# The Social Security (Contributions) (Amendment) Regulations 2025 S.I. 2025/144 · made 10 February 2025 These Regulations amend Schedule 4A (real time returns) of the Social Security (Contributions) Regulations 2001 (S.I. 2001/1004). Made under: Social Security Contributions and Benefits Act 1992 (Section 175, Schedule 1 paragraph 6) PDFs: Printed copy https://openlegislation.uk/social-security-contributions-amendment-regulations-2025/pdf/uksi_20250144_en.pdf; UK Explanatory Memorandum https://openlegislation.uk/social-security-contributions-amendment-regulations-2025/pdf/uksiem_20250144_en_001.pdf ## Introductory text Social Security Made 10th February 2025 Laid before Parliament 11th February 2025 Coming into force 6th April 2025 The Commissioners for His Majesty’s Revenue and Customs make these Regulations in exercise of the powers conferred by section 175(3) and (4) of, and paragraph 6(1) of Schedule 1 to, the Social Security Contributions and Benefits Act 1992 and now exercisable by them. ## 1 Citation and commencement These Regulations may be cited as the Social Security (Contributions) (Amendment) Regulations 2025 and come into force on 6th April 2025. ## 2 Amendment of the Social Security (Contributions) Regulations 2001 (1) The Social Security (Contributions) Regulations 2001 are amended as follows. (2) In Schedule 4A (real time returns)— (a) after paragraph 7 insert— “7A. (1) Where the category letter or, as the case may be, one of the category letters in relation to the employee (being the appropriate letter or letters indicated by HMRC) is for an employee working within a freeport or investment zone, the postcode for the address in a special tax site where the employee works or, where no postcode is assigned, the alternative code provided by HMRC. (2) For the purposes of this paragraph “freeport” and “investment zone” have the meanings given in section 113(5) of the Finance Act 2021 and “special tax site” has the meaning given by section 113(3) of the Finance Act 2021 (designation of special tax sites).”. (b) in paragraph 11 after “paragraphs 6, 7” insert “, 7A”. ## Signature Jim Harra Justin Holliday Two of the Commissioners for His Majesty’s Revenue and Customs 10th February 2025 ## Explanatory note (This note is not part of the Regulations) These Regulations amend Schedule 4A (real time returns) of the Social Security (Contributions) Regulations 2001 (S.I. 2001/1004). They add a requirement for employers who are claiming the zero rate of secondary Class 1 (employer) National Insurance contributions in respect of employees who work in special tax sites in freeports or investment zones in Great Britain, to include the postcode for the address at which the employee works in their Full Payment Submission. That relief is provided for by the National Insurance Contributions Act 2022 (c. 9) and claims are subject to the conditions in section 2 of that Act, in particular that the employer reasonably expects that the employee will spend 60% or more of their working time in a single special tax site in which the employer has business premises. That condition is subject to the exceptions in the Social Security Contributions (Freeports) Regulations 2022 (S.I. 2022/313). Where the special tax site has not been assigned a postcode, an officer of HMRC will provide the employer with an alternative code to use until a postcode is assigned. A Tax Information and Impact Note covering this instrument will be published on the website at https://www.gov.uk/government/collections/tax-information-and-impact-notes-tiins. --- Source: https://www.legislation.gov.uk/uksi/2025/144 (the official version) Page: https://openlegislation.uk/social-security-contributions-amendment-regulations-2025 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.