If you want to improve your credit score, a score from 300-850 that lenders use to determine whether you qualify for a loan and how much interest to charge you if you do, you’ll want to know your “reason codes.” These are 2-digit numbers that come with you credit score when you purchase it. Each bureau usually gives you four reason codes with their report, so get your score from each one for a total of 12. One wiki tutorial says that reason codes are listed in order of importance. Armed with that, The Mechanics Of Credit site decodes all the reason codes and prescribes solutions for each one. With this info and tactics, you should be able to boost your score a couple of points and save a bundle.