Mercury and Relay are both fee-free business banking platforms. Mercury leans into startup tooling, treasury, and a polished product; Relay is built around multiple accounts and the Profit First envelope method. Pick Mercury for startup/treasury needs, Relay if cash-management-by-buckets is how you run the business.
Mercury (FDIC via sponsor banks)
Default pick for funded startups — $0 fee, unlimited digital, clean integrations.
Pros
Relay (FDIC via sponsor banks)
Up to 20 sub-accounts per business — best for Profit First and multi-bucket budgeting.
Pros
Pick Mercury if: Funded startups, e-commerce operators, and fully-online professional services businesses that don't take in physical cash.
Pick Relay if: SMBs running Profit First or any percentage-based cash allocation methodology that want up to 20 checking sub-accounts under one login.
Apply at Mercury (FDIC via sponsor banks) →Apply at Relay (FDIC via sponsor banks) →
Yes — both are FDIC insured through partner banks. Mercury holds deposits at Evolve Bank & Trust and Choice Financial Group (Members FDIC); Relay holds deposits at Thread Bank (Member FDIC). Standard FDIC coverage is $250,000 per depositor, per insured bank, per ownership category. Mercury also offers expanded FDIC coverage (up to $5M) through its cash sweep network across multiple partner banks. Source: Mercury at mercury.com, Relay at relayfi.com, FDIC at fdic.gov.
Relay is specifically designed for multi-account cash management — you can open up to 20 individual checking accounts and 2 savings accounts under one business, which aligns with Profit First envelope budgeting. Mercury supports multiple accounts and virtual cards, but its design emphasis is on the primary operating account plus treasury and integrations. If structuring cash into separate buckets (operating, taxes, profit, owner pay) is your goal, Relay's account architecture is purpose-built for it.
Mercury offers Mercury Treasury — a money market fund (Vanguard Treasury Money Market) available for balances over roughly $500K that earns a yield on idle cash. Mercury also offers a savings account earning interest on standard deposits. Relay does not currently offer a treasury/yield product; its differentiation is the multi-account framework and team spending controls. If maximizing return on large idle balances is a priority, Mercury's treasury product is a meaningful differentiator.
Mercury charges $0 for domestic wire transfers and $0 for ACH transfers. Relay charges $0 for domestic ACH and offers same-day ACH; Relay's domestic wires are $5 per outgoing wire, and international wires are $10 per wire. For a wire-heavy workflow (vendor payments, payroll via wire), Mercury's zero domestic-wire cost is a meaningful advantage. Source: Mercury at mercury.com; Relay at relayfi.com. Verify current fee schedules at each bank before opening, as fee structures can change.
Yes — Relay supports multiple team members on one account with role-based permissions: admins can view all accounts and approve payments, while employees can be granted access to specific accounts or virtual cards only. You can issue Relay debit cards to team members and set per-card spending limits. Mercury also supports team members with role-based access and virtual cards, but Relay's multi-account plus permissioned-card design is purpose-built for businesses running Profit First or envelope-style cash management with separate accounts per function.
Both Mercury and Relay offer direct QuickBooks Online integrations that sync transactions automatically. Mercury also integrates with Xero and offers a broader API that tech-forward teams use for custom accounting automations. Relay integrates with QuickBooks Online and Xero and offers Profit First–specific account-naming templates to keep envelope accounts organized. If you're running QuickBooks or Xero, either bank works well; Mercury's API adds flexibility for teams that want to build beyond standard integrations. Source: Mercury at mercury.com; Relay at relayfi.com.
Neither Mercury nor Relay offers cash deposits through bank branches or ATMs, because both are digital-first business banking platforms with no physical branch network. If your business regularly receives cash, you will need a workaround: some businesses deposit cash at a traditional bank and then ACH-transfer to Mercury or Relay. Both support check deposits via mobile capture. If cash handling is a frequent business need, a traditional bank with branch access (like Chase Business, Bank of America, or a local credit union) may be a better primary account.
Mercury has strong startup-specific features: venture debt access (Mercury Ventures), a cap table integration (Carta), a developer API, and treasury products for larger balances. Its partner ecosystem is designed for VC-backed companies raising rounds. Relay is better suited for small businesses, service businesses, and Profit First practitioners who need multiple checking accounts and cash-management controls rather than startup tooling. If you're building a company likely to raise capital, Mercury. If you're a founder running a bootstrapped SMB or a Profit First business, Relay's architecture fits better. Source: Mercury at mercury.com; Relay at relayfi.com.
Yes — both offer virtual debit cards that can be issued immediately upon account opening, useful for online vendor payments, subscriptions, and software tools before a physical card arrives. Mercury offers unlimited virtual cards per account. Relay also offers virtual cards and physical debit cards for team members. Both platforms allow you to freeze or cancel virtual cards instantly from the dashboard, which is useful for managing recurring vendor charges or segmenting spend by card. Source: Mercury at mercury.com; Relay at relayfi.com.
Mercury supports international wire transfers in multiple currencies — businesses can send international wires through Mercury to foreign vendor accounts. Relay currently focuses on domestic ACH and wire transfers and has more limited international payment support. For businesses with regular international vendor payments or cross-border operations, Mercury's international wire capability is a meaningful differentiator. Fees and available currencies vary; verify current international transfer terms at mercury.com before relying on international payment functionality. Source: Mercury at mercury.com; Relay at relayfi.com.
Independent editorial comparison. ClearValue Lending is not the issuer of any product compared here; affiliate links may pay a referral commission at no cost to you — selection is independent of compensation.