This calculator models the expected utility of using a donor-advised fund vs. a taxable account for an altruistic investor.
Most of the default values used in this calculator are explained by the associated essay: Donor-Advised Funds vs. Taxable Accounts for Patient Donors
The default values for investment performance are derived from historical data from Meb Faber's book, Global Asset Allocation. Investment returns are net of inflation, and assume a real risk-free rate of zero. The numbers given are based on historical performance, which might not reflect future results.