Millions of middle-class households may be facing higher taxes in 2010 because Congress has failed to extend tax breaks that expired on January 1, most notably a "patch" that limited the impact of the alternative minimum tax. The AMT, initially designed to prevent the very rich from avoiding income taxes, was never indexed for inflation. Now the tax is affecting millions of middle-income households, but lawmakers have been reluctant to repeal it because it has become a key source of revenue.
Without annual legislation to renew the patch this year, the AMT could affect an estimated 25 million taxpayers with incomes as low as $33,750 (or $45,000 for joint filers). Even if the patch is extended to last year's levels, the tax will hit American families that can hardly be considered wealthy -- the AMT exemption for 2009 was $46,700 for singles and $70,950 for married couples filing jointly.
Middle-class families also will find fewer tax breaks available to them in 2010 if other popular tax provisions are allowed to expire. Among them:
* Taxpayers who itemize will lose the option to deduct state sales-tax payments instead of state and local income taxes;
* The $250 teacher tax credit for classroom supplies;
* The tax deduction for up to $4,000 of college tuition and expenses;
* Individuals who don't itemize will no longer be able to increase their standard deduction by up to $1,000 for property taxes paid;
* The first $2,400 of unemployment benefits are taxable, in 2009 that amount was tax-free.
