Revenue decreased $2.8 billion from the fourth quarter of 2011 to $468 million in the fourth quarter of 2012, due largely to higher representations and warranties provision and lower servicing income, driven by less favorable MSR results, net of hedges. This was partially offset by higher core production income. The MSR results, net of hedges, included the previously described MSR valuation adjustment related to MSR sales.
Excluding the impact of correspondent channel originations, CRES direct originations increased 42 percent and core production revenue increased $472 million in the fourth quarter of 2012 from the year-ago quarter primarily due to higher margins on increased volume of direct originations.
Representations and warranties provision was $3.0 billion in the fourth quarter of 2012, compared to $264 million in the fourth quarter of 2011, an increase of $2.7 billion. The fourth-quarter provision included $2.5 billion for representations and warranties and provision of $0.5 billion for obligations related to mortgage insurance rescissions related to the Fannie Mae settlements.
The provision for credit losses in the fourth quarter of 2012 decreased $516 million from the year-ago quarter to $485 million, driven by improved portfolio trends in the non-purchased credit-impaired home equity portfolio and reserve reductions in the purchased credit-impaired (PCI) home equity portfolio due to the improved home price outlook.Noninterest expense increased $1.1 billion from the fourth quarter of 2011 to $5.6 billion, primarily due to $1.1 billion of expense related to the IFR acceleration agreement. In connection with this agreement, the company agreed to a cessation of the IFR process and to make a $1.1 billion payment to a fund established for the benefit of borrowers pursuant to a plan agreed to by the Office of the Comptroller of the Currency and the Board of Governors of the Federal Reserve System. The company will also provide $1.8 billion in borrower assistance, including loan modifications and other foreclosure prevention actions. In addition, there was an increase in default-related servicing expenses from the year-ago quarter and an increase in mortgage-related assessments, waivers and other similar costs associated with foreclosure delays, including a provision of $260 million for compensatory fees in connection with the Fannie Mae settlements. These increases were partially offset by $800 million in lower litigation expense from the fourth quarter of 2011.