In calendar 2017, total federal tax collections in constant December 2018 dollars were $3,407,503,740,000. In calendar year 2018, they were $3,330,470,000,000—a decline of $77,033,740,000 from 2017.For 2017 this site is saying $3,313B for 2017 in real dollars.
US Government revenue.com
Using this calculator I get $3,364B adjusted (2018) for 2017 not $3,407B.
I would say revenues were flat. Which may be the sweet spot on the Laffer curve.
Part of the reason could be one source is calculating revenue in 2017 dollars and another in 2018 dollars. Regardless, rise in revenue is not keeping up with the increase in spending. Not by a long shot.
I would say revenues were flat. Which may be the sweet spot on the Laffer curve.
Which would mean that additional tax cuts would result in reduced revenue?