Mercury provides checking and savings accounts for U.S.-registered businesses. It is a financial technology company, not a bank, and routes deposits through partner banks that hold the actual charters.
The account belongs to the business entity itself, not to an individual owner. Mercury has been widely adopted by companies formed through incorporation services like Stripe Atlas or Y Combinator, and it supports higher transaction volumes than typical small-business checking products.
What the product is structurally
Mercury sits between a business and its money, not inside the banking system itself. Deposits are held at partner banks, and account activity is reported under the business’s EIN rather than an individual’s Social Security number.
Ownership of the account tracks the legal entity, not a person. The business owner assigns permission levels to employees, bookkeepers, or investors instead of adding them as joint account holders.
The entity must be formed and domiciled in the United States — an LLC, C-corp, or similar structure. The people who own or operate the business do not need to be U.S. citizens or residents.
Mercury issues Visa-branded debit cards tied to the checking account, separate from the Mercury IO corporate charge card. Card spending, deposit balances, and Treasury allocations all roll up under the same business entity, regardless of which employee initiated the transaction.
How it works in practice
Mercury accounts support ACH transfers, domestic wires, international USD wires, mobile check deposit, and bill pay through a single dashboard. The dashboard aggregates transactions and supports tagging for accounting and reconciliation.
Cash above FDIC insurance limits at the primary partner bank can be routed into a sweep network of additional partner banks, or into Treasury money market funds. Businesses select how idle cash is allocated between plain deposits and the Treasury option, and can typically move money between the two as balances change.
The platform exposes an API for payment automation, letting higher-volume businesses initiate transfers and reconcile accounts programmatically rather than through manual entry. This distinguishes Mercury from banking products built primarily for manual, single-user bookkeeping.
Mercury IO is a separate corporate card product tied to the connected deposit balance. Card spend and the underlying checking account both appear in the same dashboard, alongside Treasury allocations.
Fees and pricing mechanics
The standard Mercury account carries no monthly or annual account fee and no minimum balance requirement. Domestic and international USD wires are included at no fee, both incoming and outgoing.
Mercury does not charge for the core account because it earns revenue elsewhere: interchange on card transactions, interest on customer deposits, and a spread on Treasury investment products. This is the same revenue structure common among fee-free business banking platforms.
Mercury Plus and Mercury Pro are optional paid tiers, priced at $35 and $350 per month as of early 2026. These tiers add higher wire limits, dedicated support, additional user permissions, and higher API rate limits.
Savings yield is a variable rate, driven by the Treasury sweep program rather than a fixed rate set by Mercury. The rate moves with prevailing short-term interest rates and the underlying fund’s expense ratio.
Limits, eligibility, and availability
Mercury requires the business to be formed and domiciled in the United States. Eligible structures include LLCs, C-corps, S-corps, and sole proprietorships; founders do not need U.S. citizenship or residency.
Deposits carry FDIC insurance up to $5 million through the partner bank sweep network, well above the standard $250,000 single-bank limit. Coverage above $5 million would require holding funds outside the sweep structure.
ATM access runs through the Allpoint network, with no fee at in-network machines. Approval for a new account typically takes one to three business days, and international businesses incorporated outside the U.S. are generally not eligible.
The application requires an EIN, formation documents, and beneficial ownership information for anyone who owns a meaningful stake in the business. Daily ACH and wire limits are set by default and can be raised through account settings, subject to review.
Higher-volume businesses that need larger limits or custom API access typically work directly with Mercury’s support team to negotiate terms outside the default configuration. This scales the account differently than a standard consumer checking product, which has no equivalent negotiation path.
Tradeoffs, risks, or limitations
Mercury does not hold a bank charter. If Mercury faced operational difficulties, continuity of account access would depend on the partner banks, though insured deposits would remain protected.
Treasury money market funds are not FDIC-insured. These funds invest in short-term instruments and have historically stayed stable, but net asset value can fluctuate in rare stress events.
The permission-based access model means no individual co-owns the account with the business. Removing a user’s access is an administrative change, not a joint-account dispute, which shifts control entirely to whoever administers the entity’s Mercury account.
Customer support operates through email and in-app channels, with no phone line on standard tiers. Complex issues can take multiple business days to resolve through asynchronous communication.
Because the account and card both draw on the same connected deposit balance, a large card spend or a pending wire can temporarily compress the cash available for other uses. Businesses that need a hard separation between spending capacity and operating cash would need to structure that separately, since Mercury does not enforce it by default.
See also: Mercury Corporate Card Review, Mercury Personal Review, Brex Review, Relay Review
