# The Teachers' Pensions Regulations 1997, Paragraph 1


(1) Subject to paragraph 2, the maximum length of the period in respect of which an election may be made under regulation C4 or C9 is
A-B, where—
A is the length of time specified in the second column of the Table below against the person’s adjusted age, and
B is the length of any additional period already purchased or in the course of being purchased by him.
TABLE
Adjusted age
Length of time
Under 50
30 years
50 and under 51
23 years
51 and under 52
16 years
52 and under 53
9 years
53 and under 54
2 years
54 and over
Twice the difference in days between the adjusted age and 55 years
(2) A person’s adjusted age—
(a) if the person has continued in pensionable employment since the start of his first such employment and has not been credited with reckonable service on the acceptance of a transfer value in respect of comparable British service, is his age at the start of his first pensionable employment, and
(b) in any other case, is
C-D, where—
C is the person’s age at the start of his most recent pensionable employment, and
D is the total of the time he had then spent in pensionable employment and the length of any reckonable service with which he has been credited on the acceptance of a transfer value in respect of comparable British service.

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Source: https://www.legislation.gov.uk/uksi/1997/3001/schedule/3/paragraph/1 (the official version)
Page: https://openlegislation.uk/teachers-pensions-regulations-1997/schedule-3/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.