A donor-advised fund is a useful tool for an investment portfolio that act as charity savings account until the donor is ready to disperse the funds to a charity of his choice.
"Donor-advised funds have surged in popularity over the years, and many tax lawyers, accountants and financial planners enthusiastically recommend them as a tax-efficient, highly convenient and remarkably simple charitable-giving vehicle.
"With a typical fund, you can make your donation in the current year and take a tax deduction for that year even if you don’t decide which charities should get the money until future years. Meanwhile, the money gets invested and can grow, tax-free."--Tom Herman, The Wall Street Journal