Brex vs Mercury: cards and spend or banking first?

Brex started with the corporate card and added banking. Mercury started with banking and added a card. Google pairs them because startups pick one as the main account.

Alexia M.Comparisons and market guides editor

Published: 9 June 2026
Updated: 4 November 2026
Reading time: 2 min read

"Brex vs Mercury" and "Brex vs Ramp vs Mercury" both sit high in Google's suggestions. Startups ask because they want one main financial tool and both companies now offer cards and accounts. Their roots still show. Brex figures were read on its pricing page on 1 November 2026, Mercury's on 4 November 2026.

What each is built around

	Brex	Mercury
Started as	Corporate card	Business bank account
Pricing	Essentials $0 per user; Premium $12 per user a month	$0 base; Plus $29.90; Pro $299 a month
Card	Charge card, limits based on your finances	IO credit card, 1.5% cash back
Strength	Spend policies, receipts, travel, approvals	Free wires, multiple accounts, treasury

When Brex is the better main tool

Your problem is spend. Thirty people travel, buy software and run ad accounts, and finance spends days chasing receipts. Brex's policies, approval chains and receipt matching are built for that. Premium's per-user price adds up, so count cardholders before you upgrade.

When Mercury is the better main tool

Your problem is money movement. You pay vendors, contractors and payroll by ACH and wire, you hold runway in treasury, and five people need cards. Mercury's account covers it with no per-user fees.

Both are US-dollar products. A card used in euros or pounds converts at the issuer's rate. A contractor in Brazil is paid by a converted wire. For a startup with a team spread across countries, the FX on payroll often costs more than any software fee.

Paying into the United States: the local rail

What	Detail
Local rail	ACH for batch payments; RTP and FedNow for instant transfers
Run by	Nacha for ACH; The Clearing House for RTP; the Federal Reserve for FedNow
Settlement	Same-day ACH within the business day, standard ACH the next; RTP and FedNow in seconds, 24/7, where both banks take part

Source: Nacha: Same Day ACH. Checked when this guide was last updated; the scheme's own page has the current figures.

Where Rivet fits

Rivet combines a multi-currency account with cards. Every plan includes unlimited digital cards with per-card limits, funded from your balance, so there is no credit application. Growth adds physical cards, EUR and GBP details, local payouts to 120+ countries and approvals for up to 10 members, at a flat $200 a month. Rivet is not a bank; regulated partner institutions hold the funds. See Cards and our Ramp, Brex and Airwallex card comparison.

Questions people ask

Should a startup use Brex or Mercury?

If the main pain is controlling team spend, start with Brex. If it is moving money and holding cash, start with Mercury. Many startups use Mercury for banking and Brex or Ramp for cards.

Does Brex charge per user?

Brex lists Essentials at $0 per user and Premium at $12 per user a month. Enterprise is custom.

Which is better for a company outside the US?

Both focus on US companies. Brex lists non-US entity support on Enterprise. Check eligibility before you apply.

Do I need both?

Not always. A small team that needs a few cards can manage on Mercury's card. A team with dozens of cardholders, travel and approvals usually wants dedicated spend software.

Sources

Written by

Alexia M.

Comparisons and market guides editor

Alexia compares the accounts, cards and payment tools companies weigh before they switch, and writes Rivet's market guides for founders in a specific country. Prices in Alexia's comparisons come from each provider's own pricing page on the date given in the article, rules come from the regulator or tax authority that sets them, and every source is listed at the end.