Brex vs Mercury vs Ramp: Which platform fits your growing business?

Brex, Mercury, and Ramp show up in nearly every finance stack conversation for startups and growing companies — but they're not interchangeable. Brex built its reputation on high-limit corporate cards, Mercury is fundamentally a banking platform, and Ramp combines cards, expenses, AP, and accounting automation into one spend management system.

Choosing between them depends on whether you're solving for banking, rewards, or operational efficiency. This guide breaks down how each platform handles corporate cards, expense management, pricing, and company stage fit so you can pick the right tool for your team.

How Brex, Mercury, and Ramp compare at a glance

The table below highlights how the three platforms differ across pricing, features, and capabilities.

Next, we break down each feature to show how the platforms differ in practice.

How corporate cards and spend controls compare

Each platform approaches corporate cards differently, and the differences reflect their broader priorities.

Brex

Brex made its name offering high credit limits to startups, often based on your cash balance rather than personal credit history. The cards come with category-level controls and a points-based rewards program with category multipliers. Brex also charges $25 per trip when you book travel through their platform.

Mercury

Mercury's cards connect directly to your bank accounts. The IO card program offers 1.5% cashback, though you'll want to check the balance requirements. The spending controls are more basic, but they work fine if your main goal is having cards tied to your banking.

Ramp

Ramp's corporate cards give you control at the merchant, category, and vendor level. You can issue unlimited physical and virtual cards, set spending limits for employees or teams, and block purchases from specific merchants. Ramp offers cashback on purchases, and the money goes straight back to your company rather than into a complicated points system. For international teams, Ramp's Enterprise tier includes local currency cards.

Banking and treasury capabilities

All three platforms offer some form of banking or treasury, though the depth and focus differ.

Brex

Brex offers a business account with checking, a treasury investment account, and a vault feature providing up to $6 million in FDIC coverage through 24 partner banks. It's a solid banking option, though the platform's core strength remains cards and spend management rather than banking.

Mercury

Mercury built its entire platform around banking. You get checking accounts, savings accounts, and treasury management services. Through partner banks, Mercury offers FDIC insurance coverage up to $5 million, which is significantly higher than the standard $250,000 limit. The platform also pays competitive interest rates on idle cash, which matters when you're sitting on runway.

Ramp

Ramp offers treasury with a business account that earns interest on operating cash through FDIC-insured institutions,¹ plus an investment account for higher yields on idle cash.² There are no fees, minimum deposits, or transfer caps, and the treasury product handles cash management alongside the rest of the platform — cards, expenses, AP, and accounting all in one place.

Expense management and accounts payable features

Expense management depth varies significantly across the three platforms.

Brex

Brex offers solid expense management with budget controls, receipt matching, and AP capabilities. The platform handles core workflows well, though it lacks proactive policy enforcement and AI-powered automation. Brex has increasingly focused on enterprise and global features, which may be more than mid-market teams actually require.

Mercury

Mercury's expense tracking ties to card transactions, but it's not a dedicated expense management platform. You can categorize spending and pull basic reports. However, you won't find automated approval workflows, policy enforcement, or the kind of receipt matching that dedicated expense tools provide. For simple needs, Mercury's approach works. For growing finance operations, you'll likely outgrow it.

Ramp

Ramp's expense management enforces your spending policies before purchases happen, not after. The system uses AI to match receipts to transactions automatically, so you spend less time chasing employees for documentation. Beyond expenses, Ramp includes full accounts payable automation, procurement workflows, and accounting integrations that sync transactions directly to your general ledger.

Pricing structures and rewards programs

All three platforms offer free tiers, though what's included at each level varies.

Brex

Brex's Essentials plan is free and covers basic card and expense functionality. Premium costs $12 per user per month and unlocks features like advanced budgets and custom expense policies. The $25 per trip travel fee applies regardless of which plan you're on. Brex's points system requires understanding redemption tiers and transfer partners to get maximum value, which adds complexity for most finance teams.

Mercury

Mercury's core banking is free, and that's the main value proposition. The IO card program with 1.5% cashback requires maintaining certain balance thresholds. Treasury services and other features may have associated fees depending on your account type.

Ramp

Ramp's free tier includes corporate cards, basic expense management, and bill pay. The Plus tier costs $15 per user per month and adds advanced features like custom approval workflows, accounting automation, and priority support. Ramp offers cashback on purchases, with no point valuations or redemption tiers to figure out.

When Piñata switched from Brex to Ramp, their finance team saved 20 hours per month and improved receipt compliance to 95%.

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Brex vs Mercury vs Ramp: full comparison

Which platform fits different company stages

Your company's stage and priorities point toward different platforms.

Early-stage startups often choose Mercury because it consolidates banking and cards in one place. The free checking account and clean interface appeal to founders who want simplicity. As finance operations grow more complex, though, many teams find themselves adding other tools to fill gaps in expense management and AP.

Venture-backed, high-growth companies have historically chosen Brex for its high credit limits and startup-friendly underwriting. If you're scaling quickly and want significant credit capacity, Brex's cash-based credit limit approach can be attractive. The global capabilities also matter for companies expanding internationally.

Ramp works across all company stages. The free tier serves early-stage companies well, Plus scales with growing teams, and Enterprise handles complex, multi-entity organizations. When you're hiring your first controller, working with auditors, or facing requirements from banks and investors, you want more than cards and basic expense tracking. Ramp's combination of spend controls, automated workflows, and accounting integrations addresses what growing finance teams actually do day to day.

See why finance teams choose Ramp

When Piñata switched from Brex to Ramp, they saved 20 hours a month and pushed receipt compliance to 95%. That's the kind of shift that happens when your cards, expenses, AP, and accounting live in one platform instead of three. Whether you're an early-stage startup or a scaling enterprise, Ramp grows with you.

Try an interactive demo to see how Ramp works, or explore more customer stories from teams that made the switch.