PackUK has introduced a fixed resubmission deadline of 1 September 2026 for 2025 packaging data submitted by producers liable for packaging extended producer responsibility, or pEPR, fees. According to the government notice, the change applies across the four UK nations and gives affected producers a defined period in which to correct errors. The window runs from the main reporting deadline of 1 April 2026 to 1 September 2026. PackUK's stated purpose is to allow confirmed fees and Notices of Liability to be issued later in 2026 on a stable data set, with no further recalculations or changes expected.
The change creates a clear cut-off for fee-setting. After 1 September 2026, regulators will continue compliance monitoring, but any further producer data resubmissions will not affect Notices of Liability or disposal fees, according to PackUK's update. For producers, that distinction is important. Data can still be corrected after the deadline, but late corrections will no longer change the amounts used for Year 2 billing under the scheme.
PackUK had already published illustrative Year 2 fees in December 2025. Those figures were always provisional and remain subject to change until final resubmissions are processed. The government notice says PackUK does not intend to publish a further set of illustrative fees. Instead, the next publication later in 2026 will be the confirmed 2026 to 2027 producer fees, and those figures will be used to calculate Notices of Liability.
The immediate task for liable producers is straightforward: any correction to 2025 packaging data that could affect fees needs to be submitted by 1 September 2026. Businesses that report through compliance schemes are being advised to check directly with those schemes on what information is needed and the timetable they are working to. This matters operationally as much as financially. The September deadline is now the final point at which businesses can influence the figures that feed into formal liability notices later in the year.
PackUK has also confirmed that the Year 1 payment approach will continue. Once Notices of Liability are issued, producers will have 50 calendar days to pay, with an instalment option still available. That gives finance and compliance teams a clearer sequence. The current phase is about checking whether 2025 data needs correction; the later phase will be about settling confirmed liabilities against the final fee schedule.
The notice links the new deadline to a wider attempt to improve data stability and reduce fee volatility within the year. PackUK says the aim is to give businesses greater confidence for planning while also giving local authorities more certainty over the pEPR payments they are due to receive. It also indicates that future deadlines affecting Notice of Liability calculations could move earlier. For the current cycle, however, the key date is fixed: 1 September 2026. Defra's published EPR Helpdesk contact details remain 0300 060 0002 and EPRCustomerService@defra.gov.uk for producers needing further support.