Three Forces Converging at Once
September 2026 is proving to be one of the most expensive months in recent memory for US importers and manufacturers. The combination of tariffs imposed under President Donald Trump's trade policies, surging fuel prices from the Iran war, and rising interest rates is forcing executives across industries to make tough choices. These three pressures did not arrive separately — they landed almost simultaneously, and they are compounding one another in ways that are squeezing margins faster than many finance teams anticipated. Understanding each force individually, and then how they interact, is the first step toward managing the exposure.
Pressure One: The Tariff Stack Keeps Growing
The tariff environment facing US importers in late 2026 is more complex than at any prior point in recent trade history. After the Supreme Court's February 2026 ruling invalidating IEEPA-based tariffs, the administration moved quickly to replace them on a more durable legal footing. On July 23, 2026, USTR announced final action in its Section 301 investigations concerning the failure of 60 economies to enforce prohibitions on imports produced with forced labor, with those new tariffs taking effect at 12:01 a.m. EDT on July 24, 2026, immediately following the expiration of the temporary Section 122 duties.
The new duties range from 10% to 12.5%, subject to numerous product-specific and country-specific exclusions, and USTR stated that the affected economies account for approximately 99.4% of US imports. That near-universal reach means that sourcing from virtually any trading partner now carries an additional duty layer. These new Section 301 forced labor duties apply in addition to ordinary customs duties and may stack alongside other trade remedies, so goods subject to antidumping, countervailing duties, or existing Section 301 duties on Chinese products may also carry the new forced labor tariffs on top.
USTR is also expected to announce findings from its Section 301 investigation into manufacturing excess capacity involving 16 countries, and any resulting tariffs from that investigation would likely stack on top of the forced labor tariffs. Importers who thought they had modeled their full duty exposure for the year may need to revisit those calculations.
Pressure Two: Fuel Costs in Triple-Digit Territory
The Iran war has done to energy markets what tariffs did to goods markets: driven costs sharply and unpredictably higher. WTI oil climbed from roughly $60 per barrel in late January 2026, before military action was anticipated, to $91 per barrel on average in March, alongside broad-based increases in refined product prices including gasoline, diesel, and jet fuel. The volatility has not let up since. Brent prices initially surged to a peak of approximately $118 in late March 2026 before declining to around $70 by July 1, then rebounded to over $100 by late July — and as of early September 2026, prices surged back toward $109 as renewed attacks on shipping and energy infrastructure reversed earlier gains.
Those fuel price swings translate directly into freight costs. The Brent crude oil spot price averaged $91 per barrel in August, $7 per barrel higher than in July, as total exports out of the Middle East remained constrained and led to more oil production shut-ins in the region. Ocean carriers and trucking companies pass these costs on through fuel surcharges that adjust weekly or monthly, meaning every shipment reprices in near real time. West Texas Intermediate crude oil futures started the year near $57 per barrel and recently moved back above $100 — and higher energy costs raise transportation, manufacturing, and household expenses simultaneously. For importers who locked in freight budgets at the start of the year, the gap between forecast and actual spend has become very large.
Pressure Three: The Fed Raises Rates for the First Time Since 2023
The third element of the squeeze arrived last week. On September 16, 2026, the Federal Reserve raised its benchmark interest rate by 0.25% to a target range of 3.75% to 4.00% to help combat stubborn inflation. The move came after consumer prices rose again in August amid the war with Iran. For importers, higher interest rates are not an abstract macroeconomic event — they directly increase the cost of financing inventory, letters of credit, and working capital lines.
Market participants entered the year expecting rate cuts, then in March began pricing in multiple rate hikes by year end — and the baseline scenario now calls for the Fed to hike at least one additional time in 2026. Businesses that front-loaded inventory earlier this year to get ahead of tariffs now find themselves holding more stock than planned, financed at rates higher than when those purchasing decisions were made. Tariffs are raising the cost of materials and goods, higher fuel prices are increasing production and transportation costs, and higher interest rates are making it more expensive to finance inventory — and all three channels are open simultaneously.
How the Three Forces Multiply Each Other
Tariffs, soaring fuel prices, and higher interest rates are squeezing American companies, particularly manufacturers, auto suppliers, retailers, and transportation businesses. The interaction effect is what makes September 2026 particularly difficult. A manufacturer who imports components subject to a new Section 301 tariff layer faces higher landed costs. Those components then move through a supply chain powered by diesel that now costs significantly more than at the start of the year. The finished goods sit in a warehouse financed by a revolving credit facility whose rate just moved higher. Companies that successfully pass cost increases onto end consumers without triggering severe volume drops are outperforming those trapped between rising input costs and price-sensitive buyers.
One small manufacturer in Iowa has been holding extra inventory to hedge against further price spikes, noting that a small bracket component for his saw motors more than doubled in price this summer, surging to $87 from $42. That kind of component-level cost inflation is showing up across manufacturing sectors, and it compounds directly with freight and financing costs.
Mitigation Strategy: Duty Drawback for Eligible Importers
One underused lever for importers caught in the tariff portion of this squeeze is duty drawback under 19 USC 1313. Section 301 duties are eligible for duty drawback — under 19 USC 1313, a claimant can recover up to 99% of the duties, taxes, and fees paid on imported merchandise that is subsequently exported or used to manufacture an exported product, and this applies across all three Section 301 actions: the forced-labor duties, the China lists, and the Brazil action.
Unlike the IEEPA fentanyl tariff, which is barred from drawback, no Section 301 duty measure bars drawback. Section 232 steel, aluminum, and derivative duties are recoverable only through manufacturing drawback, a different and narrower path than the Section 301 rules. Importers who export finished goods or re-export imported merchandise should work with a licensed customs broker to assess whether they have an unclaimed drawback position. Many companies remain cautious about pursuing tariff refunds due to legal complexities and documentation requirements, even though tariff costs significantly influence sourcing decisions, budgeting, and long-term supply chain strategies.
Other Levers: Classification, Exclusions, and Sourcing Review
Beyond drawback, importers navigating the triple squeeze have several other tools available. First, a careful HTS classification review can reveal whether goods qualify for one of the many product-specific exclusions built into the July 2026 Section 301 forced labor action. General exemptions under that action cover in-transit goods, civil aircraft, pharmaceuticals, aluminum, steel, copper, vehicles, wood products, semiconductors, humanitarian donations, and informational materials. Products that fall within exempted categories carry a meaningfully different cost structure than those that do not.
Second, contracting strategy deserves a fresh look. Incoterms determine where duty liability sits between buyer and seller, and renegotiating terms to better reflect where costs are actually accumulating can help reallocate exposure. Third, warehouse financing structures can be optimized — bonded warehouse storage allows importers to defer duty payment until goods are withdrawn for consumption, which reduces the working capital drawn against a now-more-expensive credit facility. While IEEPA refunds move forward, broad new Section 301 and 232 investigations are setting up sustained tariff pressure, and companies should proactively assess exposure, reinforce compliance, and develop sourcing and contract strategies to navigate a more permanent tariff regime.
How ASR Can Help
ASR WorldWide Express is a licensed freight forwarder (FMCSA MC# 1667345-B, DOT# 4286843, SCAC AZCB) based in Miami, FL. Our team coordinates with trusted, licensed customs broker partners to help importers navigate HTS classification reviews, identify applicable exclusions under current Section 301 and Section 232 regimes, structure bonded warehouse solutions, and optimize shipping lanes and incoterms as costs shift. Whether you are importing from a country now subject to the new forced labor Section 301 duties or managing freight budgets against volatile fuel surcharges, our team can help you model the full cost picture before you commit to your next shipment.
Contact ASR WorldWide Express at +1 786 373 3003 or email shipping@asrwe.com to speak with a freight specialist about your current import program.
Important Disclaimer
This article is for informational purposes only and does not constitute legal, tax, or customs compliance advice. Tariff rates, duty drawback eligibility, exemption lists, and regulatory requirements change frequently and vary by product, origin, and end use. Importers and exporters should consult a licensed customs broker and qualified legal counsel before making decisions based on any information contained here.
