Consumer insights and credit scoring company Equifax made its 18th acquisition this week. The Georgia-based firm purchased credit reporting agency and alternative data provider DataX.

The move is expected to promote financial inclusion for underbanked consumers by helping lenders expand access to credit. DataX’s alternative data stores complement Equifax’s core credit database, as well as specific services such as The Work Number, Equifax’s centralized repository of payroll data. Equifax will also benefit from DataX’s analytics and identity solutions, as well as credit reporting, ID verification, bank account verification, and custom risk services.

“Giving consumers fair access to credit has always been a key economic driver for upward mobility, and this acquisition will help more consumers gain access to credit and capital,” said Trey Loughran, president of United States Information Solutions at Equifax. “The combination of DataX’s data with Equifax’s unique and robust data assets will add more depth to consumer’s profiles and will help lenders expand borrowing options.”

As a part of the transition, the DataX brand and its 18 employees have been integrated into Equifax’s Banking and Lending Division. Other recent acquisitions in Equifax’s portfolio include ID Watchdog and Veda Advantage.

At FinovateFall 2011, Equifax showcased the benefits of the Equifax Complete features of its mobile app. Last week, the company teamed up with Thinking Capital to launch BillMarket, a solution that helps small businesses in Canada extend payment terms and increase their purchasing power. Earlier this year, Equifax appointed a new CTO, launched NeuroDecision technology for neural network modeling, and unveiled Lock & Alert, a service that helps consumers quickly lock and unlock their Equifax credit report.

Founded in 1899, Equifax is publicly traded on the NYSE under the ticker EFX. The company’s market cap sits at $15.2 billion.