The dark side of refinancing

In December 2011, I reduced my home mortgage interest rate from 6.25% to 3.125%, which thanks to the commutative property of multiplication, reduced my home mortgage interest by 50% year-over-year. What I forgot to do, however, was reduce my tax withholding allowances for 2012, which increased the taxes I owe for 2012 by an amount equal to 1/3 of ... (more)

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