"A number of temporary tax provisions are scheduled to expire at the end of 2011. Notably, the temporary two-percentage-point reduction in the payroll tax rate for individuals was enacted, at the end of 2010, as a one-year temporary provision. Other provisions scheduled to expire at the end of 2011 include the Alternative Minimum Tax (AMT) 'patch,' as well as a number of previously extended temporary provisions known as 'tax extenders.' This report provides a concise overview of tax provisions scheduled to expire at the end of 2011. Table 1 below lists all provisions scheduled to expire at the end of 2011. CRS [Congressional Research Service] products providing additional information and analysis related to specific provisions are noted in footnotes to the tables and text. Some of these provisions, including the two-percentage-point payroll tax cut, were enacted as temporary measures during the 111th Congress. Other provisions, such as the tax credit for research and experimentation expenditures, have been extended numerous times as part of tax extender legislation. In addition to listing all provisions expiring at the end of 2011, Table 1 notes which provisions have previously been extended as part of a tax extender package."
CRS Report for Congress, R42105