EU and UK compliance duties already in force in 2026

Each date on this page has passed, so the duty behind it applies now. The register holds the dates still to come.

Newest first. Each entry keeps its own page, which sets out the duty and the sources behind it.

In force since 28 October 2026 UK Autumn Budget 2026 Autumn Budget 2026 is delivered, the first from Chancellor John Healey. Sources: Professional Pensions; Grant Thornton
In force since 5 October 2026 UK Telling HMRC you need a Self Assessment return falls due Deadline to tell HMRC you need to file a Self Assessment return for the 2025 to 2026 tax year if you did not file last year. Source: gov.uk
In force since 3 October 2026 EU (Poland) Polish register of key and important entities closes to applications Deadline to apply for entry in the register of key and important entities under the amended National Cybersecurity System Act, which transposes NIS2. Sources: gov.pl, Ministry of Digitalisation; Traple Konarski Podrecki
In force since 1 October 2026 UK Building Safety Levy starts on residential building control applications The Building Safety Levy applies to building control applications submitted on or after this date for residential developments in England. Sources: The Building Safety Levy (England) Regulations 2025; Reed Smith
In force since 1 October 2026 EU (Greece) Greek B2B e-invoicing reaches every remaining resident taxpayer Phase two of mandatory B2B e-invoicing via myDATA covers all remaining resident taxpayers, with an adjustment period running to 31 December 2026. Sources: Marosa VAT; vatcalc
In force since 1 October 2026 UK Right to work checks extend to agency, gig and subcontract labour Right to work checks extend beyond employees to agency workers, individual subcontractors, zero-hours staff and gig and platform workers, under section 48 of the Border Security, Asylum and Immigration Act 2025. Section 48 also inserts a new section 15A into the Immigration, Asylum and Nationality Act 2006, treating a business that is contracted to provide work and subcontracts it as employing every individual who personally does that work, even where it has no contract with them and does not know who they are. Sources: DLA Piper; Howes Percival; Home Office, draft employer's guide to right to work checks and code of practice on preventing illegal working (seventh version), 16 July 2026, in force 1 October 2026; Border Security, Asylum and Immigration Act 2025, section 48; Border Security, Asylum and Immigration Act 2025 (Commencement No. 4) Regulations 2026, SI 2026/683, made 24 June 2026
In force since 1 October 2026 UK (England and Wales) Employment tribunal time limit doubles to six months The time limit for bringing most employment tribunal claims rises from three months to six months. Sources: gov.uk timeline update; Lewis Silkin
In force since 27 September 2026 EU Empowering Consumers Directive bans unproven green claims The Empowering Consumers for the Green Transition Directive applies: generic environmental claims without proof are banned, and sustainability labels must rest on a public scheme or a compliant certification scheme. Sources: EUR-Lex, Directive (EU) 2024/825; Cooley

Each entry names the sources it was checked against, never a single blog.

These are the dates a buyer or an inspector can ask about today. Behind each one sits a ComplianceSME system: a guided interview built from the instrument itself, which gives back the records that instrument asks for. The plans page shows which level carries which list.

See the plans Every deadline still to come