Like all Republicans in public office — and especially Republicans in public office who are fabulously wealthy or expect to be when they leave office — Donald Trump loves cutting taxes for the rich and for large corporations. As Kevin Drum notes, this has nothing to do with helping the American economy. This kind of politician just loves cutting taxes for the rich and for large corporations.
And as Drum further notes, the kind of things Trump does that are intended to nurture the economy fall into two categories: Things Democrats would do and things only Donald Trump would do. He does not do things other Republican leaders would do. It seems to me that the items in the "only Trump would do" group are mostly to appear "tough" and/or to punish those who do not show him the proper respect. Read Drum and read the article he links to.