This question is most often asked by new start-up operations. Typically the score is low due to the length of time in business. Although you may be paying your bills timely, history from all credit reporting agencies including D&B, who has been doing this since 1845, shows a strong tendency for companies to fail within the first 5 years of business.
And it’s not just credit that places great emphasis on longevity, just think of the last time you looked at someone’s resume that had changed jobs every 6 months, they were not nearly as employable as the person who stayed on the job for 5 yrs or more.
Of course there are other factors, such as collection activity or slow payment trends that will seriously affect your score.