Revenue Procedure 2011-21 provides the depreciation deduction limitations for owners of passenger automobiles (including trucks and vans) first placed in service during calendar year 2011 and the amount to be included in income by lessees of passenger automobiles first leased during calendar year 2011. These depreciation deduction limitations and income inclusion amounts are updated annually pursuant to section 280F to reflect the automobile price inflation adjustments. Rev. Proc. 2011-21 also modifies Rev. Proc. 2010-18, to increase the depreciation limitations and lessee inclusion amounts for passenger automobiles first placed in service or leased in 2010 by taxpayers claiming the section 168(k) additional first year depreciation deduction pursuant to the Small Business Jobs Act of 2010.