...
Thanks to the tax bill that President Obama signed a week ago, a large number of Americans will get a yearlong discount on their payroll taxes in 2011. Normally, employees pay 6.2 percent of their salaries, up to a $106,800 limit, toward Social Security. In 2011, that number will fall to 4.2 percent.
As a result, individuals could end up with a payroll tax savings of up to $2,136 in 2011, according to CCH, a tax information provider. Households with two wage earners who both make more than $106,800 will get $4,272, double the amount for individuals.
...
This is too big of a potential win for you to be anything but deliberate in your effort to put every last dollar to good use. No matter your goal, whether it is to pay off debt or save for a large purchase or retirement, it’s probably best to automate your efforts to collect the money.
...
http://www.nytimes.com/2010/12/25/your-money/25money.html