13(1)For the first alternatively secured pension year, the basis amount is the annual amount of the relevant annuity which could have been purchased by the application of the sums and assets representing the member’s alternatively secured pension fund on the date on which the member first became entitled to alternatively secured pension in respect of the arrangement.
(2)For each other alternatively secured pension year, the basis amount is the annual amount of the relevant annuity which could have been purchased by the application of the sums and assets representing the member’s alternatively secured pension fund on the nominated date.
(3)“The nominated date” is such day within the period of 60 days ending with the first day of the alternatively secured pension year as is nominated by the scheme administrator (or, if no day is nominated by the scheme administrator, is the first day of the alternatively secured pension year).
(4)Paragraph 14 defines “relevant annuity”.