Amends Internal Revenue Code provisions relating to the tax deduction for donations of fractional interests in tangible personal property to: (1) permit donors to claim an increased deduction based upon the market value of subsequent gifts of fractional interests, (2) extend to 20 years the period in which donors of fractional interests must contribute their entire interest in donated property, and (3) require donors of fractional interests greater than $1 million to attach a statement of value obtained from the Internal Revenue Service (IRS) to their tax returns.