Members of the 850 Club can be broken into two groups. There are the super-knowledgeable tacticians trying to crack scoring algorithms, and the naturally prudent. Some are prepping for a loan. Others are just credit-score hobbyists. Paul Chua, 40, who works at San Carlos, Calif.-based Helix, a startup focused on personal genomics, is one of the tacticians.
Payment history is the largest component of your credit score. Making your credit card or loan payments on time is crucial in establishing your credit and maintaining a good score in the future. Payments that are more than 30 days late will start to hurt your score. At the very least, be sure to pay your bills no later than 30 days after the due date.
You do, if your name is on a credit account and the credit issuer reports to a credit bureau. A "credit account" means something that must be repaid, like a loan or credit card. Adults who don't have traditional credit accounts likely don't have credit reports. And minors likely won't have a credit report unless they're authorized users on an adult's credit card.
It’s a good idea to look into inquiries from companies whose names you don’t recognize. While it’s possible they could be from companies you’ve done business with (if they report under a different company name, for example), they could also indicate fraud like identity theft, which we mentioned can bring down your credit scores. You’ll want to dispute any errors you discover as soon as you can to avoid further damage. Not sure where to start? You can learn more about disputing an error on your credit report by reading this primer.