Reply #13: If a family of 4 had income of just $100k

[LiberalFighter]

their federal tax would only be $10,650 if they took the standard deduction.

Taxable income would be $73,600

($1,700) The first 17k would be taxed at 10%
($7,800) Between 17k and 69k would be 15%
($1,150) The remaining at 25%
($10,650) Total Taxes

If they itemized their deductions I imagine that the normal taxpayer would be able to have about an additional $2,000 in deductions which would lower their amount to nearly $9,000.

Not including an itemized return this taxpayer would have an effective tax rate of 10.65%.

10.65% on $100k

Not 25%

Not 33%