Mercury Review 2026: The Default US Banking Stack for Global SaaS & LLC Founders

What is Mercury?

Mercury is a US financial technology platform that provides business banking services (through FDIC-insured partner banks Choice Financial Group and Column N.A.) specifically engineered for startups, SaaS companies, agencies, and e-commerce businesses incorporated in the United States. Unlike traditional US brick-and-mortar banks (Chase, Bank of America, Silicon Valley Bank) that usually require an in-person branch visit or a US Social Security Number (SSN), Mercury allows non-US resident founders to open a US business account 100% online once their Delaware C-Corp or US LLC is formed and has received its IRS Employer Identification Number (EIN).

Core checking and savings accounts carry $0 monthly fees, $0 minimum balance requirements, and free domestic ACH and USD wire transfers.

Who should use Mercury?

• European / DACH Founders Launching a US Entity: If you incorporate a Delaware C-Corp or Wyoming/Delaware LLC through Firstbase, doola, or Stripe Atlas to sell to US enterprise customers or raise US venture capital, Mercury is the primary US banking layer.
• VC-Backed Startups: Mercury Treasury offers automated yield on idle cash balances, and Mercury's vault sweep network provides up to $5M in FDIC insurance across partner banks.
• High-Velocity Software & Agency Teams: Issue instant virtual and physical Visa/Mastercard corporate cards, set per-vendor spend limits, and automate accounting exports to QuickBooks, Xero, and NetSuite.

Mercury Pricing & Account Structure (2026)

Feature	Mercury Core ($0/mo)	Mercury Plus ($35/mo)	Mercury Pro ($350/mo)
Checking & Savings	$0 / month, no minimum balance	Included	Included
Domestic ACH & USD Wires	Free	Free	Free
International USD Wires	Free (approx. 1% FX on non-USD currencies)	Free USD wires	Free USD wires + lower FX
Invoicing & Bill Pay	Basic included	Recurring invoicing & advanced bill pay	NetSuite sync & multi-user approvals

What do non-US founders need to open a Mercury account?

Mercury does not onboard European GmbHs, UK Ltds, or Estonian OÜs directly—it only onboards US-registered legal entities (LLCs, C-Corporations). To pass Mercury compliance as an international founder:

1. US Formation Documents: Articles of Incorporation (C-Corp) or Articles of Organization (LLC) — typically prepared via Firstbase or doola.
2. Official IRS EIN Verification: Form CP575 or 147C letter from the IRS.
3. Physical Operating Address + Passport: While your company can use a US Registered Agent address for legal notices, Mercury requires a verifiable physical residential or office address (outside of restricted jurisdictions) for the beneficial owners, plus a valid government passport.
4. Live Website or Proof of Business Activity: Have your company domain, landing page, or client contracts ready during the application to prevent compliance rejections.

Mercury vs Qonto vs Revolut Business

• US Entity (Delaware LLC / C-Corp): Use Mercury as your primary USD bank, and pair it with Wise Business for low-fee EUR/GBP transfers.
• European Entity (German GmbH/UG, French SAS, Spanish SL): You cannot open Mercury without a US subsidiary. Use Qonto (up to €280 welcome bonus) for domestic EUR operations and Revolut Business (€150 referral campaign) for USD/GBP multi-currency banking.

FAQ

Is Mercury a bank?

Mercury is a financial technology company, not a bank. Banking services are provided by Choice Financial Group and Column N.A., Members FDIC. Deposits are insured up to $5M through partner sweep networks.

Can I open a Mercury account without a US SSN?

Yes. International founders with a valid passport, a registered US LLC or C-Corp, and an IRS EIN can apply online without a US Social Security Number or US residency.