On February 20, 2026, the Supreme Court struck down all IEEPA reciprocal tariffs in a 6-3 ruling. Hours later, President Trump signed a 10% flat tariff under Section 122 of the Trade Act of 1974 — the first time this authority has been invoked in decades. The new section 122 tariff rates 2026 represent a dramatic simplification: every country now faces the same 10% rate, replacing the patchwork of IEEPA rates that ranged from 10% to 46%. But this simplicity comes with a catch — Section 122 has a hard 150-day time limit, meaning the tariff expires approximately July 24, 2026 unless Congress acts. For importers, the shift to section 122 tariff rates creates both immediate savings and new uncertainty. Countries like Vietnam (previously 46%), Thailand (36%), and Taiwan (32%) see massive rate reductions, while countries that were already at 10% see no change. Understanding this new landscape is critical for supply chain decisions over the next five months.
What Is Section 122 and Why Was It Used?
Section 122 of the Trade Act of 1974 (19 U.S.C. § 2132) authorizes the president to impose temporary import surcharges of up to 15% to address large and serious balance-of-payments deficits. It was designed as an emergency trade tool — not a long-term tariff mechanism. The provision was last used by President Nixon in 1971 when he imposed a 10% import surcharge during a dollar crisis. The Trump administration turned to Section 122 because it is one of the few remaining presidential authorities for broad tariff action after SCOTUS closed the IEEPA route. Critically, Section 122 includes a built-in 150-day time limit. The president cannot extend it unilaterally — only Congress can authorize continuation beyond that window. This makes the current 10% tariff inherently temporary, expiring around July 24, 2026.
The New Rate Structure: 10% Flat on All Countries
The section 122 tariff rates 2026 are remarkably simple compared to the old IEEPA regime. Every country faces the same 10% ad valorem tariff on imports, effective February 24, 2026 at 12:01 AM ET. There are no country-specific variations, no product-specific carve-outs within the Section 122 framework, and no graduated tiers. This replaces IEEPA reciprocal rates that varied widely: Vietnam was at 46%, Bangladesh at 37%, Thailand at 36%, Taiwan at 32%, Switzerland at 31%, South Africa at 30%, EU countries at 20%, China at 20% (10% reciprocal + 10% fentanyl), and most other countries at 10%. For countries that were previously at 10% under IEEPA — including Japan, the UK, Canada, Mexico, Brazil, and Turkey — the effective rate is unchanged.
Biggest Winners: Countries With the Largest Rate Drops
The countries that benefit most from the shift to section 122 tariff rates are those that faced the highest IEEPA reciprocal rates. Vietnam leads the pack with a drop from 46% to 10% — a 36 percentage point reduction that makes Vietnamese goods dramatically more competitive overnight. A $100,000 shipment of furniture from Vietnam now costs $10,000 in tariffs instead of $46,000. Bangladesh drops from 37% to 10%, providing massive relief for the garment industry. Thailand falls from 36% to 10%, benefiting electronics and auto parts exporters. Taiwan drops from 32% to 10%, a boon for semiconductor-adjacent products and electronics. Indonesia goes from 32% to 10%, and South Korea from 25% to 10%. EU countries including Germany, France, Italy, and the Netherlands all drop from 20% to 10%. Even India, which had already negotiated a reduced rate of 18%, benefits with a further cut to 10%.
What Tariffs Still Apply on Top of Section 122
The 10% Section 122 rate is not the only tariff importers pay. Section 232 tariffs remain fully in effect: steel at 25%, aluminum at 25%, automobiles at 25%, copper at 50%, semiconductors at 25%, and lumber at 10%. These tariffs stack on top of the 10% Section 122 rate. For example, steel from Germany now faces 10% (Section 122) + 25% (Section 232) = 35% total — still a significant duty, though lower than the previous 45% (20% IEEPA + 25% Section 232). Section 301 tariffs on China also remain. Most Chinese goods still face 25-100% in Section 301 duties. The effective rate on Chinese electronics is now approximately 35% (10% Section 122 + 25% Section 301), down from the previous 45% (20% IEEPA + 25% Section 301). Trade agreement preferences like USMCA continue to exempt qualifying goods from the Section 122 tariff, just as they exempted goods from IEEPA tariffs.
The 150-Day Clock: What Happens on July 24, 2026
The most important date for importers tracking section 122 tariff rates 2026 is July 24 — the approximate day the 150-day authority expires. Three scenarios are possible. Scenario 1: Congress extends the 10% rate by passing new legislation. This maintains the status quo but requires bipartisan agreement. Scenario 2: Congress passes a different tariff structure — potentially restoring country-specific rates through new trade legislation. Some members have already proposed the "Reciprocal Trade Act" that would codify variable rates. Scenario 3: The Section 122 tariff simply expires and base rates revert to standard MFN rates (averaging 3.4%), plus any remaining Section 232 and Section 301 tariffs. Each scenario has dramatically different cost implications. Importers should model all three when making purchasing and supply chain decisions for Q3 2026 and beyond.
Impact on China: Section 301 Still Dominates
China presents a unique case under the new section 122 tariff rates. While the IEEPA tariff dropped from 20% to 10%, Section 301 tariffs ranging from 25% to 100% remain the dominant cost factor. Electronics still face approximately 35% effective rates (10% + 25%), down from 45%. EV batteries face 35% (10% + 25%), solar panels face 60% (10% + 50%), and electric vehicles face 110% (10% + 100%). The de minimis threshold for Chinese imports remains eliminated — every shipment is subject to full duties regardless of value. For importers sourcing from China, the Section 122 shift provides modest relief (roughly 10 percentage points), but the tariff burden remains substantially higher than for any other country due to Section 301.
How to Calculate Your New Rate Under Section 122
Calculating your effective tariff rate under the new regime requires checking three layers. Step 1: Start with the 10% Section 122 base rate (applies to all countries unless a trade agreement exempts your goods). Step 2: Add any applicable Section 232 tariff — 25% for steel, aluminum, or autos; 50% for copper; 25% for semiconductors; 10% for lumber. Step 3: Add any applicable Section 301 tariff (China only) — 25% for most products, higher for strategic goods. Example: Importing aluminum auto parts from China costs 10% (Section 122) + 25% (Section 232 aluminum) + 25% (Section 301) = 60%. The same parts from South Korea cost 10% (Section 122) + 25% (Section 232 aluminum) = 35%, with no Section 301. From USMCA-qualifying Mexico: 0% (Section 122 exempt) + 25% (Section 232) = 25%. Use our tariff calculator for instant estimates with all layers included.
Supply Chain Strategy for the Next 150 Days
The temporary nature of section 122 tariff rates 2026 creates a strategic window that importers should exploit. First, accelerate shipments from previously high-tariff countries. If you source from Vietnam, Bangladesh, Thailand, or Taiwan, the next five months offer the lowest rates you may see for years — lock in pricing and consider front-loading orders. Second, diversify supplier relationships now. Use this lower-tariff period to qualify new suppliers in countries you previously avoided due to cost. Third, pursue IEEPA tariff refunds. Companies that paid IEEPA tariffs from April 2025 through February 2026 may be entitled to refunds, though the administration has signaled it will not voluntarily process them. Consult a trade attorney about filing protests with CBP. Fourth, monitor Congress closely. The legislative path forward will determine whether rates stay at 10%, return to variable rates, or drop to zero after July 24.
Key Takeaway
The shift from IEEPA to section 122 tariff rates 2026 is the most significant US tariff change since the original reciprocal tariffs were imposed in April 2025. The uniform 10% rate delivers substantial savings for importers sourcing from previously high-tariff countries — Vietnam alone sees a 36 percentage point reduction. But the 150-day expiration creates real uncertainty. Smart importers will use this window to optimize sourcing, pursue refund claims, and plan for multiple post-July scenarios. Use our tariff calculator to model your costs under the current Section 122 rates, and check back regularly as the congressional debate over permanent tariff legislation unfolds.
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