Advent International and GS Capital Partners VI Fund along with certain affiliates have inked a $3bn definitive merger agreement with Madison Dearborn Partners and Pritzker to acquire TransUnion, which provides information and risk management solutions in the US.

According to Advent, the deal is expected to complete by the end of first quarter or early second quarter of 2012.

TransUnion’s existing president and CEO Bobby Mehta and the rest of the firm’s leadership team will be retained with TransUnion, said the firm.

Advent managing director Chris Egan said that TransUnion will continue to deliver superior information and risk management tools both in the US and in key growth markets like Latin America.

Last year, the company had total debt of $1.6bn, according to public filings, and has plans to borrow $600m additional, according to a Standard & Poor Financial Service’s report, totalling the equity component of the transaction at nearly $800m, as reported by Bloomberg.

BofA Merrill Lynch and Deutsche Bank served as advisors to TransUnion while Latham & Watkins provided legal counselling.