The actual amount of bonus depreciation varies from year to year, but it is offered on top of the maximum allowable Section 179 expensing limits and standard first-year depreciation. Bonus depreciation cannot be taken on property that is required to use the Alternative Depreciation Schedule, but it is exempt from alternative minimum tax (AMT) adjustments. Bonus depreciation is classified as a Section 1245 depreciation deduction when disposing of an asset, and is subject to recapture as ordinary income.
Investment dictionary. Academic. 2012.