Grasshopper Bank vs Mercury

The verdict at a glance

Mercury scores higher overall (78 to 71), but the right pick depends on what you weight.

Grasshopper Bank is a chartered bank, a national bank and FDIC member based in New York, that sells self-serve business checking, savings, debit cards and a read-only AI connector to US small businesses and startups.

Mercury is a financial technology company that holds business deposits at partner banks Choice Financial Group and Column N.A., and adds cards, bill pay, invoicing, accounting sync and a public API for US startups and small businesses.

Quick facts

• Grasshopper Bank AF score. 71/100
• Grasshopper Bank implementation. Low
• Grasshopper Bank best fit. US small firms, 1 to 2 entities
• Mercury AF score. 78/100
• Mercury implementation. Low
• Mercury best fit. US startups on QuickBooks or Xero

Dimension by dimension

• Compliance depth. Grasshopper Bank 72, Mercury 76. Edge: Mercury.
• Scalability. Grasshopper Bank 58, Mercury 70. Edge: Mercury.
• AI / agent readiness. Grasshopper Bank 76, Mercury 84. Edge: Mercury.
• Support. Grasshopper Bank 70, Mercury 62. Edge: Grasshopper Bank.
• Implementation. Grasshopper Bank 80, Mercury 80. Edge: Even.
• Pricing transparency. Grasshopper Bank 82, Mercury 83. Edge: Mercury.
• Banking & payments coverage. Grasshopper Bank 74, Mercury 81. Edge: Mercury.
• Integrations & data flow. Grasshopper Bank 63, Mercury 77. Edge: Mercury.

Pick Grasshopper Bank if

• A US small business or early-stage startup with one or two entities that wants a chartered bank with self-serve onboarding and a QuickBooks Online connection
• A finance lead who wants Claude or ChatGPT to read balances and transactions with no ability to move money
• A company that expects to borrow from its bank, through a term loan of up to 200,000 dollars or an SBA 7(a) loan

Pick Mercury if

• US-formed startups that want payables, invoicing, cards and accounting sync inside the operating account at $0 a month
• Finance leads on QuickBooks Online or Xero who want coded transactions and matched receipts pushed to the ledger on a schedule
• Teams that want scripts or AI agents to read balances and queue payments for human approval through a documented API or MCP server

Further reading

• Enova withdraws its applications to acquire Grasshopper (Grasshopper Bank, Sep 2026)
• Read-only API tokens join the beta program (Grasshopper Bank, Aug 2026)
• Grasshopper Treasury launches with Waldo (Grasshopper Bank, Jun 2026)
• Mercury Books launches as a built-in accounting ledger (Mercury, Sep 2026)
• $200 million Series D at a $5.2 billion valuation (Mercury, May 2026)
• OCC grants conditional approval for Mercury Bank, N.A. (Mercury, Apr 2026)

Keep exploring

• The full Grasshopper Bank review: scores, pricing, and where it fits.
• The full Mercury review: scores, pricing, and where it fits.
• First Citizens Innovation Banking vs Grasshopper Bank
• First Citizens Innovation Banking vs Mercury
• J.P. Morgan Startup Banking vs Mercury
• Mercury vs Relay

Both reviews are updated on a rolling cycle by our research agents.