Brex vs Mercury
The ultimate side-by-side head-to-head analysis for 2026.
Short answer
- Price: not directly comparable — Brex is free tier available, Mercury is free.
- How to start: Brex is free tier available, Mercury is free.
These lines are generated from the pricing we track, not from a paid placement. We do not publish a quality score, because we do not have one we can stand behind. They cannot tell you which tool fits your workflow — the sections below are there for that. How we score tools.
Brex
Mercury
Category
Finance Tools
Finance Tools
Base Price
Free tier
Free
Public API
Yes
Yes
Mobile app
Yes
Yes
Open source / self-hostable
No
No
SSO (SAML)
Yes
No
Choose Brex if:
Funded startups managing distributed company spend.
Choose Mercury if:
Startups and remote companies that need a US business account.
Brex: pros & cons
- Cards with controls and automated expenses
- Good integrations with accounting tools
- Built for fast-growing companies
- Eligibility requirements exclude small businesses
- Focus has shifted upmarket over time
- US-centric
Mercury: pros & cons
- No monthly account fee
- Clean interface and solid API
- Designed around startup needs
- US-focused; availability varies
- Not a lender for most customers
- Support is online only
Our verdict on Brex
Solid for its target customer. Smaller businesses often find they no longer qualify.
Our verdict on Mercury
A good default for startup banking. Keep expectations realistic about credit and lending.