Brex vs Ramp vs Amex: Best Card for Ad Spend
Brex and Ramp aggressively target media-buying agencies because Meta ad spend is exactly the kind of high-volume, predictable charge they're built to underwrite. Both offer dynamic limits 10-50x higher than traditional business cards. But the rewards story is weaker than their marketing implies.
By Editorial Team · Media buyer research desk
Published May 18, 2026 · 7 min read · How we review
Rewards: Amex still wins by a lot
Brex earns 7x on rideshare, 4x on travel through Brex, 3x on restaurants, and 1x on everything else — including ad spend. Ramp offers 1.5% cashback on everything, full stop. Amex Business Gold's 4x on ad spend = roughly 8% transfer value. Brex and Ramp's 1x / 1.5% on Meta is a fraction of that. On rewards alone, neither is competitive with Amex for advertising.
Where Brex and Ramp actually win
Credit limits. Brex routinely approves agencies for $250K–$1M+ limits based on bank balance and revenue, no personal guarantee. Ramp similar. Amex charge cards flex but the limit feels softer until you've established 6+ months of high spend. If your bottleneck is a $50K limit choking your ad scaling, Brex/Ramp solve that immediately.
Spend controls and accounting
This is where Brex and Ramp earn their place. Per-employee virtual cards, real-time spend caps, automated receipt matching, native QuickBooks/Xero sync. Amex has improved here but is still 2-3 years behind.
The real stack
Most well-run agencies use both: Amex Business Gold for points on the first $150K of ad spend per year, Brex or Ramp for overflow at scale and for team expense management. You don't choose; you combine.
Net-30 vs revolving
Brex and Ramp are pay-in-full (net-30 or daily). Amex Gold and Platinum are charge cards (also no revolving). Chase Ink Preferred and Venture X Business are revolving (you can carry a balance, though you shouldn't). If you need to float ad spend 60+ days, only a revolving card works.
Takeaway
Use Amex for the rewards, Brex or Ramp for the limit and the controls. Treating it as either/or leaves money on the table.