The three main business credit bureaus — Experian, Equifax, and Dun & Bradstreet — all use different scoring systems and score ranges, so a “good” business credit score depends on which agency’s assessment you’re looking at. For instance, a good Paydex score from Dun & Bradstreet would be 80-100, while a good business credit score from Equifax would be 550 to 992.