Candice Horbacz
The landscape of U.S. trade policy has undergone a significant upheaval following a Supreme Court ruling in early 2026 that declared the expansive 2025 tariffs imposed under the International Emergency Economic Powers Act (IEEPA) unlawful. This landmark decision has triggered a scramble to replace the invalidated duties with new measures under Sections 122, 301, and 232 of U.S. trade law, prompting a critical reassessment of their economic impact on the nation’s gross domestic product (GDP), employment, and household incomes. Analysis reveals that while the IEEPA tariffs would have been the largest tax hike since 1993, their removal, coupled with the new replacement tariffs, still represents a substantial economic burden and a notable shift in trade strategy.
The Supreme Court’s Landmark Decision and Its Aftermath
The Supreme Court’s ruling against the IEEPA tariffs, which had been enacted by President Trump on January 20, 2025, marked a pivotal moment in American trade governance. These tariffs, which had significantly altered import costs and government revenue throughout 2025, are now subject to refunds, necessitating a rapid recalibration of federal fiscal projections and trade relations. In response to this legal invalidation, the administration swiftly moved to implement a combination of new Section 122 tariffs—a temporary measure lasting 150 days—alongside expanded Section 301 and Section 232 investigations and tariffs. This strategic pivot aims to maintain a protective stance on domestic industries and address perceived unfair trade practices, albeit through different legal avenues.
Reshaping U.S. Tariff Landscape: New Averages and Rates
The imposition and subsequent invalidation of the IEEPA tariffs have dramatically fluctuated the weighted average tariff rates applied to U.S. imports. Before the IEEPA ruling, estimates indicated that U.S. imports faced a weighted-average applied tariff rate of 13.8 percent, a stark increase from the World Bank’s reported 1.5 percent in 2022. With the 10 percent Section 122 tariffs now in effect, this applied rate is projected to be 10.2 percent. Should these temporary tariffs be set at 15 percent, the rate would climb to 12.1 percent. Following their expiration after 150 days, the rate is estimated to recede to 6.7 percent.
The average effective tariff rate, which measures actual customs duties collected as a share of total goods imports, also saw significant volatility. In 2025, propelled by the now-unlawful IEEPA tariffs, the effective rate surged from 2.4 percent in 2024 to a staggering 7.7 percent—the highest since 1947. Looking ahead to 2026, if the 10 percent Section 122 tariffs expire as planned, the average effective rate is forecast to be 5.6 percent, which would still be the highest since 1972. A 15 percent Section 122 tariff rate would push this to 6.0 percent, marking the highest since 1971. These figures underscore the profound and ongoing impact of tariff policies on the cost of imported goods for American businesses and consumers.
Federal Coffers and the Cost of Tariffs
The financial implications of these tariff adjustments for the federal government are substantial. In calendar year 2025, with the IEEPA tariffs in place, customs duties generated an impressive $264 billion for the federal government, a significant jump from $79 billion collected in 2024. However, the Supreme Court’s decision mandates the refunding of revenue collected under the IEEPA tariffs. This highlights a crucial distinction: total tariff revenue collected is not equivalent to the net revenue for the government, as tariffs inherently reduce the bases for income and payroll taxes. For instance, the Section 232 tariffs alone netted an estimated $36 billion for the government in 2025.
Looking forward, conventional estimates project that the Section 232 tariffs, if imposed permanently, will increase federal tax revenue by $635 billion from 2026 through 2035. The temporary 10 percent Section 122 tariffs are expected to raise $27 billion in 2026, or $35 billion if levied at 15 percent, effectively replacing approximately 52 percent (or nearly 70 percent at 15 percent) of the revenue that would have been generated by the IEEPA tariffs over their 150-day period. The now-unlawful IEEPA tariffs, had they remained in effect, would have added an estimated $1.4 trillion in revenue over the next decade.
However, a dynamic analysis, which accounts for the negative economic effects of tariffs on U.S. economic output, paints a more conservative revenue picture. On a dynamic basis, the Section 232 and temporary Section 122 tariffs are projected to raise $517 billion from 2026 through 2035, approximately $145 billion less than the conventional estimate. Similarly, the IEEPA tariffs would have dynamically raised $1.1 trillion over the next decade, $264 billion less than their conventional projection. The added burden of imposed retaliatory tariffs, which totaled $223 billion of U.S. exports based on 2024 values, further reduces this 10-year revenue by an estimated $136 billion.
In 2026, the combined impact of the Section 232 and 10 percent Section 122 tariffs is expected to increase federal tax revenues by $81 billion, or 0.26 percent of GDP. This makes it the 20th largest tax increase since 1940. If the Section 122 tariffs were set at 15 percent, the combined increase would be $89 billion, or 0.28 percent of GDP, ranking as the 18th largest tax increase. These figures, though reduced from the IEEPA projections, still represent a significant fiscal shift.
Beyond Tariffs: The Enduring Trade Deficit Debate
One of the stated objectives behind imposing tariffs has often been to reduce the U.S. trade deficit. However, economic theory and historical evidence suggest that a nation’s balance of trade is primarily driven by broader macroeconomic balances between domestic saving and investment, rather than specific trade policies like tariffs. The United States, for decades, has experienced domestic investment outpacing domestic saving, necessitating capital inflows from the rest of the world to bridge this gap. This capital inflow essentially represents foreign lending to the U.S. economy, financing business investment and the government’s budget deficit. Since tariffs do not directly alter these fundamental saving and investment dynamics, they cannot permanently shift the trade balance.
The United States has consistently run a trade deficit since 1975. This persistent deficit is not inherently an economic problem; rather, net imports (another term for a trade deficit) can reflect the strength and attractiveness of the U.S. economy for foreign investment, serving as a stable haven for global capital. When foreign capital finances the U.S. capital stock, it can contribute to higher levels of productivity and economic growth than would otherwise be possible. In 2025, despite the significant tariff activity, the overall trade deficit decreased by a mere $2.1 billion compared to 2024. This marginal reduction was primarily attributable to an increase in the services trade surplus, as the goods deficit actually expanded by $25.5 billion year-over-year, further illustrating the limited direct impact of tariffs on the overall trade balance.
Quantifying the Economic Toll: GDP, Jobs, and Investment
The economic consequences of these tariff policies are far-reaching, affecting GDP, capital stock, and employment. The temporary nature of the Section 122 tariffs (150 days) means they are projected to have no long-run economic impact. However, the Section 232 tariffs are estimated to reduce long-run U.S. GDP by 0.2 percent and eliminate 154,000 full-time equivalent jobs, even before accounting for foreign retaliation. Had the IEEPA tariffs, including scheduled "reciprocal" tariffs, remained in force, they would have inflicted an additional 0.3 percent reduction in long-run GDP, leading to 282,000 fewer jobs.
The threat and imposition of retaliatory tariffs from other nations further exacerbate these negative effects. As of September 1, 2025, retaliatory measures threatened or imposed by foreign governments affect $223 billion of U.S. exports (based on 2024 import values). If fully implemented, these retaliatory tariffs are estimated to reduce long-run U.S. GDP by an additional 0.2 percent and result in the loss of 141,000 full-time equivalent jobs. Specific breakdowns show that Section 232 tariffs on autos and auto parts alone could account for a 0.1 percent GDP reduction and 98,000 job losses. The combined effect of current U.S. tariffs and anticipated retaliation points to a significant drag on economic growth and employment.
The Burden on Households: Distributional Impacts
The effects of tariffs are not evenly distributed across the population; they ultimately translate into higher costs for consumers and reduced after-tax incomes for all income groups. In 2026, the current tariffs are projected to reduce after-tax incomes across the board. While the top 1 percent of income earners will experience a reduction, it is expected to be proportionally smaller than for other income brackets.
On average, for U.S. households, the initial suite of 2025 tariffs (including IEEPA) would have represented an average tax increase of $1,000 in 2025, and $1,300 in 2026. However, with the IEEPA tariffs now deemed illegal, the immediate burden is lessened. The Section 232 tariffs alone are projected to result in an average tax increase of $400 per household in 2026. If the 10 percent Section 122 tariffs are also considered, this burden rises to an average of $600 per household. It is important to note that these averages do not fully capture the additional, indirect costs consumers face through higher-priced alternative goods and a reduction in overall consumer choice, which further diminish purchasing power.
A Chronology of Tariffs: From Threat to Reality
The rapid evolution of U.S. tariff policy in 2025-2026 highlights a dynamic and often contentious trade environment.
- January 20, 2025: President Trump signs an executive order tasking cabinet secretaries with developing reports on trade practices and tariff recommendations.
- April 1, 2025: Reports on trade practices and tariff recommendations are due.
- Throughout 2025: Various new tariffs and investigations are initiated, including the IEEPA tariffs.
- Early 2026: The Supreme Court rules the IEEPA tariffs unlawful.
- Post-Ruling: The administration moves to replace IEEPA tariffs with Section 122 (temporary), Section 301, and Section 232 investigations and tariffs.
- Section 122 Tariffs: Implemented as a temporary measure, initially at 10 percent, for 150 days. These are designed to quickly replace some of the revenue lost from the IEEPA ruling.
- Section 301 Tariff Investigations: These investigations, historically targeting unfair trade practices, are reactivated and expanded to cover various countries and goods, providing a long-term mechanism for imposing duties.
- Section 232 Product-Specific Tariffs: Existing Section 232 tariffs (e.g., on steel and aluminum) are maintained, and new investigations are initiated for other product categories like autos, auto parts, furniture, and heavy trucks. This suggests a continued focus on national security grounds for trade protection.
The now-unlawful IEEPA tariffs, initially implemented in 2025, included a wide range of "reciprocal" tariff rates, some as high as 50 percent (e.g., on imports from Brazil) or 35 percent (e.g., Canada), affecting hundreds of billions of dollars worth of imports from countries globally, including China, the EU, Mexico, and Japan. The scale of these now-overturned tariffs underscores the legal challenge and the subsequent need for a comprehensive replacement strategy.
A Look Back: Lessons from the 2018-2019 Trade War
The current trade policy shifts draw parallels with the 2018-2019 trade war initiated under the previous Trump administration, the economic effects of which persisted into the Biden administration. Analysis of these earlier tariffs—primarily Section 301 tariffs on Chinese goods and Section 232 tariffs on steel and aluminum—estimated a long-run reduction in U.S. GDP by 0.2 percent, a decrease in the capital stock by 0.1 percent, and a loss of 142,000 full-time equivalent jobs. While these tariffs did not significantly alter pre-tax wages (as capital stock and hours worked declined proportionally, maintaining the capital-to-labor ratio), their removal was projected to boost GDP and employment.
Retaliatory tariffs from foreign governments in response to these actions also imposed a cost on the U.S. economy. Affecting over $106 billion worth of U.S. exports, these retaliatory measures generated no revenue for the U.S. government but reduced U.S. GDP and capital stock by less than 0.05 percent and cut 27,000 full-time equivalent jobs.
By the end of 2024, the tariffs from the 2018-2019 trade war had cumulatively generated over $264 billion in customs duties. The Trump administration accounted for $89 billion (34 percent) of this, with the remaining $175 billion (64 percent) collected during the Biden administration. These higher tariffs translated to an average annual tax increase of $625 per U.S. household before accounting for behavioral effects, though the actual cost, including lower incomes and reduced consumer choice, was higher.
A timeline of the 2018-2019 trade war demonstrates the scale and complexity of these measures:
- March 2018: President Trump imposes 25 percent tariffs on steel and 10 percent on aluminum imports (Section 232).
- July & August 2018: Initial Section 301 tariffs on $50 billion of Chinese imports take effect.
- September 2018: 10 percent tariffs on an additional $200 billion of Chinese goods are imposed (Section 301), later increased to 25 percent in May 2019.
- August 2019: Plans for 10 percent tariffs on the remaining $300 billion of Chinese goods are announced, with some later adjusted or reduced (List 4a and 4b).
- October 2019: U.S. authorized by WTO to impose tariffs on $7.5 billion of EU goods due to a long-running dispute. These were later suspended by the Biden administration in 2021.
- January 2018 onwards: Section 201 tariffs on solar panels and washing machines are imposed, with extensions and modifications by both administrations.
- May 2024: The Biden administration expands Section 301 tariffs on $18 billion of Chinese goods, adding $3.6 billion in new taxes, targeting sectors like EVs, batteries, and semiconductors.
Despite these measures, trade volumes of affected goods did fall, particularly with China. However, this often led to trade diversion, where imports shifted from China to other countries, rather than a fundamental alteration of the overall balance of trade. This historical context provides valuable insights into the likely outcomes of the new tariff regime.
Future Policy and Campaign Proposals
Tariffs were a prominent feature of the 2024 presidential campaign, with former President Trump proposing a new 10 percent to 20 percent universal tariff on all imports, a 60 percent tariff on all imports from China, higher tariffs on Chinese EVs, and 25 percent tariffs on Canada and Mexico. Estimates suggest that a 20 percent universal tariff combined with an additional 50 percent tariff on China (totaling 60 percent) would reduce long-run economic output by 1.3 percent before any foreign retaliation. Such policies were also projected to increase federal tax revenues by $3.8 trillion on a conventional basis, or $3.1 trillion dynamically, from 2025 through 2034. These proposals underscore the ongoing political appetite for tariff-based trade policies and their potentially vast economic implications.
Economic Consensus: Tariffs Impede Growth
Economists largely concur that free trade enhances economic output and income, while trade barriers, such as tariffs, diminish both. Historical evidence consistently demonstrates that tariffs inflate prices and reduce the availability of goods and services for U.S. businesses and consumers, leading to lower incomes, reduced employment, and decreased economic output.
Tariffs can stifle U.S. output through several mechanisms. They may be passed on to producers and consumers as higher prices, increasing the cost of raw materials and components, which subsequently raises the price of finished goods and curtails private sector output. This ultimately lowers incomes for both capital owners and workers. Similarly, elevated consumer prices, a direct consequence of tariffs, erode the after-tax value of labor and capital income, discouraging work and investment and leading to a smaller economy.
Alternatively, tariffs can trigger an appreciation of the U.S. dollar, which might offset some domestic price increases. However, a stronger dollar simultaneously makes U.S. exports more expensive on the global market, reducing revenues for exporters and diminishing U.S. output and incomes. Numerous economic studies on the 2018-2019 trade war have consistently shown that tariffs resulted in higher prices and a reduction in economic output and employment. The current shift in U.S. tariff policy, while legally necessitated, is expected to continue these economic trends, albeit with a new set of parameters and challenges.
