Mercury vs Relay (2026): Which Business Bank Is Best for Your LLC?
Mercury and Relay are both digital-first business banks built for startups and LLCs, but they serve different needs. Mercury offers venture-backed companies powerful treasury tools, international wire capabilities, and integrations tailored for high-growth tech teams. Relay focuses on solopreneurs and small teams with unlimited free checking accounts, built-in bookkeeping features, and generous sub-account limits. This comparison breaks down pricing, features, account structure, and support so you can pick the right bank for your business stage and workflow.
Side-by-side comparison
| Criterion | Mercury | Relay |
|---|---|---|
| Monthly Fee | $0 (standard checking) | $0 (all accounts) |
| Number of Accounts | 1 primary checking per entity | Up to 20 checking accounts |
| Virtual/Physical Cards | Virtual & physical debit cards | Up to 50 virtual cards per account + physical cards |
| International Wires | Yes (domestic & international) | No (domestic ACH & wires only) |
| Wire Transfer Fees | $0 domestic, varies for international | $0 domestic wires |
| Bookkeeping Features | QuickBooks & Xero integrations | Built-in transaction tagging, categorization, and reports |
| Eligibility | LLCs, C-corps, S-corps (selective) | LLCs, sole proprietors, C-corps, S-corps |
| Customer Support | Email, chat; dedicated reps for funded startups | Email support; community resources |
How they differ
Mercury is designed for venture-funded startups and growth-stage companies that need robust cash management, multi-currency support, and integrations with tools like Ramp, Gusto, and QuickBooks. It offers virtual and physical debit cards, ACH and wire transfers (domestic and international), and advanced treasury features for managing runway and optimizing interest on idle cash. Mercury's interface is clean and developer-friendly, and it provides dedicated account management for funded companies. However, Mercury requires a U.S. entity and is selective about which businesses it accepts—sole proprietorships and certain industries are often declined.
Relay takes a different approach: it's built for solopreneurs, freelancers, and small LLCs that want simplicity and zero fees. Relay offers up to 20 free checking accounts and 50 virtual debit cards per account, making it ideal for organizing finances by client, project, or expense category. Its built-in bookkeeping features, including transaction tagging and automated categorization, reduce the need for separate accounting software. Relay has no minimum balance requirements, no monthly fees, and no wire transfer fees for domestic wires. It accepts sole proprietors and a broader range of business types than Mercury. The trade-off is fewer advanced features: Relay doesn't offer international wires, venture debt integrations, or treasury management tools.
Both banks are FDIC-insured through partner banks (Evolve Bank & Trust for Mercury, Thread Bank for Relay) and offer mobile apps with solid reviews. Mercury is the stronger choice for funded startups that need sophisticated cash management and international capabilities. Relay wins for bootstrapped LLCs, freelancers, and small teams that want unlimited free accounts and straightforward bookkeeping without monthly fees.
Practical context: state-specific filing fees — see state-specific filing fees. To understand the underlying step both tools handle, see how the underlying process works.
Pick Mercury when
Choose Mercury if you're a funded startup, plan to accept venture debt, need international wire capabilities, or want advanced treasury features and integrations with payroll, accounting, and spend management tools. Mercury is built for high-growth companies that need robust cash management.
Pick Relay when
Choose Relay if you're a solopreneur, freelancer, or small LLC that wants unlimited free checking accounts, built-in bookkeeping, and zero fees. Relay is perfect for businesses that organize finances by project or client and don't need international payments or venture-specific features.
Frequently Asked Questions
What's the main difference between Mercury and Relay pricing?
Both Mercury and Relay offer $0 monthly fees for standard business checking. The difference is account structure: Mercury provides one primary checking account per entity, while Relay lets you open up to 20 free checking accounts, making it easier to separate finances by project, client, or expense category without paying extra.
Which bank is better for LLCs that don't have venture funding?
Relay is better for bootstrapped LLCs, solopreneurs, and small teams. It offers unlimited free accounts, built-in bookkeeping, and accepts a wider range of entity types including sole proprietors. Mercury is optimized for funded startups and may decline applications from businesses without venture backing or those in certain industries.
Does Relay support international payments like Mercury?
No. Relay only supports domestic ACH transfers and domestic wires. Mercury offers both domestic and international wire transfers, multi-currency support, and foreign exchange capabilities, making it the better choice for LLCs with international clients, vendors, or contractors.
Can I switch from Mercury to Relay (or vice versa) after opening an account?
Yes. Both are digital banks, so switching involves opening a new account, updating payment methods and direct deposits, and transferring your balance. Relay's multi-account structure can make migration easier if you want to keep old and new accounts open during the transition. Neither charges early closure fees.
Which bank has better reviews and customer support?
Mercury has strong reviews (4.6+ on Trustpilot and G2) and offers dedicated account reps for funded companies. Relay also scores well (4.5+ on G2) and provides email support with community resources. Mercury's support is more hands-on for growth-stage businesses, while Relay's is solid but more self-service.
Authoritative Sources
- https://mercury.com/
- https://mercury.com/pricing
- https://relayfi.com/
- https://relayfi.com/pricing
- https://www.trustpilot.com/review/mercury.com
- https://www.g2.com/products/relay-relay/reviews
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