The net operating loss carryforwards at June 30, 2014 and December 31, 2013 follow:

Table 121: Net Operating Loss Carryforwards and Tax Credit Carryforwards
		June 30			December 31
In millions		2014			2013
Net Operating Loss Carryforwards:
	Federal		$	1,066	$	1,116
	State			2,779		2,958
Tax Credit Carryforwards:
	Federal		$	154	$	221
	State			7		7

The federal net operating loss carryforward expires in 2032. The state net operating loss carryforwards will expire from 2014 to 2031. The majority of the tax credit carryforwards expire in 2033. All federal and most state net operating loss and credit carryforwards are from acquired entities and utilization is subject to various statutory limitations. It is anticipated that the company will be able to fully utilize its carryforwards for federal tax purposes, but a valuation allowance of $60 million has been recorded against certain state tax carryforwards as of June 30, 2014. ASU 2013-11, which was adopted as of January 1, 2014, requires entities to present an unrecognized tax benefit as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryover. If these tax positions were successfully challenged by a state, the state net operating losses listed above could be reduced by $60 million.

Examinations are substantially completed for PNC's consolidated federal income tax returns for 2007 and 2008 and there are no outstanding unresolved issues. The Internal Revenue Service (IRS) is currently examining PNC's 2009 and 2010 returns. National City's consolidated federal income tax returns through 2008 have been audited by the IRS. Certain adjustments remain under review by the IRS Appeals Division for years 2004 through 2008.

The Company had unrecognized tax benefits of $89 million at June 30, 2014 and $110 million at December 31, 2013. At June 30, 2014, $74 million of unrecognized tax benefits, if recognized, would favorably impact the effective income tax rate.

It is reasonably possible that the liability for unrecognized tax benefits could increase or decrease in the next twelve months due to completion of tax authorities' exams or the expiration of statutes of limitations. Management estimates that the liability for unrecognized tax benefits could decrease by $57 million within the next twelve months.

ASU 2014-01 was adopted effective January 1, 2014. Under this standard, amortization of investments in qualified low income housing tax credits is reported within income tax expense. Certain amounts for 2013 periods including income tax provision have been updated to reflect the adoption.