# The Social Security (Contributions) Regulations 2001, Paragraph 17: Interest on overdue earnings-related contributions or Class 1B contributions

Extent: E+W+S+N.I.

(1) Subject to sub-paragraph (4A) and paragraph 21, where, in relation to the year ended 5th April 1993 or any subsequent year, an employer has not—
(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) paid a Class 1B contribution by 19th October or, if payment is made by an approved method of electronic communications in respect of earnings paid after 5th April 2004, not later than 22nd October next following the year in respect of which it was due,
any contribution not so paid shall carry interest at the rate applicable under paragraph 6(3) of Schedule 1 to the Act from the reckonable date until payment.
(2) Interest payable under this paragraph shall be recoverable as if it were an earnings-related contribution or a Class 1B contribution, as the case may be, in respect of which an employer is liable under paragraph 10, 11, or 13 to pay to HMRC.
(3) For the purposes of this paragraph—
(a) “employer” means, in relation to a Class 1B contribution, the person liable to pay such a contribution in accordance with section 10A of the Act;
(b) “the reckonable date” means, in relation to—
(i) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(ii) a Class 1B contribution, the 19th October or, if payment was made by an approved method of electronic communications in respect of earnings paid after 5th April 2004, the 22nd October next following the year in respect of which it was due.
(iii) a contribution payable in respect of retrospective earnings relating to a tax year which is closed at the time that the relevant retrospective contributions regulations come into force, the 14th day after the end of the tax month immediately following the tax month in which those regulations came into force.
(4) A contribution to which sub-paragraph (1) applies shall carry interest from the reckonable date even if the date is a non-business day within the meaning of section 92 of the Bills of Exchange Act 1882.
(4A) Where an employer has not paid contributions in respect of retrospective earnings relating to a closed tax year by the date set out in paragraph 11A, any contribution not so paid shall carry interest at the rate applicable under paragraph 6(3) of Schedule 1 to the Act from the reckonable date until payment.
(5) A certificate of HMRC that, to the best of their knowledge and belief, any amount of interest payable under this paragraph has not been paid by an employer or employee is sufficient evidence that the amount mentioned in the certificate is unpaid and due to be paid, and any document purporting to be such a certificate shall be presumed to be a certificate until the contrary is proved.
(6) HMRC may prepare a certificate certifying the total amount of interest payable in respect of the whole or any component of a combined amount without specifying what component of the combined amount the interest relates to.
Sub-paragraph (5) shall apply, with any necessary modifications, to the certificate.
(7) For the purposes of this paragraph “combined amount” has the meaning given in paragraph 15(1A).

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Source: https://www.legislation.gov.uk/uksi/2001/1004/schedule/4/paragraph/17 (the official version)
Page: https://openlegislation.uk/social-security-contributions-regulations-2001/schedule-4/paragraph-17
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.