To score the benefits of eliminating trade deficit drag, we don’t need any complex computer model. We simply add up most (if not all) of the tax revenues and capital expenditures that would be gained if the trade deficit were eliminated. We have modeled only the impacts of implicit profits and wages, not any other economic aspect of the increased activity.
Trump proposes eliminating America’s $500 billion trade deficit through a combination of increased exports and reduced imports. Again assuming labor is 44 percent of GDP, eliminating the deficit would result in $220 billion of additional wages. This additional wage income would be taxed at an effective rate of 28 percent (including trust taxes), yielding additional tax revenues of $61.6 billion.
In addition, businesses would earn at least a 15% profit margin on the $500 billion of incremental revenues, and this translates into pretax profits of $75 billion. Applying Trump’s 15% corporate tax rate, this results in an additional $11.25 billion of taxes.
Emphasis is added by this author.
Addendum: Scott Sumner comments.