From 1 July 2026, the UK's steel quota rules move into a separate operating track within the customs regime. The change sits alongside the wider steel trade package that replaced the previous safeguard after 30 June, with ministers presenting the new system as a tighter quota model backed by a 50% out-of-quota duty where quota access is exhausted. (gov.uk)
For traders, the most immediate drafting change is the split between the long-standing non-steel tariff quota document and a dedicated steel document. GOV.UK's reference page, updated on 30 June 2026, now lists Tariff Quotas reference document version 4.5, dated 12 May 2026, alongside Steel Tariff Quotas version 1.0, dated 23 June 2026 and entering into force on 1 July 2026. That matters because declarations, quota claims and internal customs controls now need to point to the correct table rather than treating all quota goods as if they sat in one source document. (gov.uk)
The steel regime remains administratively familiar in one respect: access is still structured through tariff-rate quotas allocated on a first come, first served basis, with country-specific and residual lines published by category. Government guidance says the quotas are apportioned quarterly from 1 July to 30 June, unused quota can roll into the next quarter but not into a new quota year, and goods imported outside quota face a 50% tariff by value. (gov.uk)
Where the rules become tighter is on downstream processing quota access. For Category 1 authorised use products, HMRC guidance states that access is via a single global quota with a 40% cap in each quarter for any individual country or territory. Once either the global quota or the country cap is exhausted, the out-of-quota 50% duty applies. In practical terms, that narrows the room for a single origin to dominate use of the authorised-use steel quota and raises the value of close quota monitoring for processors and customs intermediaries. (gov.uk)
The authorised use paperwork has also changed at the same time. The GOV.UK reference pages were updated on 30 June to publish Authorised Use: Eligible Goods and Authorised Uses version 2.25 and Authorised Use: Eligible Goods and Rates version 1.25, both entering into force on 1 July 2026. HMRC's steel guidance also makes clear that Category 1 quota access is limited to goods declared under authorised use and used to transform listed steel products into specified outputs. That means the legal route claimed on the customs declaration now matters just as much as the commodity code. (gov.uk)
There is, however, a limited transitional window for some existing contracts. Government guidance says relevant steel goods under contract before 14 March 2026 are fully exempt from the 50% out-of-quota duty until 30 September 2026, provided the conditions are met. That gives some importers short-term cover for pre-announcement commitments, but it does not remove the need to align live entries with the new quota order numbers and quarterly allocations now published for the steel regime. (gov.uk)
The wider policy rationale is set out in the Government's steel strategy and the explanatory memorandum to the linked tariff instrument. Ministers say the measures are intended to replace the expiring safeguard with smaller quotas, broader coverage of steel categories made in the UK, and stronger protection for domestic production while still allowing imports where necessary. For customs teams, the immediate compliance task is to update reference documents, re-check origin exposure and test whether any shipment is moving from in-quota treatment to a 50% duty position from 1 July. (gov.uk)