From
Fox Business:
President Trump proposes eliminating income tax entirely, suggesting tariff revenue could replace traditional taxation in ambitious economic overhaul plan.
www.foxbusiness.com
What follows is an economic argument, not a political argument. Please use the politics sub forum to make a political reply.
Eliminating income taxes and replacing them with revenue from tariffs essentially converts our tax system to a consumption tax (like a sales tax). Economicly, consumption taxes are less efficient as they directly impact consumer demand. Tariffs are generally passed on to the consumer and raise the price of imported goods. Some consumers are then priced out of the market or substitute with cheaper products. Tariffs reduce demand especially for products with high elasticity. Tariff income may thereby be reduced.
A fundamental economic principle is that consumers and suppliers respond to incentives (or disincentives). Tariffs may cause a a shift back to domestic products or a degree of onshoring. This activity may further reduce income from tariffs.
Replacing the income tax with tariffs may be a more optimistic idea than it actually turns out to be. And either way, Americans are still paying a tax. Arguably, tariffs impact lower income Americans harder in terms of disposable income.