Equifax, Inc. (NYSE: EFX) is primarily a consumer credit reporting agency, considered one of the "big three" in that business. It has a computer system that amalgamates financial and public record data from credit card companies and other sources into a summary of how quickly the consumer pays their debts. This information can then be reduced to a comprehensive three digit credit risk rating or "score". Reports are provided on private persons residing in the United States, Argentina, Brazil, Canada, Chile, El Salvador, Peru, Spain, United Kingdom, and Uruguay. Reports can be obtained on consumers in other countries through a series of relationships. 80% of Equifax's revenue is derived from its USA operation.
Equifax has also expanded into Commercial credit reports in direct competion with Dun & Bradstreet and Experian in the USA, Canada and the UK. Through affiliations they can obtain a credit report on any business in the world.

Like most computerized credit reporting agencies, Experian, Trans Union, and The Dun & Bradstreet Corporation, they now market their credit reports directly to consumers and businesses, in addition to their core business of providing the reports to potential creditors.

Equifax subcontracts out most of its consumer relations. Telephone disputes or requests are diverted to ICT, a Canadian company/vendor. Mail disputes or requests sent to its Georgia post office boxes are opened by another vendor, Innasource, scanned to a computer file and then electronically sent to a subcontract vendor either in Montego Bay, Jamaica, or in the Philippines. Equifax also outsources its software development offshore to India through Infosys, Tata Consultancy Services and CGI-AMS.

In the UK, Equifax also operates a consumer debt collection agency under its Westcott Credit Services brand (also Debt Enforcement Agency). Westcott carry out collection for UK utilities and cable companies, and acted on behalf of NTL following the collapse of Internet service provider Gio Internet.