99.—(1) Where a certificate of deferment has been issued in respect of any earner under regulations 91 to 98—
(a)the profits or gains of that earner, in respect of which contributions would be payable under section 15 of the Act (Class 4 contributions), but for the issue of the certificate of deferment, shall be assessed under the Income Tax Acts for each year to which the certificate relates, in all respects as if no such certificate had been issued, provided that (without prejudice to the validity of the assessment of the amount of the earner’s profits or gains and his right of appeal against that assessment) no figure representing contributions payable shall be shown in any such assessment or on any notice of such assessment nor shall any of the provisions of the Income Tax Acts (as applied or modified by section 16 of, and Schedule 2 to, the Act) as to collection, repayment or recovery apply to any such assessment; and
(b)the Board shall be responsible for the calculation, administration and recovery of Class 4 contributions ultimately payable in respect of the profits or gains so assessed for any year of assessment to which the certificate of deferment relates.
(2) Any such calculation shall be subject to the provisions of regulations 94 and 100 and for the purpose of the calculation where the total amount of the profits or gains for any year of assessment to which the certificate relates includes a fraction of £1, that fraction shall be disregarded.
(3) For the purpose of enabling the Board to make the calculation, they shall certify the amount of the earner’s profits or gains, computed under Schedule 2 to the Act for each year of assessment.
This is subject to paragraph (4) and to the limitation imposed by section 17(4) of the Act (which provides that a certificate under section 17 may relate to a person’s profits or gains only to the extent that they do not exceed the higher of the two sums specified in section 15(3)).
(4) Notwithstanding paragraph (3), the Board shall not be required to certify the amount referred to in that paragraph unless the assessment made under this regulation has become final and conclusive or, if an appeal is pending against the assessment—
(a)the Board and the earner have come to an agreement, whether in writing or otherwise; or
(b)it appears to the General Commissioners or the Special Commissioners;
that the amount of the earner’s profits or gains so computed is not less than the higher of the two money sums specified in section 15(3) of the Act.
(5) The Board, on making the calculation referred to in paragraph (3), shall give notice to the earner of the amount of the contributions due from him under section 15 of the Act for each year to which the certificate of deferment relates.
(6) The earner shall pay to the Board those contributions within the period of 28 days from the receipt of the notice from them, unless before the expiry of that period the earner—
(a)has appealed out of time or made a claim or appealed against the decision on a claim made under the Income Tax Acts on any matter concerning the amount of the profits or gains certified as mentioned in paragraph (3), and has notified the Board accordingly; or
(b)has appealed against a decision made under section 8 of the Transfer Act relating to those contributions.
(7) If the amount of any assessment made under this regulation for any year is altered for any reason, or if a further assessment is made in respect of that year, subsequently to the certification by the Board of the amount of an earner’s profits or gains computed in accordance with the provisions of this regulation and that alteration or further assessment affects the amount of the earner’s profits or gains so computed they shall immediately, or in the case of a further assessment when that further assessment has become final and conclusive, certify to the earner the altered amount of the earner’s profits or gains.