Dan_Keys comments on A sliding scale for donation percentage

[Dan_Keys]

The appendix of the ebook (pdf, p. 218 & 221) suggests structuring it like tax brackets, giving (as a percentage of adjusted gross income):

1% of the first $81,000, 5% of the next $59,000, 10% of the next $180,000, 15% of the next $160,000, 20% of the next $1,520,000, 25% of the next $9,000,000, 33.3% of the next $42,000,000, and 50% of the remainder