges). Register through the Maryland Central Registration portal.
Register for Maryland sales tax directly with the state: interactive.marylandtaxes.gov.
How to verify your Maryland LLC on Mercury
- LLC formation documents. Upload the Articles of Organization Maryland 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 Maryland.
- Government-issued ID for owner(s). Provide a government ID for each beneficial owner named in your Maryland filings. Maryland 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 Maryland (your Maryland registered-agent or virtual business address), since a PO box is usually rejected.
Non-US founders with Maryland LLCs
Mercury explicitly supports non-US founders who have formed a US LLC, Maryland 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 Maryland registered agent address satisfies. No US Social Security Number is needed from the founder.