One word that could describe Donald Trump's unexpected ascendancy to the presidency is – "revolt." Revolt against the "establishment." Revolt against the "status quo."
After all, status quo bureaucracies, tax rates, institutions, regulations, and narratives promised prosperity, yet the economy was mired in slow growth and many felt it was hard to get ahead. Reliably blue states tilted red, and the pendulum swung the other way.
Since 1993, the top federal tax rate on US corporations has been 35%, one of the highest in the world. This has forced US companies to expand overseas. Both sides of the political spectrum knew it was a problem, yet nothing was ever done.
Now the rate is 21%, and full expensing of business investment for tax purposes is law. These changes will boost the incentive to invest and operate in the US, leading to more demand for labor, which means lower unemployment and faster wage growth, as well. From an economic perspective, this is a revolution.
But there's more. We're referring to the new limit for state and local tax deductions. That change, combined with a larger standard deduction, will launch an overdue revolution in the policy choices of high tax states as well as the geographical distribution of business activity.
California's top marginal income tax rate is 13.3%. Under the old tax system, tax payers who itemize could deduct their state income taxes from their taxable federal income. So for the highest earners, the effective marginal rate was 8.0%, not 13.3%. [Deducting 39.6% of 13.3% saved them 5.3%. 13.3% minus 5.3% is 8.0%.]