Mercury vs Brex Banking
Choose Mercury if you want business checking and savings with fixed-price upgrades for invoicing and finance workflows; choose Brex Banking if you want treasury access without a deposit minimum and a platform that combines banking, cards, spend management, and travel. Both publish a free starting plan, but their paid plans and treasury eligibility differ.
Last updated October 24, 2026.
At a glance
| Dimension | Mercury | Brex Banking |
|---|---|---|
| Paid-plan pricing | Plus from $35/month; Pro available | Premium $12/user/month; Enterprise custom |
| Treasury eligibility | $250,000 Mercury balance and eligibility requirements | No minimum treasury deposit |
| Published FDIC coverage | Up to $5 million through partner-bank sweep networks | Up to $6 million in Vault through program banks |
| Treasury withdrawals | Same day for an eligible fund, subject to cutoff | As quickly as one hour during stated business hours |
| Free starting plan | $0/month for business banking essentials | Essentials at $0/user/month |
| Invoicing | Unlimited invoices; recurring invoices on paid plans | Branded and recurring invoices |
| International payments | Non-USD international wires with 1% exchange fee | Payments in 30+ local currencies |
| Travel booking | Not published | Included on Essentials |
| Accounting integrations | QuickBooks Online, Xero, NetSuite | QuickBooks Online, Xero, Oracle NetSuite |
| Platforms | Web dashboard and mobile app | Web dashboard and mobile app |
| Support | Email or dashboard; priority support on paid plans | 24/7 support; named manager on Enterprise |
| Banking structure | Checking and savings through partner banks | Checking, Treasury, and Vault |
Scroll the table sideways to compare each row.
Which should you choose?
Choose Mercury if
- Businesses that prefer fixed monthly pricing for paid plans
- Teams that want checking and savings together
- Businesses that want unlimited invoices on a free account
- Eligible businesses with at least $250,000 seeking Mercury Treasury
Choose Brex Banking if
- Businesses seeking treasury access without a minimum deposit
- Teams that want travel booking alongside banking and spend management
- Businesses comparing a per-user paid plan
- Teams that want access to Brex Vault’s expanded FDIC coverage
The verdict
Mercury is the better fit when fixed monthly pricing and its checking, savings, and invoicing tools match your workflow. Brex Banking is the better fit when treasury access below $250,000, travel tools, or per-user pricing matter more. The deciding factors are your cash balance, the tools your team needs, and how paid-plan costs scale with users.
Mercury vs Brex Banking: common questions
- Which is cheaper, Mercury or Brex Banking?
- Mercury business banking starts at $0 per month, and Brex Essentials starts at $0 per user per month. For paid features, Mercury publishes fixed-price Plus and Pro plans, while Brex Premium costs $12 per user per month.
- Can I access treasury without a $250,000 balance?
- Brex publishes no minimum deposit for its Treasury account. Mercury requires at least $250,000 in deposits across accounts within one Mercury organization, plus other eligibility requirements, to qualify for Mercury Treasury.
- Are Mercury Treasury and Brex Treasury FDIC-insured?
- No. Mercury and Brex describe their treasury products as investments subject to risk, not FDIC-insured deposits. Their published expanded FDIC coverage applies to eligible deposits held through partner-bank programs, not treasury investments.
- How much FDIC coverage does each publish?
- Mercury publishes up to $5 million in FDIC insurance through its partner banks and sweep networks. Brex publishes up to $6 million for funds held in Vault through program banks. Coverage depends on the applicable program conditions.
- Which lets me move treasury funds faster?
- Brex says Treasury funds can move to checking as quickly as one hour between 8 a.m. and 3 p.m. ET on a business day. Mercury publishes same-day withdrawals for funds in an eligible money market fund, with a 3 p.m. ET business-day cutoff and partner processing times.
- Do both products offer invoicing and bill pay?
- Yes. Mercury includes unlimited invoices and bill payments with its business account and offers recurring invoices on paid plans. Brex publishes branded and recurring invoicing alongside integrated bill pay.
- Do Mercury and Brex Banking work with QuickBooks, Xero, and NetSuite?
- Both vendors publish integrations with QuickBooks Online, Xero, and NetSuite. Mercury specifies bank-feed imports for all three; Brex lists them among its integrations.
- Does either include travel booking?
- Brex lists travel booking on its free Essentials plan. Mercury does not publish travel booking as a feature of its business-banking plans.