n Example: John and Jane: Married filing jointly with a
taxable income of $75,000
n Tax liability in 2006
n (15100*10%)+[(61300-15100)*15%]+[(75000-61300)*25%]
    = (15100*10%)+(46200*15%)+(13700*25%)
    = 1510+6930+3425
    = $11,865
n Marginal tax rate:
n 25%
n Average tax rate:
n 11865/75000=15.82%