V. Increase and Extension of Bonus Depreciation
ØA. For property that would qualify for the 30% additional first-year depreciation under the Job Creation and Workers Assistance Act of 2002 the first year bonus depreciation rate is increased to 50% of the adjusted basis.  (The 50% is in lieu of 30%, not in addition to it.)
ØB. This generally applies to property acquired after May 5, 2003 and placed in service before January 1, 2005 (January 1, 2006 for long-term production property).
ØC. For "luxury automobiles", the limit on first year depreciation is increased from $4,600 to $9,200 (an amount that is not indexed), but bonus depreciation is not available where the auto is not used more than 50% for business purposes.
ØD. To provide an incentive for further investments and to prevent a mere windfall for previously agreed purchases, property will not qualify if there was a binding written contract for acquisition before May 6, 2003.
ØE. The basis of the property for further depreciation will be reduced by the bonus depreciation amount.
ØF. Bonus depreciation is deductible for both regular and alternative minimum tax.