History Shows: Wealthy-Focused Taxes Eventually Impact Us All

Vice President Kamala Harris’ proposal to impose a 25% tax on unrealized capital gains is currently framed as a targeted measure aimed at the ultra-wealthy. The intention is to address wealth inequality by taxing the gains of the richest Americans before those gains are realized through the sale of assets. While this approach is initially focused on a small segment of the population, U.S. tax history suggests that such narrowly targeted tax policies often expand over time, eventually impacting a much broader range of taxpayers, including the middle and lower classes. This article examines several historical instances where tax policies that began by targeting the wealthy eventually trickled down to affect all Americans.

The federal income tax, established in 1913 following the ratification of the 16th Amendment, is a prime example of a tax that began with a narrow focus on the wealthy. Initially, the income tax applied to only a small percentage of the population, with rates starting at 1% and a top rate of just 7% for incomes above $500,000—a considerable sum at the time. The majority of Americans were unaffected by this tax, which was designed to capture revenue from the nation’s wealthiest individuals.

However, as government spending increased, particularly during World War I and the Great Depression, the need for revenue expanded. By the time World War II began, the tax base had broadened significantly. The government introduced withholding taxes, and income tax rates were applied to a much larger portion of the population, including the middle class. What began as a targeted tax on the wealthy evolved into a mass tax affecting millions of Americans, illustrating the trickle-down effect of initially narrow tax policies.

The Alternative Minimum Tax (AMT), introduced in 1969, was another tax initially aimed exclusively at the wealthy. The AMT was designed to ensure that high-income earners who utilized various deductions and loopholes still paid a minimum amount of tax. At its inception, the AMT targeted only 155 high-income households that were effectively avoiding federal income tax altogether.

Over the following decades, however, the AMT began to affect a broader group of taxpayers. Because the AMT was not indexed to inflation, more and more middle-income earners found themselves subject to this tax. By the early 2000s, millions of Americans, many of whom were solidly middle class, were paying the AMT. What began as a safeguard against tax avoidance by the wealthy had become a burden on a much larger segment of the population, demonstrating how narrowly targeted taxes can expand over time.

Social Security was established in 1935 as a social safety net for the elderly, initially funded by a payroll tax. This tax was relatively modest and, at first, applied to a limited range of incomes, making it more burdensome for higher earners. The intent was to create a sustainable system that taxed a portion of wages to fund retirement benefits for all Americans.

However, as the Social Security program expanded to cover more beneficiaries and offer additional benefits, such as disability insurance, the payroll tax rate increased. More importantly, the income cap was periodically raised, and over time, the tax base broadened to include a much larger portion of the workforce. While higher earners still paid more due to the cap increases, the tax itself began to take a larger share of income from middle- and lower-income workers. The Social Security tax, which started as a relatively targeted levy, eventually became one of the most broadly applied taxes in the United States.

Excise taxes, which are taxes on specific goods such as alcohol, tobacco, and gasoline, were historically targeted at higher earners who could afford these products. Initially, these taxes were seen as a way to generate revenue from the consumption habits of the wealthy. However, as the government’s need for revenue grew, especially during times of war and economic crisis, excise taxes were expanded and became more broadly applied to a wider array of goods and services.

For example, during the 1940s, excise taxes were increased and applied to more everyday items, impacting middle- and lower-income earners. The expansion of excise taxes illustrates how taxes that start as targeted levies on the wealthy can quickly become a financial burden on the broader population, contributing to the overall tax burden on all Americans.

History shows that taxes initially aimed at the wealthy often do not remain confined to that group. Whether through the broadening of the tax base, the failure to index for inflation, or the expansion of the types of goods and income taxed, what begins as a narrow tax on the wealthy frequently trickles down to affect the middle and lower classes. Kamala Harris’ proposed 25% tax on unrealized capital gains, while currently focused on the ultra-wealthy, could follow this historical pattern, eventually impacting a broader swath of the American population. As policymakers consider this proposal, they should be mindful of the long history of tax policies that, despite their original intentions, have expanded far beyond their initial scope.