The American Express Business Blue Plus is a credit card for small business owners. The card’s features include no annual fee, a 0% intro APR, and 2x Membership Rewards points on the first $50,000 in purchases each year.  You can also access the American Express Business App, which offers account management tools.  This card can be an excellent option for small business owners who want to earn rewards on their everyday expenses without paying an annual fee. But you’ll need a high credit score of at least 690 to qualify.