Business credit is what lets your company borrow, lease, and get vendor terms without your personal social security number or credit score carrying the risk. Without it, every loan application, equipment lease, or net-30 supplier account gets underwritten against your personal file instead, which caps how much capital your business can access and puts your own score on the line for business debt.
A business credit score also travels with the company, not with you. If you ever bring on a partner, sell the business, or just want a clean line between “my money” and “the business’s money,” a credit file that exists independently of your personal one is what makes that possible.