In my opinion, the tax cut that has been benefiting the economy is the move away from zero percent interest rates. Lending to banks at below inflation is like a tax that goes directly to them. But when we keep on raising short term rates above inflation, that's going to be like a tax too, and I expect we will promptly get whiplash since the Fed doesn't know when to stop.
Maybe I am becoming a crank, because I feel Cassandra-ish, like major macroeconomic problems are so simple but nobody gets it. Feel free to explain why I am totally wrong.
https://data.bls.gov/timeseries/CES0000000001?output_view=ne...
Furthermore, to finance that tax cut, a lot of money is being borrowed. When government is out there shilling its bonds, this crowds out investment into corporate bonds and equity, depressing growth.