These numbers have been rounded, for simplicity sake:
First $10k — 10% tax rate
$10k to $40k — 12% tax rate (plus $1,000 from previous line)
$40k to $86k — 22% tax rate (plus $4,600 from the previous two lines)
$86k to $164k — 24% (plus $15,000)
$164k to $210k — 32% (plus $33,000)
$210k to $523k — 35% (plus $48,000)
$523k and above — 37% (plus $158,000)