President Trump's tariff strategy: trade policy or fiscal reform?

“We were at our richest from 1870 to 1913. That’s when we were a tariff country. And then they went to an income tax concept"¹

President Trump supports trade tariffs as a central pillar of his economic policy, driven by a mix of ideological commitment, historical nostalgia, and strategic political goals. He and his advisors view tariffs not just as a tool of trade policy, but as a fundamental restructuring of how the US federal government is financed. Their long-term vision is to use tariff revenue to replace income and corporate taxes, returning to a system that they claim made America wealthy and powerful in the late 19th and early 20th centuries.

This view reflects a selective reading of American economic history. Trump often points to the period between 1870 and 1913—when the US relied heavily on tariffs and had no permanent income tax—as a golden age of national prosperity. He argues that tariffs made the country so wealthy that the government didn’t know what to do with its surplus revenue. However, this narrative overlooks the fact that income taxes were introduced temporarily to finance the Civil War, the economy suffered severe downturns in 1873 and 1893, and the Gilded Age—dominated by powerful industrialists—was characterized by significant inequality and social unrest rather than broadly shared prosperity.

Tariffs were indeed the main source of federal government revenue in the 18th and 19th centuries, largely because they were easier to collect than income taxes — all that was required was for the federal government to control a limited number of ports. The chart below shows that before the Civil War in 1861-65, tariffs generally constituted more than 90% of US government revenue. The rest was sales of public land and, from 1863 onward, excise taxes.

But the shift toward income taxation in the early 20th century was driven by necessity. The US needed to finance World War I and meet the demands of a changing electorate. As suffrage expanded—particularly to working-class men and, later, women—political pressure grew for social spending that tariffs could not fund reliably. Indeed, from 1934 onward, the US government raised revenues for social insurance and retirement programs. Income taxes were more efficient, scalable, and progressive, making them better suited for a modern economy.

Tariffs, by contrast, are regressive: they raise the cost of imported goods, which often hits working-class consumers hard. While they may seem to target foreign producers, the burden typically falls on domestic buyers. Moreover, there are limits to how much revenue tariffs can raise. They follow a Laffer curve-like relationship: beyond a certain point, higher tariff rates don’t generate more income, as trade volume shrinks in response. The high tariffs proposed by the Trump administration appear unlikely to yield the revenue needed to replace income and corporate taxes fully.

Trump’s tariff policies also serve political purposes. They resonate strongly with his base and have helped maintain party unity, even among congressional Republicans who may have reservations about the approach. Many lawmakers appear hesitant to oppose the policy openly, mindful of potential political consequences. Meanwhile, the administration has pursued significant shifts in government spending—reducing funding for certain domestic programs while proposing increases in defence spending, immigration enforcement, and border security.

In the international arena, tariffs have also become a tool in trade negotiations, particularly with China. However, this strategy has raised concerns among business leaders and financial markets. Recent market volatility and occasional criticism from corporate executives reflect growing unease about the potential economic impact. Prolonged trade tensions, especially when met with retaliatory measures, carry the risk of escalating and weighing on both domestic and global growth.

In essence, Trump’s tariff agenda is not just about trade. It is an attempt to fundamentally overhaul America’s tax system, government spending priorities, and global economic posture.

¹ President Trump as quoted by, inter alia, https://www.pbs.org/newshour/politics/trump-has-touted-gilded-age-tariffs-an-era-which-saw-industrial-growth-together-with-poverty

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