NIM11575 | Class 1 NICs: reporting NICs in RTI: direct collection schemes
From HM Revenue & Customs · National Insurance Manual
Paragraphs 30 to 31A of Schedule 4 to the Social Security (Contributions) Regulations 2001 (SSCR 2001) (SI 2001 No 1004)
Since April 2014, employees who are responsible for reporting and paying their own Class 1 NICs under the above legislation should do so under RTI.
This legislation applies where:
the employer does not fulfil the conditions as to residence and presence in GB or Northern Ireland (see NIM33000), or
the employer is exempt from the provisions of the Social Security Contributions and Benefits Act 1992 by reason of an international treaty, for example workers employed in the UK by a foreign embassy