The July 2026 Tariff Cliff: What Happens When Section 122 Expires and How to Prepare

Section 122 tariffs expire on July 24, 2026. The administration is racing to build replacement authority through Section 301 and 232 investigations. Here's what's coming, what it means for your landed costs, and how to prepare for every scenario.

On February 24, 2026, the 15% Section 122 tariff replaced the IEEPA tariffs that the Supreme Court struck down four days earlier. It was a stopgap — everyone knew that. What makes it urgent is the hard deadline built into the statute.

Section 122 of the Trade Act of 1974 limits tariff authority to 150 days without congressional approval. That clock started on February 24. It runs out on July 24, 2026.

After that date, the Section 122 tariff either expires, gets extended by Congress, or gets replaced by something else. Each scenario produces a radically different tariff environment. And the administration has made clear it does not intend to let tariffs simply disappear.

What happens on July 25 will define the trade landscape for the rest of the decade. Here is what we know, what we don't, and how to prepare for every realistic outcome.

What Section 122 Actually Authorizes

Section 122 of the Trade Act of 1974 gives the President authority to impose temporary import surcharges to address "fundamental international payments problems." It was enacted in 1974 but never used for broad tariffs until February 2026.

The statute has three key constraints:

1. Maximum rate of 15% ad valorem. The President cannot impose surcharges exceeding 15%. This is a hard statutory cap — unlike IEEPA, where rates reached 145% on some Chinese goods.

2. Maximum duration of 150 days. The surcharge automatically expires after 150 days unless Congress passes legislation to extend it. This is not a discretionary limit — it is written into the statute.

3. Must apply globally. Unlike IEEPA, which allowed country-specific tariff rates, Section 122 surcharges must apply across the board. The President cannot single out individual countries for different rates.

What Section 122 Currently Covers

The Section 122 tariff applies broadly, but with significant exemptions:

The practical effect: most imports from most countries pay a flat 15% surcharge on top of existing MFN duty rates and any Section 301 or Section 232 tariffs that apply independently.

The Four Scenarios After July 24

Scenario 1: Section 122 Expires — No Replacement

What happens: The 15% surcharge disappears on July 25, 2026. Imports revert to their pre-IEEPA tariff rates (MFN duties plus any existing Section 301 and Section 232 tariffs).

Likelihood: Low. The administration has stated repeatedly that it intends to maintain tariff pressure. Allowing the surcharge to expire with no replacement would be a significant policy reversal.

Impact on importers: Immediate reduction in landed costs for goods currently subject to the 15% surcharge. For a company importing $50 million annually, this represents approximately $7.5 million in annual duty savings. However, this scenario creates its own uncertainty — companies that restructured supply chains to absorb higher tariffs may find themselves overinvested in mitigation strategies that are no longer necessary.

Scenario 2: Congress Extends Section 122

What happens: Congress passes legislation extending the 15% surcharge beyond the 150-day limit. The tariff continues at 15% for whatever duration Congress authorizes.

Likelihood: Very low. Both the House and Senate passed bills disapproving of the IEEPA tariffs before the Supreme Court ruling. Bipartisan support for extending Section 122 is unlikely without major concessions from the administration. Congress may not have the votes to extend the tariff even if leadership wanted to.

Impact on importers: Status quo continues. The 15% surcharge remains, but at a lower rate than the IEEPA tariffs it replaced (which ranged from 10% to 145%). This is the most predictable scenario for business planning.

Scenario 3: Section 301 and 232 Tariffs Replace Section 122

What happens: The administration completes new Section 301 and Section 232 investigations and imposes tariffs under those authorities before or shortly after Section 122 expires. The 15% flat rate is replaced by product-specific and country-specific tariffs under more legally durable statutes.

Likelihood: High. This is the administration's stated plan. USTR Jamieson Greer announced on February 20, 2026 — the same day as the Supreme Court ruling — that the administration would launch Section 301 investigations against "most major trading partners" in "short order."

Impact on importers: The tariff landscape becomes more fragmented and potentially more aggressive. Section 301 tariffs can be targeted by country and product category, with no 15% rate cap. Section 232 tariffs can apply to specific industries (steel, aluminum, autos, and potentially more). Some importers may face rates higher than the current 15%; others may see lower rates or exemptions.

Scenario 4: Section 122 "Reset"

What happens: The President allows the current Section 122 tariff to expire, declares a new "fundamental international payments problem," and reimpose a fresh 150-day surcharge — effectively resetting the clock.

Likelihood: Moderate, as a fallback if Section 301 investigations are not complete in time. However, this approach is legally vulnerable. Courts could view a serial reset as an attempt to circumvent the 150-day limit, and legal challenges would almost certainly follow.

Impact on importers: Continued 15% surcharge with persistent legal uncertainty. Each 150-day cycle brings the possibility of expiration and the prospect of another reset, making long-term planning difficult.

The Section 301 Investigations: What's Coming

Section 301 of the Trade Act of 1974 is the administration's most likely long-term tariff tool. Unlike Section 122, Section 301 tariffs can be country-specific, product-specific, and have no rate cap. Unlike IEEPA, they are built on formal investigations with public comment periods, making them more legally durable.

Investigations Already Announced or Underway

The Section 301 Timeline

A Section 301 investigation follows a structured process:

1. Initiation (0–45 days): USTR decides to investigate, either by petition or self-initiation.
2. Public comment period (45–90 days): Federal Register notice, public comment solicitation, and hearing.
3. Consultation with foreign government (concurrent): Required by statute.
4. Determination (12–18 months from initiation): USTR concludes whether the foreign practice is actionable.
5. Action (within 30 days of determination): USTR imposes tariffs or other trade measures.

The critical question: Can the administration complete new Section 301 investigations fast enough to have tariffs in place by July 24?

Under normal timelines, no. A fresh investigation initiated in March 2026 would not reach the determination stage until early-to-mid 2027. But the administration has levers to accelerate the process:

• Self-initiation bypasses the 45-day petition review. USTR can start investigations immediately.
• The first Trump administration completed some investigations well ahead of the statutory 12-month deadline. Political urgency could compress the timeline.
• Existing investigations (China Phase One, Brazil, digital services taxes) are already in progress and could yield tariff actions within months.
• Building on prior findings. USTR could expand existing Section 301 tariffs on China rather than starting entirely new investigations.

The most likely outcome: a patchwork approach where tariffs on China and a few other countries come through expedited 301 actions, while broader investigations covering the rest of the world take longer.

Section 232: The Other Replacement Tool

Section 232 of the Trade Expansion Act of 1962 authorizes tariffs to protect national security. It is already the basis for steel tariffs (25%), aluminum tariffs (25%), auto tariffs (25%), and copper investigations.

The administration could expand Section 232 to cover additional industries. Possible targets include:

• Critical minerals and rare earth elements — Already under investigation
• Semiconductors and electronics — National security nexus is straightforward
• Pharmaceuticals and medical devices — Supply chain vulnerability argument
• Shipbuilding and maritime — Already the subject of a Section 301 action (currently suspended)

Section 232 investigations are conducted by the Commerce Department and typically take 270 days, though the Secretary can self-initiate and expedite.

What This Means for Your Supply Chain

The 150-day countdown creates a planning horizon that every importer needs to work within. Here is how to approach it:

Near Term (Now Through July 24)

Lock in the 15%. The current tariff environment is known: 15% on most goods, with defined exemptions. Use this window to:

• Finalize landed cost models at the 15% rate
• Negotiate supplier pricing that reflects the current rate (not the old IEEPA rates)
• Evaluate whether any products qualify for Section 122 exemptions you haven't utilized
• Pre-ship inventory where possible if you expect rates to increase under Section 301

Monitor Section 301 developments. USTR publishes Federal Register notices for all Section 301 actions. Watch for:

• New investigation initiations (will tell you which countries are targeted)
• Public comment requests (will tell you which product categories are in scope)
• Determination notices (will tell you rates and timing)

Medium Term (July – December 2026)

Plan for multiple tariff scenarios. Build at least three cost models:

1. Tariffs drop (Section 122 expires with incomplete replacement): Landed costs decrease, but be prepared for tariffs to return under 301/232 authority later.
2. Tariffs stay at 15% (Section 122 extended or replaced at similar levels): Status quo continues.
3. Tariffs increase for some countries/products (Section 301 targeted actions): Certain categories see rates above 15%, others below.

Diversify sourcing where feasible. Section 301 tariffs are country-specific. If an investigation targets your primary sourcing country, having alternative suppliers in non-targeted countries becomes a significant cost advantage.

Long Term (2027 and Beyond)

Expect a new tariff architecture. The pre-2025 tariff world is not coming back. Whether through Section 301, Section 232, or new legislation, the U.S. is moving toward a more protectionist trade posture. Build supply chains that can absorb tariff fluctuations rather than ones optimized for a single tariff regime.

Key Dates to Watch

What About Legal Challenges?

The same trade groups and importers that successfully challenged the IEEPA tariffs are preparing to challenge whatever comes next. Key vulnerabilities:

Section 122: The legal authority requires a "fundamental international payments problem." Critics argue the U.S. balance of payments situation does not meet this standard. However, the Section 122 tariffs will likely expire before any legal challenge reaches a final decision.

Section 301: More legally durable because it rests on specific investigative findings about foreign trade practices. However, challenges could target the scope of the investigation, the adequacy of the public comment process, or the proportionality of the tariff response. The original Section 301 tariffs on China survived a CIT challenge in 2023, but that precedent does not guarantee future tariffs will.

Section 232: Has survived Supreme Court challenge (in Algonquin SNG, Inc. regarding oil import fees), but expansion to new industries could face arguments that the national security nexus is pretextual.

The bottom line: Section 301 and Section 232 tariffs are on stronger legal footing than IEEPA tariffs were, but they are not bulletproof. Plan for the tariffs to exist while monitoring litigation developments.

The Tariff Landscape After the Cliff: A Summary

The Bottom Line

July 24, 2026 is not just a date on the calendar. It is the moment the current tariff stopgap either converts into a more permanent structure or creates a temporary gap that the administration will rush to fill.

The importers who are prepared for this — who have modeled multiple scenarios, diversified where possible, and monitored Section 301 developments — will navigate the transition smoothly. The ones who assume the 15% rate is permanent, or who assume tariffs will simply disappear, will be caught off guard.

The tariff cliff is coming. The only question is what's on the other side.

TariffLens tracks tariff rates in real time across every program — Section 122, Section 301, Section 232, and more. When your landed cost depends on which tariff authority applies, you need classification you can trust. See how TariffLens can help.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Tariff regulations and trade policy are evolving rapidly; verify current requirements with CBP official guidance and qualified trade counsel before making supply chain or compliance decisions.