Truck Parts Join Car Perks in Import Offset Expansion
Published Date: 5/15/2026
Notice
Summary
Starting May 15, 2026, U.S. makers of medium- and heavy-duty vehicles can claim special import offsets for certain vehicle parts, just like car makers already do. This change helps boost American production by including more types of vehicle parts in the program, while excluding some limited production operations. Car manufacturers can keep applying as usual, and engine offsets will be added later.
Analyzed Economic Effects
8 provisions identified: 3 benefits, 5 costs, 0 mixed.
3.75% Offset for MHDV Production
If you assemble medium- or heavy-duty vehicles in the U.S., you may be eligible for an import adjustment offset equal to 3.75% of the aggregate value of all MHDVs your firm assembles. This 3.75% offset applies for vehicles assembled in each annual period from November 1, 2025, through October 31, 2030, and granted offsets may be carried forward indefinitely until fully used to reduce tariffs on MHDV parts or automobile parts.
3.75% Offset for Automakers (Apr 2025–Apr 2030)
If you assemble automobiles in the United States, you may be eligible for an import adjustment offset equal to 3.75% of the aggregate Manufacturer's Suggested Retail Price (MSRP) of automobiles your firm assembles. That offset applies for automobiles assembled in the annual periods from April 5, 2025 through April 30, 2030, and may be used to reduce tariffs on automobile parts or MHDV parts and carried forward until exhausted.
Heavy-Duty Builds With Imported Chassis Excluded
If your heavy-duty vehicle (Class 7 or 8) production in the U.S. involves incorporating an imported chassis, chassis glider, chassis with engine, or engine, those production operations are considered "limited production operations" and are not eligible for offsets. This exclusion applies to heavy-duty vehicles as defined in 49 CFR 565.15 (gross vehicle weight 26,001 pounds and above).
Engine Costs Excluded From Offset Base
For MHDVs, manufacturers must exclude the cost or value of engines when calculating the aggregate value used to compute the 3.75% offset. For automobiles, manufacturers must deduct engine cost or value from aggregate MSRP for documentation covering May 1, 2026 and later (but are not required to deduct engine cost/value for the April 5, 2025–April 30, 2026 period). Commerce will create a separate, equivalent offset process for automobile and MHDV engines later.
MHDV Makers Can Apply Starting May 15
If you manufacture medium- or heavy-duty vehicles in the United States, you can submit applications for import adjustment offsets starting May 15, 2026. The notice amends earlier procedures so MHDV manufacturers may apply like automobile manufacturers already can.
Offsets Are Non‑Transferable and Limited Use
Offset amounts may be used only by approved importers tied to an approved manufacturer, only to reduce tariff liability under clauses 1, 7, or 12 of Proclamation 10984 or Proclamation 10908 on eligible parts, may not exceed the manufacturer's total tariff liability on covered parts, and may not be traded, sold, or transferred.
Application Documentation and 40‑Hour Burden
To get an offset, manufacturers must submit detailed documentation for each reporting period (production forecasts, vehicle values, prior-year production, tariff liability estimates, importer of record lists, and a sworn certification). The Paperwork Reduction Act estimate is about 40 hours per response to assemble and submit this information.
CBP Audits and Penalties for Noncompliance
CBP may audit entries that claim offsets and Commerce will share noncompliance information with CBP. If a manufacturer submits inaccurate, incomplete, or false information, penalties may be imposed and Commerce may adjust future offset amounts.
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