To build your business credit score without using your personal credit, you’ll need a business credit card that doesn’t report card activity to your personal credit report. Business cards issued by Citi, Wells Fargo, and U.S. Bank will not show up on your personal credit report, but many other card issuers report at least some of your business card activity to the consumer bureaus. For that reason, the CitiBusiness / AAdvantage Platinum Select Mastercard could be a great choice.