How to open a Mercury account for your LLC from any country

0 dollars in monthly maintenance and approves roughly 70 to 80 percent of legitimate non-resident applications in under 5 business days. Mercury is the top fintech for non-resident LLCs. Column NA banking partner, FDIC coverage up to $5M via sweep, $0 domestic wires, 20+ free sub-accounts. Step-by-step application guide.

Mercury charges 0 dollars in monthly maintenance and approves roughly 70 to 80 percent of legitimate non-resident applications in under 5 business days.

Pillar guide: for the full step-by-step flow, see our definitive guide to opening a US LLC.

Mercury used to be the default banking recommendation for non-resident LLC owners. currently, Exentax no longer recommends Mercury as the primary account when your operations are entirely outside the United States. The reason is specific and operational, not ideological: when Mercury closes an account during a compliance review, increasingly common today, it returns the funds via a physical USD check in the LLC's name, mailed to the registered business address. For a tax resident in Spain, LATAM, or anywhere outside the US, depositing that check is slow, expensive, and at many European banks effectively impossible. This guide still explains how Mercury works and how to open it correctly, but read the warning below first.

> today advisory, Mercury and non-US operations.

> If 100% of your activity (clients, payments, expenses) happens outside the US, Exentax does not recommend Mercury as your primary account. The product is solid, but the compliance-closure failure mode (paper USD check) penalizes non-resident holders specifically. Use Relay (Thread Bank, FDIC) or Slash (Column N.A. (federally chartered, FDIC)) as the primary account; if you open Mercury, keep it as a secondary with a low operating balance. We design the stack with you in the initial consultation.

What is Mercury?

Mercury is a financial technology company that provides business banking services for US companies. It's not a traditional bank; it operates through Column NA (Column National Association), a federally chartered bank that holds your deposits with FDIC insurance up to $250,000 per depositor.

Mercury offers extended FDIC coverage through its sweep program that can extend coverage up to $5 million. Your funds are held in a real bank with a federal license, this is serious financial infrastructure, not a fintech experiment.

Why Mercury for non-resident LLC owners?

100% online application: You never need to visit a branch or be physically in the US. The entire process happens online.

Designed for online businesses: Mercury understands that many of its customers are running global businesses online. Their onboarding is built for non-residents.

$0 monthly fees: No minimum balance, no monthly maintenance fees. You pay nothing just to keep the account open.

Free wire transfers: Both domestic and international wires are free, sending and receiving. This is exceptional; most banks charge $15-45 per wire.

Free ACH: Automated Clearing House transfers are completely free.

Modern dashboard: Clean, well-designed interface with API access, integrations with accounting software, and excellent reporting tools.

What you need to open a Mercury account

Your LLC documents (Articles of Organization, EIN confirmation letter CP 575)
Your operating agreement (must include Disregarded Entity tax classification)
Your personal identification (passport)
Personal proof of address (utility bill, bank statement, or official correspondence)
Information about your business (what it does, expected transaction volumes, website or online presence)

The approval process

Mercury reviews your application and typically approves within 1-5 business days. The timeline depends on:

Completeness of your documentation
Nature of your business (some industries require additional review)
Your country of residence
Response time to any additional questions

At Exentax, we coordinate the Mercury application as part of our LLC formation service. We know what documentation Mercury needs and how to present your business to maximize approval chances.

What you get with Mercury

Checking account with routing number (117201490. Column NA) and account number
Savings account with competitive yield
Virtual debit card available immediately upon approval
Physical debit card mailed within 7-10 days
Free wire transfers both domestic and international
ACH transfers for recurring payments and collections
SWIFT code for international incoming wires
Mobile app for iOS and Android
API access for integration with accounting tools

Your Mercury payment details for clients

When clients need to pay you, provide:

For US clients (ACH):

Bank name: Column NA
Routing Number (ACH): 117201490
Account Number: [your unique number]

For US clients (Wire):

Routing Number (Wire): [see Mercury settings. different from ACH]
Account Number: [your unique number]

For international clients (Wire):

SWIFT Code: [see Mercury settings]
Bank Address: Mercury's partner bank as shown in your Mercury settings (typically Choice Financial Group, Fargo, ND or Evolve Bank & Trust, West Memphis, AR)
Account Number: [your unique number]

The complete financial infrastructure

Mercury is your foundation, but you need a complete stack:

Relay: your backup account

Relay uses Thread Bank as its banking partner (FDIC insured). It offers up to 20 free checking sub-accounts: perfect for organizing money by client, project, or purpose. It also provides payment links powered by Adyen, ideal for collecting payments from clients quickly and professionally. Never have all your money in one place.

Wise Business: your currency conversion tool

Wise is an EMI (Electronic Money Institution), not a bank. It's not FDIC insured: your funds are held in safeguarding accounts separated from Wise's operating capital. Use it for what it does best: convert currencies at the real mid-market exchange rate with transparent fees (typically 0.4-1.5%). Never use Wise as your primary treasury.

Slash: corporate treasury

Slash is a business banking platform with an operating account (ACH plus domestic and international wires), physical and virtual cards, and a treasury product invested in U.S. Treasury bills yielding approximately 3.82% on the invested portion with an effective APY of around 3.5% at the account level once fees and the un-invested cash sleeve are included (both figures are approximate and float with Fed rates). Slash is also crypto-friendly: it integrates fiat ↔ crypto on/off-ramps and accepts operators with crypto flows that Mercury and Wise reject or close. On reporting, Slash meets standard IRS obligations for U.S. entities (1099 where applicable); it does not report directly to a foreign tax-resident under CRS, since the U.S. does not participate in that standard.

When Mercury closes or freezes the account: the physical check

If Mercury decides to close an account (or freezes it pending a compliance review), funds are not held indefinitely: Mercury returns them to the holder via a physical USD check made out to the LLC, mailed to the company's registered address (typically the Registered Agent). This catches many non-residents off guard. To prepare, keep a second operating account ready (Relay, Slash or a European EMI in the stack) and a reliable mail-forwarding address, because several weeks can pass between issuance and the moment the check can be deposited.

Wallester: corporate cards

Wallester provides virtual and physical corporate cards with granular spend control. Create a separate virtual card for each subscription. one for AWS, another for Adobe, another for your domain registrar. This simplifies expense tracking and provides control without sharing your main debit card.

Revolut Business: multi-currency complement

Revolut Business offers multi-currency accounts in EUR, GBP, USD and more. Useful as a complement to Wise for European operations and for team card issuance.

Our recommended setup

This combination gives you FDIC protection, free wires, multi-currency capability, yield on idle cash, granular card control, and redundancy.

Common reasons Mercury applications get rejected

Understanding why applications fail helps you avoid the same mistakes:

Incomplete Operating Agreement: Missing Disregarded Entity classification or foreign owner identification. Mercury's compliance team checks this carefully.
Inconsistent information: LLC name on application doesn't exactly match Articles of Organization. Even a small typo triggers rejection.
High-risk business description: Certain industries (crypto, CBD, adult content, weapons) face additional scrutiny. Be transparent about your business.
Poor proof of address: Personal utility bills must show your name and current address. Hotel receipts or forwarded mail don't count.
No online presence: Mercury prefers businesses with a website, LinkedIn profile, or other verifiable online footprint.
Previous rejections: If you've been rejected before, reapplying without addressing the issues results in another rejection.

At Exentax, we prepare your Mercury application with all documentation formatted correctly. Our approval rate is significantly higher than DIY applications because we know exactly what Mercury's compliance team looks for.

Mercury account security best practices

Once your account is approved, protect it:

Enable 2FA (two-factor authentication) immediately
Use a strong, unique password: not reused from other accounts
Review login activity regularly in Mercury settings
Set up transaction alerts for transfers above a threshold you define
Keep your contact information current: Mercury may need to verify identity for large transactions
Never share your login credentials: use Mercury's team member features if you need to give someone access

Understanding FDIC insurance

FDIC (Federal Deposit Insurance Corporation) protects depositors if their bank fails. Key details:

Standard coverage: $250,000 per depositor, per bank
Mercury Treasury: Extends coverage up to $5,000,000 by distributing funds across multiple partner banks
What's covered: Checking accounts, savings accounts. all deposit accounts
What's NOT covered: Investments, crypto, safe deposit boxes
How it works: If Mercury's partner banks (Choice Financial Group / Evolve Bank & Trust) were to fail, FDIC would reimburse your deposits up to the coverage limit within days

For comparison: Wise is NOT FDIC insured (it's an EMI using safeguarding). Relay IS FDIC insured through Thread Bank. Understanding this difference is critical for deciding where to hold significant balances.

Frequently asked questions

Can I open a Mercury account without an LLC?

No. Mercury requires a US business entity. LLC, Corporation, or similar. This is why LLC formation comes first.

How long does the application take?

Typically 1-5 business days after submission. Exentax-coordinated applications average 2-3 days.

Can Mercury freeze my account?

Yes, for compliance reasons. Common triggers: receiving payments from sanctioned countries, sudden large deposits without explanation, using the account for personal expenses, or failing to maintain Good Standing with your state.

Do I need to maintain a minimum balance?

No. Mercury has no minimum balance requirement.

Can I receive payments in currencies other than USD?

Mercury accounts are USD-only. For non-USD payments, receive through Wise Business, convert to USD, and transfer to Mercury via free ACH.

What happens if Mercury decides to close my account?

You receive notice to transfer your funds. This is why having a backup account (Relay) is essential. never have all your business funds in one institution.

Next steps

Now that you have the full context, the natural next step is to map it against your own situation: what fits, what doesn't, and where the nuances depend on your residency, your activity and your volume. A quick review of your specific case usually saves a lot of noise before taking any structural decision.

Tax compliance in your country: CFC, controlled-foreign rules and income attribution

A US LLC is a fully legal, internationally recognized vehicle. But compliance does not end at incorporation: as an owner who is tax-resident elsewhere, your local tax authority still has the right to tax what the LLC earns. The key is under which regime.

By jurisdiction

Spain (LIRPF/LIS). An operative single-member disregarded LLC (real services, no significant passive income) is generally treated under income attribution (art. 87 LIRPF): the LLC's net profits are attributed to the member in the year they arise and integrated into the general IRPF base. If instead the LLC elects corporation treatment (Form 8832) and is controlled by a Spanish resident with mostly passive income, the CFC regime (art. 91 LIRPF for individuals, art. 100 LIS for companies) can apply. The choice is not optional: it depends on economic substance, not on the label.
Information returns. US bank accounts with average or year-end balance >€50,000: Form 720 (Law 5/2022 after CJEU C-788/19, 27/01/2022, penalties now under the general LGT regime). Related-party transactions and dividend repatriation: Form 232. US-custodied crypto: Form 721. We close it with you from Exentax: one call, the filing goes out, the archive is set, and the risk stays on paper.
Spain–US tax treaty. The treaty (BOE 22/12/1990, Protocol in force 27/11/2019) governs double taxation on dividends, interest and royalties. An LLC without a permanent establishment in Spain does not by itself create a PE for the member, but effective management can if all activity is run from Spanish territory.
Mexico, Colombia, Argentina and other LATAM jurisdictions. Each has its own CFC regime (Mexico: Refipres; Argentina: foreign passive income; Chile: art. 41 G LIR). Common principle: profits retained inside the LLC are deemed received by the member if the entity is treated as transparent or controlled.

Practical rule: an operative LLC with substance, properly declared in your country of residence, is legitimate tax planning. An LLC used to hide income, fake non-residence or shift passive income with no economic justification falls within art. 15 LGT (anti-abuse) or, worse, art. 16 LGT (simulation). The facts decide, not the paperwork.

At Exentax we structure the entity to fit the first scenario and document every step so your local return can be defended in case of review.

Legal and regulatory references

This article relies on rules currently in force. Main sources for verification:

United States. Treas. Reg. §301.7701-3 (entity classification / check-the-box); IRC §882 (tax on foreign income effectively connected with a US trade or business); IRC §871 (FDAP and withholding on non-residents); IRC §6038A and Treas. Reg. §1.6038A-2 (Form 5472 for 25% foreign-owned and foreign-owned disregarded entities); IRC §7701(b) (tax residency, substantial presence test); 31 U.S.C. §5336 (Corporate Transparency Act, BOI Report to FinCEN).
Spain. Law 35/2006 (LIRPF), arts. 8, 9 (residency), 87 (income attribution), 91 (CFC for individuals); Law 27/2014 (LIS), art. 100 (CFC for companies); Law 58/2003 (LGT), arts. 15 (anti-abuse) and 16 (simulation); Law 5/2022 (Form 720 penalty regime after CJEU C-788/19 of 27/01/2022); RD 1065/2007 (Forms 232 and 720); Order HFP/887/2023 (Form 721 crypto). And if a notice does land, at Exentax we keep the dossier ready so you reply in hours, not weeks.
Spain–US treaty. BOE of 22/12/1990 (original DTT); Protocol in force since 27/11/2019 (passive income, limitation on benefits).
EU / OECD. Directive (EU) 2011/16, amended by DAC6 (cross-border arrangements), DAC7 (Directive (EU) 2021/514, digital platforms) and DAC8 (crypto-assets); Directive (EU) 2016/1164 (ATAD: CFC, exit tax, hybrid mismatches); OECD Common Reporting Standard (CRS).
International framework. OECD Model Convention, art. 5 (permanent establishment) and Commentaries; BEPS Action 5 (economic substance); FATF Recommendation 24 (beneficial ownership).

Applying any of these rules to your specific case depends on your tax residency, the LLC's activity and the documentation you keep. This content is informational and does not replace personalized professional advice.

A balanced banking stack: Mercury, Relay, Slash and Wise

There is no perfect account for an LLC. There is the right stack, where each tool plays a role:

Mercury (operated as a fintech with partner banks (Choice Financial Group and Evolve Bank & Trust primarily; Column N.A. on legacy accounts), FDIC via sweep network up to the current limit). Main operating account for non-residents with strong UX, ACH and wires. Still one of the most proven options to open from outside the US.
Relay (backed by Thread Bank, FDIC). Excellent backup account and for envelope-style budgeting: up to 20 sub-accounts and 50 debit cards, deep QuickBooks and Xero integration. If Mercury blocks or asks for KYC review, Relay keeps your operations running.
Slash (backed by Column N.A. (federally chartered, FDIC)). Banking built for online operators: instant virtual cards by vendor, granular spend controls, cashback on digital advertising. The natural complement when you manage Meta Ads, Google Ads or SaaS subscriptions.
Wise Business (multi-currency EMI, not a bank). To collect and pay in EUR, GBP, USD and other currencies with local bank details and mid-market FX. Does not replace a real US account but is unbeatable for international treasury.
Wallester / Revolut Business. Wallester provides corporate cards on a dedicated BIN for high volume. Revolut Business works as a European complement, not as the LLC's main account.

The realistic recommendation: Mercury + Relay as backup + Slash for ad operations + Wise for FX treasury. This setup minimizes block risk and reduces real cost. At Exentax we open and configure this stack as part of incorporation.

Banking and tax facts worth clarifying

Fintech and CRS information evolves; here is the current state:

Before going further, put numbers on your case: the Exentax calculator compares, in under 2 minutes, your current tax bill with what you would carry running a US LLC properly declared in your country of residence.

> Free consultation, no strings attached

Notes by provider

Mercury operates with several federally chartered partner banks and FDIC coverage via sweep network: mainly Choice Financial Group and Evolve Bank & Trust, with Column N.A. still in some legacy accounts. Mercury is not itself a bank; it is a fintech platform backed by those partner banks. If Mercury closes an account, the balance is typically returned by paper check mailed to the account holder's registered address, which can be a serious operational problem for non-residents; keep a secondary account (Relay, Wise Business, etc.) as contingency.
Wise ships two clearly different products: Wise Personal and Wise Business. For an LLC you must open Wise Business, not the personal account. Important CRS nuance: a Wise Business held by a US LLC sits outside CRS because the account holder is a US entity and the US is not a CRS participant; the USD side operates via Wise US Inc. (FATCA perimeter, not CRS). In contrast, a Wise Personal opened by an individual tax-resident in Spain or another CRS jurisdiction does trigger CRS reporting via Wise Europe SA (Belgium) on that individual. Opening Wise for your LLC does not bring you into CRS through the LLC; a separate Wise Personal in your own name as a CRS-resident individual does report.
Wallester (Estonia) is a European financial entity with an EMI/issuing-bank licence. Its European IBAN accounts are within the Common Reporting Standard (CRS) and therefore trigger automatic reporting to the tax administration of the holder's country of residence.
Payoneer operates through European entities (Payoneer Europe Ltd, Ireland) that are also in scope for CRS for clients resident in participating jurisdictions.
Revolut Business: when paired with a US LLC, it operates under Revolut Technologies Inc. with Lead Bank as its US banking partner. The account delivered is a US account (routing + account number); no European IBAN is issued to a US LLC. The European IBANs (Lithuanian, Belgian) belong to Revolut Bank UAB and are issued to European clients of the group. If you are offered a European IBAN tied to your LLC, confirm exactly which legal entity holds that account and which regime it reports under.
Zero tax: no LLC structure delivers "zero tax" if you live in a country with CFC/tax transparency or income attribution rules. What you achieve is no double taxation and correct reporting at residence, not elimination.

Legal & procedural facts

FinCEN and IRS reporting requirements moved recently; the current state is:

BOI / Corporate Transparency Act: your LLC is NOT required to file (a competitive advantage). After FinCEN's March 2025 interim final rule, the BOI Report obligation was narrowed to "foreign reporting companies" (entities formed OUTSIDE the US and registered to do business in a state). A US-formed LLC owned by a non-resident does NOT file the BOI Report: one fewer filing on your calendar, less paperwork, and a cleaner structure than ever. If your LLC was formed before March 2025 and you already filed BOI, keep the acknowledgement. The regulatory status can change again: we monitor FinCEN.gov on every filing and, if the obligation comes back, we handle it at no extra cost. Current status verifiable at fincen.gov/boi.
Form 5472 + pro-forma 1120. For a Single-Member LLC owned by a non-resident, the final regulations of Treas. Reg. §1.6038A-1 (in force since 2017) treat the LLC as a corporation for 5472 purposes. Procedure: pro-forma Form 1120 (header only: name, address, EIN, tax year) with Form 5472 attached. It is filed by certified mail or fax to the IRS Service Center in Ogden, Utah, not e-filed via standard MeF. Due date: April 15; extension via Form 7004 to October 15. Penalty: $25,000 per form per year, plus $25,000 per additional 30 days of non-filing after IRS notice.
Substantive Form 1120. Only applies if the LLC has filed a check-the-box election to C-Corp (Form 8832): it then pays 21 % federal corporate tax and files a substantive 1120. A standard disregarded LLC does not file a substantive 1120 and does not pay federal corporate tax.
EIN and notice. Without an EIN you cannot file 5472 or BOI. The IRS does not warn before imposing penalties; you find out when an EIN is flagged or a later filing is rejected. This is where Exentax steps in: we file the form, archive the receipt and, if the authority asks, your answer is already on the desk.

References: sources on structures and jurisdictions

The comparisons and quantitative data on the jurisdictions cited here rely on official sources updated to today:

United States. Delaware General Corporation Law and Limited Liability Company Act, Wyoming Limited Liability Company Act (Title 17, Chapter 29), IRS Form 5472 instructions and IRC §7701 (entity classification).
Andorra. Llei 95/2010 de l'Impost sobre Societats (10% IS), Llei 5/2014 del IRPF and the active/passive residency framework of the Govern d'Andorra.
Estonia. Estonian Income Tax Act (deferred-distribution corporate tax at 20/22%) and official documentation of the e-Residency programme.
Spain. Ley 27/2014 (IS), Ley 35/2006 (IRPF, arts. 8-9 on residency and art. 100 on CFC) and the inbound-expat regime (art. 93 LIRPF, "Beckham Law").
OECD. Pillar Two (GloBE) and OECD Model Tax Convention with Commentaries.

Choosing a jurisdiction always depends on the holder's actual tax residency and on the economic substance of the activity; review your specific case before taking any structural decision.

_More on this topic: LLC in the United States: complete guide for non-residents._

Exentax today update: Mercury for non-resident LLCs

Mercury is still the default option for a non-resident LLC; the relevant today data:

FDIC sweep coverage up to USD 5M via Choice Financial Group, Evolve Bank & Trust and, in some legacy cases, Column N.A. Mercury is not a bank; it is a fintech platform on top of those partner banks.
today operating fees. Domestic wires at USD 0, international inbound USD 0 / outbound USD 5 (depends on the corridor), 20+ free sub-accounts. IO card with 1.5% cashback on Mercury Plus upgrade (USD 35/month).
today KYC. Initial docs: Articles, EIN Letter (CP 575 or 147C), signed Operating Agreement, passport, proof of address. If Mercury closes an account, the balance is returned by check to the registered address: keeping a live secondary account (Relay, Wise) is mandatory contingency.

Frequently asked questions

Does Mercury still accept non-resident LLCs today? Yes. Complete docs and source-of-funds traceability remain the main filter. Without a signed OA, KYC stalls.

What backup do you recommend? Wise Business for multi-currency + Relay for buckets or extra cards. Two live operating accounts prevent business loss if Mercury closes.

Does the Mercury account report via CRS? No. It is a U.S. account (FATCA/IGA), not CRS. But in your country of residence you must declare it if it exceeds the foreign-assets threshold (Spain: Modelo 720 if > EUR 50,000).

How we choose the LLC banking stack at Exentax

Mercury was the default for non-residents for years, but the Exentax method now always recommends a cascade stack because compliance closures have become routine. What we do every week with new clients is always the same.

Primary and mirror account from day one: Mercury or Relay as operating and Wise as backup so you keep liquidity if one freezes for 30 days.
Stripe plus alternative gateway (Paddle or DoDo) if you sell to end customers: one live gateway is a single point of failure.
Total documentary consistency: address, business description and MCC aligned across every KYC so the second review finds nothing odd.

For the account plan tailored to your operation, run the Exentax calculator or book thirty minutes.

Opening a US bank account as a non resident: Mercury vs Relay vs Wise vs traditional banks

Mercury is the default, but not the only option, and it pays to know where each alternative fits before you submit an application. This block summarises the real state of the market for non resident LLCs and walks through KYC on every platform.

Quick comparison table

Minimum KYC requirements

All four platforms ask for: LLC Articles of Organization, EIN Confirmation Letter (Form CP-575 or replacement), valid passport of the beneficial owner, verifiable personal address outside the United States, and signed Operating Agreement. Mercury and Relay add a short operating description of the business and source of funds. Wise additionally requests proof of activity (website, contracts, recent invoices) if expected volume crosses internal thresholds. Traditional banks add an in person interview, US address verification and, in many states, an ITIN or SSN.

Recommended step by step for a non resident LLC

Form the LLC and get the EIN before touching any banking application.
Open Mercury as the main USD operating account.
Open Wise Business for multi currency operations (EUR, GBP, AUD) and to receive European SEPA payments.
Consider Relay only if you need multiple sub-accounts for budgeting, or if Mercury introduces friction based on your country of residence.
Reserve traditional banks only if you will operate physical cash in the US or need an SBA loan.

Mistakes that trigger rejection

Personal address served by a generic mail forwarding provider with no verifiable contract.
Activity description too vague (for example "advisory" with no sector or clients).
Source of funds unexplained when wires above USD 25,000 arrive from a European EMI.
Generic Operating Agreement with no management or voting section.

> Want to see how much you save in fees and FX by combining Mercury and Wise? Drop your annual volume into the Exentax tax and operating calculator and compare it with your current setup.

For a deeper view of full banking structure read what US banks really report, and if you want to delegate the opening book a session with Exentax and we coordinate it step by step from formation.

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