BUYER'S GUIDE FIRST STEPS What is Your Credit Rating? When it comes to obtaining a mortgage at the best interest rate, your credit rating, also known as credit score, may be the single-most important piece of financial information. In fact, your credit rating goes a long way toward determining what interest rate you qualify for from your lender. Your credit rating is a number that is determined from information in your credit report. Credit ratings range from 300 to 850, depe