Senate Republicans last week agreed on a budget resolution allowing a $1.5 trillion increase in the federal deficit over the next 10 years from tax legislation. This resolution paves the way for 51 Republican Senators to enact mammoth tax cuts by September 30, 2018.
As the centerpiece of these tax cuts, President Donald Trump has proposed to lower the corporate tax rate to 15% from 35%. However, despite the deficit cushion of $1.5 trillion allowed by last week’s budget resolution, a 15% rate is totally unrealistic.
Cutting the corporate tax rate to 15% would cost the U.S. Treasury $3.7 trillion over 10 years. But that cost cannot come close to being offset by repealing existing tax preferences, which all will be fiercely defended by special interests. A realistic legislative target would be a corporate tax rate of 25%. And under Senate rules this rate would have to expire after 10 years because it creates future budget deficits.
Let’s do the math on corporate and individual rates, together with optimistic assumptions about limiting existing tax preferences. The numbers are based on dynamic estimates from the nonpartisan Tax Policy Center, unless noted otherwise.
Donald Trump has finally put out a detailed economic plan. Authored by Peter Navarro (an economist at the University of California-Irvine) and Wilbur Ross (an investor), the plan claims that a President Trump would boost growth and reduce the national debt. But its projections are based on assumptions so unrealistic that they seem to have come from a different planet. If the United States really did adopt Trump’s plan, the result would be an immediate and unmitigated disaster.
At the heart of the plan is a very large tax cut. The authors claim this would boost economic growth, despite the fact that similar cuts in the past (for example, under President George W. Bush) had no such effect. There is a lot of sensible evidence available on precisely this point, all of which is completely ignored.
The Trump plan concedes that the tax cut per se would reduce revenue by at least $2.6 trillion over ten years – and its authors are willing to cite the non-partisan Tax Foundation on this point. But the Trump team claims this would be offset by a growth miracle spurred by deregulation.