Corporate cards reward spending in one of two structures: a flat cashback rate on every purchase, or a points system with category multipliers. Interchange fees paid by merchants fund both models, but the two distribute that revenue differently. This comparison covers five corporate cards — Mercury, Brex, Ramp, Slash, and Rho — across structure, fees, eligibility, and constraints.
How the Reward Mechanics Differ
Every card swipe generates an interchange fee, paid by the merchant to the card network and shared with the issuer. Points-based programs allocate a larger share of that fee to categories with higher interchange, such as travel and rideshare, while paying a lower baseline rate on other spend. This produces multipliers like “4x on travel” alongside a 1x baseline.
Flat cashback programs instead apply one percentage rebate to all spend, regardless of category. This removes the step of tracking which purchases fall into bonus categories or converting points into a redemption value. The rebate is typically credited as cash to the business account rather than as a points balance.
2026 Corporate Card Rewards Comparison
| Card | Reward Model | Top Category Multiplier | Baseline Rate | Redemption Form |
|---|---|---|---|---|
| Mercury | Flat cashback | None (single rate) | 1.5% | Cash to account |
| Brex | Multiplier points | 7x rideshare | 1x | Points: travel, transfer, or statement credit |
| Ramp | Flat cashback | None (single rate) | 1.5% | Cash to account |
| Slash | Flat cashback | 2% on Meta ad invoices (Pro tier) | 1.5% | Cash to account |
| Rho | Tiered cashback | None (volume-based tiers) | Up to 2% by tier | Cash to account |
How Each Card’s Rewards Program Is Structured
Mercury applies one flat rate — 1.5% — to every transaction, with no category tiers and no spending caps. The rebate is deposited into the business’s Mercury account as cash rather than accumulated as points.
Brex uses a multiplier structure: 7x on rideshare, 4x on travel booked through the Brex portal, 3x on restaurants, and 2x on recurring software, with a 1x baseline on everything else. Points can be redeemed for travel, transferred to airline partners, or converted to statement credit.
Ramp pays a flat 1.5% cashback on all purchases, with no bonus categories. The card is paired with Ramp Intelligence, a spend-monitoring feature built into the same platform, separate from the reward calculation itself.
Slash offers a flat 1.5% rebate on standard accounts and 2% for accounts on its Pro tier, which carries a $25 monthly fee. A separate program credits 1% on Meta ad invoice payments processed outside the card network.
Rho scales its cashback rate in tiers, up to 2%, based on the business’s spending volume and payment frequency. The card runs on the Mastercard World Elite Business network, which layers in Mastercard Easy Savings discounts independent of the cashback rate.
Fees and Pricing Mechanics
Mercury does not charge an annual or monthly fee for its card; the 1.5% cashback applies without a subscription cost attached. Brex likewise carries no annual card fee, though its highest point multipliers are tied to qualifying for “Brex Exclusive” status rather than a paid tier.
Ramp does not charge a card fee, and its 1.5% rate applies uniformly regardless of account size. Slash’s baseline 1.5% rate is free, but the 2% Pro rate requires a $25 monthly fee, meaning the incremental 0.5% must exceed $50 in monthly spend before the fee is offset. Rho does not charge a card fee; its cashback tier is instead a function of transaction volume rather than a subscription charge.
Limits, Eligibility, and Availability
All five cards are charge cards issued against a business’s cash balance or underwriting profile rather than a traditional revolving credit line, and all currently operate within the United States. Mercury requires an underlying Mercury bank account and bases card limits on the company’s cash position.
Brex requires a business banking relationship with Brex and sets limits based on cash balance and spend history; Brex Exclusive status, which unlocks the highest multipliers, requires meeting additional funding or revenue criteria. Ramp requires a company bank account connection for underwriting and sets limits from cash flow data rather than a personal credit check.
Slash’s card program is built around its Pro tier for the 2% rate and the Meta ad invoice rebate; both require an active Slash business account. Rho ties its cashback tier and card limit to verified spending volume, positioning it toward companies with established, recurring transaction activity rather than early-stage spend.
Tradeoffs and Constraints
Points and cashback differ in the oversight they require. Points programs can produce a higher effective return on categories with high multipliers, but realizing that value depends on how the points are redeemed — travel and partner transfers typically return more per point than statement credit. This redemption step adds a recurring task that a flat cashback rebate does not require.
Reward concentration is a separate constraint. A card with a strong multiplier on travel returns little value to a business whose spend is concentrated in categories like advertising or cloud infrastructure, since that spend falls into the 1x baseline. A flat-rate card applies the same percentage regardless of category, which removes this mismatch but also removes any category-specific upside.
Liquidity is the third constraint. Cashback is credited as usable cash, while points are restricted to the issuer’s redemption options — travel bookings, transfers, or statement credit at a set conversion rate. For a company tracking cash runway, the cashback rebate is fungible in a way that an unredeemed points balance is not.
See also: Best Corporate Cards for Startups, Top Corporate Cards with No Personal Guarantee
