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Mercury vs Brex
A detailed comparison to help you choose between Mercury and Brex.
Last reviewed:
| Feature | Mercury | Brex |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Free Tier | Yes | Yes |
| Monthly Cost (Solo) | $0 | $0 |
| Target Audience | solopreneurs, startups | startups |
| Verified | No | No |
| Solo-Friendly | Yes | Yes |
| Open Source | No | No |
| Editorial Rating | 4.5/5 | 4.3/5 |
| Categories | Finance | Finance |
| Key Features | Business checking and savings, Corporate cards, Wire and ACH transfers, Treasury management, Venture debt | Corporate credit cards, Expense management, Bill pay, Travel booking, Budget controls |
| Free Tier Quality | excellent | good |
Pricing Breakdown
Mercury
Mercury: free (checking, savings up to 4% APY). Plus: $35/month (higher APY, premium support). Pro: custom. No minimum balance.
Brex
Essentials: free. Premium: $12/user/month. Enterprise: custom. Cards: no annual fee.
Integration Overlap
Shared Integrations (3)
QuickBooksXeroGusto
Only in Mercury (5)
BrexRampStripePlaidZapier
Only in Brex (5)
NetSuiteSlackExpensifyRipplingWorkday
Use Case Fit
Mercury
- * Startup business banking
- * Treasury and cash management
- * Team expense management
- * International wire transfers
- * Automated accounting integration
Brex
- * Startup corporate spending
- * Employee expense management
- * Vendor bill payments
- * Business travel booking
- * Budget control and policy enforcement
Mercury
Pros
- + Best banking UX for startups
- + No fees on most features
- + High-yield treasury (5%+)
- + Developer-friendly API
Cons
- - Not a traditional bank (fintech)
- - Limited physical banking
- - Customer support can be slow
- - FDIC coverage via partner banks
Brex
Pros
- + No personal credit check or guarantee
- + Higher credit limits for startups
- + Excellent rewards for SaaS/tech spend
- + AI auto-categorization
Cons
- - Requires $50K+ in business bank account
- - Premium features need Enterprise plan
- - Limited to US companies
- - Rewards recently reduced
Editorial Verdict
Mercury takes the lead for solo founders — it offers better value and is explicitly solo-friendly. Brex may still be the right pick if you need deep Finance features or plan to scale to a larger team.
Sarah Chen
Editor-in-Chief