Rich Donors May Be Undeterred by Tax Caps on Charitable Gifts

In addition, he said many households at the lower end of the top brackets already effectively have the value of their deductions reduced to 26 percent or 28 percent by the alternative minimum tax, which was designed to limit the use of deductions and exemptions by the wealthy.

Minimum Tax
Between 1990 and 2001, a period when the minimum tax was increasingly capping deductions for six-figure income households, deductions for charitable giving grew at an annual rate of about 8.4 percent, according to a study by the Internal Revenue Service.