Amex Business Cards vs Personal Cards
Same Membership Rewards, business tools
The Business Gold, Business Platinum, and no-fee Blue Business Plus all earn Membership Rewards that pool with your personal Amex points into one balance. The Blue Business Plus is a standout free accumulator at 2x on everything, an excellent earner to feed a personal Gold or Platinum. See the Amex ecosystem guide.
Pay over time and no personal credit reporting
Many Amex business cards are charge or pay-over-time products with no preset spending limit, useful for lumpy business expenses. Like most business cards, they do not report routine activity to your personal credit, though you personally guarantee the account. The cash-back ones, such as the Blue Business Cash, earn statement-credit cash back rather than Membership Rewards.
How the Amex rules apply
Each Amex business card welcome bonus is still once per lifetime. The family rule that orders the Green, Gold, and Platinum is mainly a personal-card grouping, but co-branded families like Delta apply across personal and business, so run the pre-qualification pop-up before you apply.