According to PackUK's gov.uk notice, a new resubmission deadline of 1 September 2026 will apply to 2025 packaging data filed by producers that pay packaging extended producer responsibility, or pEPR, fees. PackUK is administering the change on behalf of all four UK nations. The announcement gives the 2025 reporting cycle a fixed correction point. Producers that need to amend submitted data will have until 1 September 2026 to do so, following the main reporting deadline of 1 April 2026.
That creates a five-month window for correcting errors and resubmitting returns. The stated aim is to allow fee-setting for Year 2 of the scheme to proceed later in 2026 without further recalculations once the resubmission period has closed. For regulated businesses, the message is straightforward. The period between April and September is the final opportunity to change the dataset that will feed into confirmed charges.
After 1 September 2026, regulators will continue compliance monitoring, but PackUK says later producer data resubmissions will no longer change Notices of Liability or disposal fees. PackUK will instead use the data available at the cut-off to publish confirmed producer fees for 2026 to 2027 and issue Notices of Liability later in the calendar year. In practical terms, a Notice of Liability is the formal statement of what a producer owes under the scheme. Once issued, businesses should not expect subsequent data corrections to reopen the fee calculation for that charging cycle.
PackUK had already published illustrative Year 2 fees in December 2025. Those figures remain provisional until the final resubmission window closes, but the government notice says PackUK does not intend to publish any further illustrative fee set before the confirmed 2026 to 2027 charges are released. Payment terms will remain aligned with Year 1. Producers will have 50 calendar days to pay once billed, and instalment arrangements will still be available.
For producers, the immediate task is to review 2025 packaging data and resubmit by 1 September 2026 where corrections are needed. Where reporting is done through a compliance scheme, PackUK advises producers to confirm with that scheme what information is required and the timetable for submitting it. The cut-off does not remove the duty to keep reporting accurate data after 1 September. PackUK states that further resubmissions must still be made so that records are as accurate as reasonably possible for recycling obligations, even though those later changes will not alter the relevant Notice of Liability or disposal fee.
The government says the change is intended to improve data stability and reduce fee movement within the year. That is meant to give businesses greater certainty for budgeting and to give local authorities a firmer basis for planning around pEPR payments. This matters because pEPR shifts part of packaging waste costs to producers, while local authorities depend on stable payment assumptions when planning services. A fixed resubmission deadline does not remove compliance checks, but it does separate fee-setting from later data adjustments.
PackUK also signals that future years may bring an earlier deadline for data changes to affect Notice of Liability calculations. That points to a tighter annual timetable, with confirmed fees potentially being set earlier in the reporting year if that approach is carried forward. For organisations that need administrative support, the government notice directs enquiries to the EPR Helpdesk on 0300 060 0002 or by email at EPRCustomerService@defra.gov.uk. For now, the deadline that matters is 1 September 2026.