3, 2008 (GLOBE NEWSWIRE) -- First Tennessee Bank N.A., a subsidiary of First Horizon National Corp. (NYSE:FHN), announced today that it has selected PHH Mortgage, a subsidiary of PHH Corp. MEMPHIS, Tenn., Sept. (NYSE:PHH), to streamline its retail ... A lower interest rate gives you less interest to deduct on your income tax, which may increase your tax payments and decrease your total savings from refinancing.