The IRS recently published information about the non-taxability of unemployment benefits.
The American Recovery and Reinvestment Act of 2009 (or Stimulus Bill) has given individuals that are collecting unemployment benefits in 2009, the ability to exclude the first $2,400 of these benefits. The exclusion applies to each individual separately even for married couples filing. This exclusion applies only to benefits received in 2009, so this will not reduce the taxable wages for the 2008 year form 1040 that most people are filing currently. Further information can be found posted at the IRS website here.