Mercury vs Brex vs Relay: A Decision Framework

1. Country profile in tightened-review tier (Pakistan, Nigeria, Vietnam, Indonesia, Bangladesh)? → Wise Business primary. Mercury/Relay/Brex as stretch attempts.
2. Country profile in mid-tier (India, UAE, Brazil, Philippines)? → Mercury primary. Relay or Wise as backup.
3. Country profile in high-tier (UK, EU, Singapore, Japan)? → Mercury primary (~85-95% approval). Brex or Relay as needed.
4. Revenue under $50K annual? → Mercury or Wise.
5. Revenue $50K-$100K annual? → Mercury primary. Add Relay if you want sub-accounts.
6. Revenue $100K+ annual? → Brex becomes feasible. Many keep Mercury and add Brex for credit lines.
7. VC-funded ($1M+ raised)? → Brex is the right primary. They love funded startups.
8. Running multiple LLCs? → Relay sub-accounts shine. Up to 20 sub-accounts under one LLC structure.

• Broadest non-resident approval rate (~70% across most country profiles)
• Treasury yield on idle balances (~5% APY via T-bill sweep)
• Native Stripe integration
• API for automation
• Mercury IO Cards (debit + 1.5% cashback)
• FDIC partner coverage up to $5M

• You need high-limit business credit cards ($50K-$500K limits)
• You have $100K+ annual revenue or VC funding
• You spend heavily on ads (Meta, TikTok, Google) and need credit lines
• You want premium expense management (Brex's UX is best-in-class for this)

• You run Profit First budgeting (separate buckets for tax, payroll, owner draw, etc.)
• You operate multiple LLCs and want consolidated banking
• You want sub-accounts per client (for agency businesses)
• Mercury rejected you and you want a chartered US bank alternative
• You value FDIC coverage over speed

Common multi-bank setups: Mercury primary + Wise for international clients. Mercury primary + Brex for credit lines. Relay primary (multi-account) + Wise for cross-border payments. Single-bank setups work fine at smaller scale but most founders past $100K revenue open at least two for redundancy and feature stacking.