First of all, the estimate of how much charitable giving would increase in the form of private company shares and real estate was based upon the U.S. experience. In the United States currently, gifts of appreciated capital property are exempt, which includes listed securities, private company shares, and real estate. Based upon the U.S. experience, roughly 20% of the total gifts of appreciated capital property come in the form of private company shares and real estate. The estimate of that range, which is around $200 million, comes from the fact that gifts of listed securities have been $1 billion a year. So the ballpark number is $200 million from these two asset classes.
Now, the tax revenue cost is based on a detailed analysis of the Department of Finance's annual tax expenditure report. That annual report provides the charitable donation tax credit for gifts of listed securities and the foregone capital gains tax. It covers the portion of those donations that comes from individuals and the portion that comes from corporations. A lot of individuals who have significant assets in the form of stock own them in a private holding company. They don't get a charitable donation tax credit for the holding company; they simply get a tax deduction from the taxable income.
I probably don't have authority to use his name, but he was a prominent individual who spent 30 years in the Department of Finance.