How to check your credit score

You can get a free credit score online at CreditKarma.com. You can also check with your credit card company, since some (like Discover and Capital One) offer a free credit score as well as credit reports so you can conduct your own credit check.

Another way to check what's on your credit report—including credit problems that are dragging down your credit score—is to get your free copy at AnnualCreditReport.com. Each credit-reporting agency (Experian, Equifax, and TransUnion) may also provide credit reports and scores, but these may often entail a fee. Plus, you should know that a credit report or score from any one of these bureaus may be detailed, but may not be considered as complete as those by FICO, since FICO compiles data from all three credit bureaus in one comprehensive credit report.

Even if you're fairly sure you've never made a late payment, 1 in 4 Americans finds errors on their credit file, according to a 2013 Federal Trade Commission survey. Errors are common because creditors make mistakes reporting customer slip-ups. For example, although you may have never missed a payment, someone with the same name as you did—and your bank recorded the error on your account by accident.

If you discover errors, you can remove them from your credit report by contacting Equifax, Experian, or TransUnion with proof that the information was incorrect. From there, they will remove these flaws from your report, which will later be reflected in your score by FICO. Or, even if your credit report does not contain errors, if it's not as great as you'd hoped, you can raise your credit score. Just keep in mind, regardless of whatever credit-scoring model you use, you can't improve a credit score overnight, which is why you should check your credit score annually—long before you get the itch to score a home.