Mercury
FreeBanking built for startups
About Mercury
Mercury is the startup bank account that most YC and VC-backed companies open as their first business account. FDIC insured up to $5M through partner banks via sweep network, no monthly fees, no minimum balance. Core banking: checking and savings accounts, ACH, domestic wires ($0), international wires ($25), virtual and physical debit cards. Mercury Treasury offers FDIC-insured money market accounts for idle cash at competitive yields. Mercury IO is a charge card program with 1.5% cashback and no personal guarantee, launched in 2023. The main limitation: Mercury is a fintech, not a bank — customer support is email-only with no phone number, which is a genuine problem when you need to resolve a frozen account quickly. Fraud detection occasionally freezes accounts incorrectly, and the resolution process goes through a support ticket queue. r/startups has multiple threads about account freezes during critical moments like fundraising rounds. Competes with Brex (cards-first spend management), Ramp (expense automation-first), and traditional banks post-SVB collapse in 2023. Best for early-stage startups that need a clean, no-fee online business bank account without in-person banking requirements.
Key Features
Pricing Plans
Free
- Checking and savings
- Domestic wires
- Corporate cards
- Team access
Plus
- Everything in Free
- International wires
- Advanced permissions
- Priority support
Enterprise
- Everything in Plus
- Dedicated banker
- Custom integrations
- Venture debt access
Pros
- Beautiful and intuitive banking interface
- No fees on the free tier for most operations
- Strong API for programmatic banking
- FDIC insured up to $5M through sweep networks
- Fast domestic and international transfers
- Great startup ecosystem integrations
Cons
- Not a chartered bank - uses partner banks
- No physical branch locations
- Cash deposits are not straightforward
- International features are limited
- Customer support can be slow during high volume
- Some account restrictions for certain industries
Best For
- early-stage startups that need a no-fee online business bank account with no minimums
- YC and VC-backed companies that want startup-friendly banking without a relationship manager
- teams that need FDIC coverage above the $250K limit via the sweep network (up to $5M)
- companies wanting checking, savings, and a corporate card from one provider
Not Ideal For
- businesses that need phone support or in-person banking for urgent account issues
- companies where a frozen account during fundraising would be catastrophic (real risk)
- businesses with complex banking needs that require a dedicated relationship banker
Potential Deal Breakers
- email-only customer support with no phone number for urgent account issues
- account freezes from automated fraud detection with slow resolution via support tickets
- Mercury is a fintech (not a chartered bank) — deposits held at partner banks, adding counterparty exposure
Data & Privacy
Startup banking platform. Handles sensitive financial data. FDIC-insured through partner banks. No AI training on financial data. SOC 2 Type 2 certified. US-only service. Full transaction history exportable.
Who Is This For?
Hands-on tested May 2026
Signup Experience
Email signup followed by a business application -- requires EIN, business formation documents, and owner identity verification. Approval typically takes 1-3 business days. Interface is clean and modern once approved. No branch visits required and the entire process is online.
For Home Users
Not applicable for personal banking. Mercury is a business account product only and requires a registered US business entity to open.
For Business Users
Free checking with no minimum balance, no monthly fees, and modern API access is the core appeal. Treasury accounts earn 4.5%+ yield on idle cash. Credit cards, bill pay, and multi-user access are all included. The startup-native design means integrations with Stripe, Gusto, and QuickBooks work smoothly. A strong default choice for US startups that find traditional bank UX frustrating.
Our Verdict
Mercury is the right first bank account for most startups — no fees, no minimums, clean UI, and startup-friendly. The email-only support is the real risk: if your account gets frozen at a bad moment, you're waiting in a ticket queue. Keep a backup account at a traditional bank for operational resilience, especially if you're holding significant cash.