# The Teachers' Pensions Regulations 1997, Paragraph 28


(1) The rate of the annual pension is
(A80×B)+C5, where—
A is the average annual rate of the person’s salary during his admitted service,
B is the length of the admitted service, expressed in years and any fraction of a year, and
C is so much of
(A80×B) as is attributable to admitted service before 1st April 1962.
(2) The amount of the lump sum is
(A30×D)+(3×A80×E), where—
A is the same as in sub-paragraph (1) and—
D is the length, expressed in years and any fraction of a year, of admitted service before 1st April 1963, and
E is the length, so expressed, of admitted service after 31st March 1963.

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Source: https://www.legislation.gov.uk/uksi/1997/3001/schedule/10/paragraph/28 (the official version)
Page: https://openlegislation.uk/teachers-pensions-regulations-1997/schedule-10/paragraph-28
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.