Here are some quick numbers for a family of four, earning $100K, filing married jointly and using the standard deduction. I don't have anything in here for the tax credits.
2018 standard deduction for married jointly - $24,000
2017 standard deduction for married jointly - $12,700
2018 personal exemptions - $0
2017 personal exemptions - $4,050 per person
2018 tax brackets:
10% up to $19,050
12% between $19,051 and $77,400
2017 tax brackets:
10% up to $18,650
15% between $18,650 and 75,900
If I did my math correctly, a family of four, earning $100,000 would have paid $9,733 in 2017 and $8,739 in 2018.
The incremental tax per exemption lost is $608 ($4,050 x .15). So a family of five would have still saved taxes under the 2018 structure. (2017 liability of 9,733 minus $608 = $9,125). A family of six would have paid an additional $222 in 2018 under the new rate structure.
Under this scenario, in order for the taxes to double in 2018, I believe this family would have to have 11 children plus the two parents (their tax liability in 2017 would have been approximately $4,300).
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Agree x 2
Last edited: Feb 12, 2019