Your credit history can affect whether you're approved for a loan, credit card, or even an apartment rental, as well as the interest rate you may be charged. That's why checking it regularly is a good idea, and it doesn't cost anything: according to the Federal Trade Commission (FTC), you can request your free credit report from each of the three major credit bureaus once a week.

The only authorized website for obtaining these reports is AnnualCreditReport.com, where you can request all three at the same time.

Checking your reports regularly can be worthwhile: an error could increase the cost of a loan or lead to a denial, while an unfamiliar account may be an early sign of identity theft.

Equifax, Experian, and TransUnion use the same centralized system for free reports. You can request yours:

To verify your identity, you'll be asked for your name, address, Social Security number, and date of birth, along with questions that only you are likely to know the answers to.

The three credit bureaus have made permanent the program that allows you to check each report for free once a week. In addition, federal law requires each bureau to provide you with a free copy every 12 months if you request it.

You're also entitled to an additional free report in certain situations: if you were denied credit, employment, insurance, or housing because of information in your report, and request it within 60 days; if you're unemployed and plan to look for work; if you receive public assistance; or if you were a victim of fraud.

If you find an error, file a dispute with the credit bureau and the company that reported the information. If you suspect someone is using your information, report it at RobodeIdentidad.gov.

Beware of imitators: some websites advertise «free» reports in order to sell you other services. The official free reports are available only through AnnualCreditReport.com.

Source: Federal Trade Commission (FTC), Free Credit Reports. This information is general and does not replace advice on your specific situation.