Importing auto parts from United Kingdom into the US in 2026 means navigating multiple tariff layers. The current total effective rate runs approximately 10% on most auto parts imports under HTS chapters 87. The reciprocal rate on United Kingdom did not change after SCOTUS — IEEPA refunds are limited to importers who specifically paid the temporary IEEPA layer in 2025.
The current rate stack on auto parts from United Kingdom breaks down as: the 10% Section 122 reciprocal tariff (effective February 24, 2026, set to expire July 24, 2026 unless extended), plus the MFN duty rate that depends on the specific HTS code, plus any product-specific surcharges.
For most importers, the 10% total represents a meaningful change from the pre-SCOTUS regime, when the IEEPA reciprocal layer pushed United Kingdom auto parts imports to 10% effective. SCOTUS struck down the IEEPA reciprocal layer on February 20, 2026 in Learning Resources v. Trump, opening a refund pool of approximately $166 billion for affected importers.
Under the UK-US Economic Prosperity Deal, UK steel/aluminum is at 25% (vs 50% from most other countries) and most other UK goods carry the 10% Section 122 layer.
Bottom line for auto parts importers from United Kingdom: confirm your HTS classification, account for the Section 122 layer (and Section 232/301 if applicable), and — if you paid IEEPA duties in 2025 — check your refund eligibility before the Phase 1 windows close on a rolling basis through Q3 2026.
Calculate Your Auto Parts Duty from United Kingdom
Frequently Asked Questions
What is the total tariff rate on auto parts from United Kingdom in 2026?
The total effective US tariff on auto parts from United Kingdom is approximately 10%, composed of the 10% Section 122 reciprocal tariff plus the MFN base rate plus any product-specific surcharges, plus Section 232 steel/aluminum duties of 25% where applicable.
Are auto parts imports from United Kingdom subject to IEEPA refunds?
Refunds are limited. The reciprocal rate did not change meaningfully for United Kingdom. Importers who specifically paid the temporary IEEPA layer in 2025 may still file through CAPE, but the refund delta is small.
Does Section 232 apply to auto parts from United Kingdom?
Section 232 applies to specific product categories (steel, aluminum, autos, copper, semiconductors, lumber) regardless of country. For auto parts specifically, Section 232 generally does not apply unless the goods fall under one of those covered categories.
