* The frequencies with which various itemized deductions, tax credits, and tax preference items
occur as certain percentages of income (Tables 9 and 10); and
The increase in the effective tax rate is primarily due to a decrease in tax preference items
such as income from bank-owned life insurance.
* Tax preference items
. For individuals, the proposal would replace the seven existing tax brackets with just three: 10%, 25% and 35%.
The Alternative Minimum Tax (AMT) is imposed on taxpayers whose tax deductions and tax preference items
reduce their taxable income below a specified level.
Two of the more common tax preference items
are accelerated depreciation and certain tax-exempt interest.
(1) Their taxable income is $135,000 (2) Their AMT adjustments to taxable income are 30,000 (3) Their tax preference items
total 57,000 $222,000 (4) Their exemption amount is $52,950 ($70,950-$18,000) ($18,000 = 25% x ($222,000-$150,000)) (52,950) (5) Their alternative minimum taxable income is $169,050 (6) Their tentative minimum tax is $43,953 The excess of the Ginsburgs' tentative minimum tax ($43,953) over their regular tax ($26,544) is $17,409.
at 430-32 (listing "tax preference items
that were added to the adjusted gross income base").
A case in point was a change proposed by the mining industry in the early 1990s to expand the AMT credit to include AMT that was attributable to permanent differences (tax preference items
) between regular tax and AMT.
Many tax preference items
(such as excess depletion allowances and interest on private activity bonds) result in permanent differences.
The AMT changes these tax benefits into "tax preference items
" which are in turn added back to a company's regular taxable income.
 Includes tax-exempt interest and tax preference items
subject to alternative minimum tax.
Tax preference items
, which include portions of deductions or exclusions from income, are added back to the taxpayer's taxable income in computing alternative minimum taxable income (AMTI), which is the basis on which taxpayers compute the tentative minimum tax.