The Importance of Your Credit Before deciding on what terms lenders will offer you on a loan (which they base on the "risk" to them), they want to know two things about you: your ability to pay back the loan, and your willingness to pay back the loan. For the first, they look at your income-to-debt obligation ratio. For your willingness to pay back the loan, they consult your credit score. The most widely used credit scores are FICO scores, which were developed by Fair Isaac & Company, Inc.  Your FICO score is between 350 (high risk) and 850 (low risk).