Guaranty Financial Group in Austin swung to a third-quarter loss of $162 million, in part because of continuing trouble with credit quality.

The $15.4 billion-asset company had earned $21 million a year earlier.

The loan-loss provision jumped 310% from a year earlier but fell 21% from the second quarter, to $78 million.

Three noncash charges contributed to the loss — an $85 million writedown on deferred income tax assets, a $53 million other-than-temporary impairment charge on a mortgage-backed security, and a $14 million impairment charge on goodwill and intangible assets from Guaranty's insurance agency.

Guaranty's ratio of nonperforming assets to loans and other real estate owned increased 107 basis points from the second quarter, to 5.02%.

The company raised $562 million of capital during the quarter, bringing the total added this year to about $600 million.

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