The Senate is due to release their own plan this week so all this could be thrown on its head.
This, plus the house taking it up on the floor. That said, I wouldn't expect very significant changes. As we all know, much in Washington is agreed upon behind closed doors, and with the Republicans leading all house of congress, plus the White house, I imagine that the overall framework has all been agreed upon. Off the top of my head, here are the things that I could see changing:
a) the $1M threshold for the 39.6% bracket being lowered to $600K to $800K.
b) a capped itemized deduction for state and local taxes being added back in (maybe $10,000 like the property taxes, or maybe a non-inflation adjusted pool of $20K for all SALT including property taxes)
c) further tweaks to the bracket thresholds (possibly raising the top of the 12% bracket)
d) phase in of the corporate cuts over six years (possibly immediate cut to 30% with further 2% reduction each of the following five years)
e) increase in the new Standard Deduction (already published IRS tables for 2018 indicate a MFJ standard deduction of $13,000; only in Washington and with our idiot media can we be talking for days about $24,400 being a doubling of $13,000 without anybody blinking an eye)
I think the following are pretty well set:
a) four brackets at 12, 25, 35 and 39.6
b) the doubling of the standard deduction and elimination of personal exemptions
c) elimination of all itemized deductions other than mortgage, charitable, and capped SALT
I am interested to hear what other forum members think might be tweaked.