High-growth startups often burn cash at a rate that traditional credit card issuers find alarming. Because legacy banks evaluate creditworthiness based on profitability and debt-to-income ratios, they frequently deny or severely limit credit to the very companies that have just raised millions in venture capital. This “capital gap” means that a founder with $10 million in the bank might still be rejected for a basic business card because the company is not yet profitable.
Access to significant corporate credit is essential for companies scaling headcount and software infrastructure quickly. When credit limits are too low, finance teams must make frequent mid-cycle payments just to keep their cloud servers running, creating unnecessary operational friction. Brex addresses this by shifting the underwriting focus from profitability to a company’s total capital position and investor pedigree.
Understanding the partner bank and charge card structure
Brex provides corporate credit cards through a partnership with Column N.A., though it has historically used other banking partners like Emigrant Bank. The Brex card is a MasterCard charge card, which means the company must pay the balance in full every billing cycle. Unlike cards from traditional retail banks, there is no “minimum payment” or option to carry a revolving balance with interest.
The card is the entry point into the “Brex Operating System,” which includes a business deposit account and a sophisticated spend management platform called Brex Empower. By controlling both the flow of money (banking) and the spending of it (cards), Brex can offer higher credit limits and deeper visibility than a standalone card provider. This structure also enables the platform to offer “instant” card issuance, allowing teams to generate virtual cards for specific projects or vendors within seconds.
The platform is designed to handle global operations, supporting entities in multiple jurisdictions and cards in various currencies. This makes it particularly effective for startups with distributed teams. All spending is centralized in a single dashboard, where transactions are automatically categorized and matched to expense policies defined by the finance team.
How businesses access credit and manage spend in practice
Brex evaluates credit limits using a proprietary underwriting model that considers a company’s cash balance, funding history, and monthly burn rate. For venture-backed startups, Brex often sets limits based on a percentage of their recent funding round rather than their current bank balance alone. This allows companies to access 10x to 20x higher limits than they would receive from a traditional small business card.
The “Brex Exclusive” program is a critical component of the platform’s utility. To qualify for the highest reward rates, a company must agree to use Brex as its only corporate card. This “exclusivity” allows Brex to capture the full spending data of the organization, which it uses to refine its AI-driven expense management tools and policy enforcement.
Brex Empower, the platform’s core software layer, uses AI to automate many of the manual tasks associated with expense reporting. When an employee makes a purchase, the system can automatically flag if it violates a company policy (e.g., spending more than $50 on lunch) or if a receipt is missing. The system also supports “live budgets,” where managers can see how much a project has spent in real time, rather than waiting for the end of the month to review the card statement.
What it costs to use the Brex financial platform
Brex offers several tiers of service, starting with the “Essentials” plan, which has no monthly fee and includes core card and expense management features. There are no annual fees for the card itself, and no foreign transaction fees when spending internationally. This fee-free entrance is designed to capture startups as they are founded and keep them as they grow.
The “Premium” tier is a paid subscription (typically starting at $12 per user per month) that unlocks advanced features. These include custom approval workflows, more complex policy controls, and native integrations with enterprise-grade ERP systems like Oracle NetSuite or Sage Intacct. For large organizations, an “Enterprise” tier offers custom pricing and high-touch support services.
Brex earns revenue primarily through interchange fees—the small percentage a merchant pays for every transaction made on a card. This allows them to offer the basic platform for free while still funding a high-value rewards program. Because Brex captures a significant portion of the “spend” market for startups, their interchange volume is a major driver of their financial model.
How credit rewards and account eligibility are determined
The rewards structure of the Brex card is tailored to the spending patterns of high-growth technology companies. Under the “Brex Exclusive” tier, companies earn at one of the most aggressive rates in the industry: 7x points on rideshare, 4x on travel booked through the Brex portal, 3x at restaurants, 2x on recurring software subscriptions, and 1x on all other purchases.
Points can be redeemed for travel, gift cards, or cash back. More uniquely, Brex allows companies to redeem points for specialized business credits, such as Out-of-Home advertising, billboard placements, or billboard advertising credits. This alignment between rewards and business growth needs is a key differentiator from consumer-focused reward programs.
Eligibility for the Brex card is strictly enforced. The platform is generally not available to sole proprietors or side hustles. To be eligible, a company typically must be a U.S.-registered corporation (llc, c-corp, etc.) and meet one of several financial thresholds: at least $50,000 in a Brex deposit account, a recent venture capital funding round, or professional services status for certain established legal or medical firms. Those who do not meet these criteria are typically redirected to other card programs.
The constraints and risks of using a non-bank credit product
The primary constraint of the Brex card is the “all-or-nothing” nature of its eligibility. Because Brex shifted its strategy in 2022 to focus exclusively on funded startups and enterprise clients, thousands of small business accounts were closed. This pivot highlighted the risk of relying on a niche fintech provider that may change its target market or “de-risk” its portfolio based on venture sector trends.
Additionally, the “Brex Exclusive” requirement can be a limitation for businesses that want to diversify their spending across multiple cards to mitigate risk. If a company uses a secondary card for a significant portion of its spend, it loses access to the top-tier 7x rewards and some of the higher-end platform features. This creates a high level of “vendor lock-in,” making it operationally difficult to switch platforms later.
While Brex has expanded into banking products with its Business Account, it is still not a chartered bank. Its depository services rely on partnerships with institutions like LendingClub Bank. In the event of a banking partner failure or a dispute between Brex and its partners, access to cash or credit lines could be affected. While FDIC insurance protects the underlying deposits, the operational complexity of a fintech-bank partnership can result in delays during periods of extreme market stress.
Finally, the dynamic nature of credit limits means that spending power is not guaranteed. If a startup experiences a sudden “down round” of funding or a significant drop in its cash reserves, Brex can—and will—automatically reduce the corporate credit limit. This can create a “limit-tightening” effect exactly when a company is struggling to manage its runway, adding additional pressure to the organization’s finance team.
See also: Brex Banking Review, Ramp Corporate Card Review
