13(1)The general rule is that a tonnage tax election remains in force until it expires at the end of the period of [the relevant number of years] beginning—U.K.
(a)in the case of a company election, with the first day on which the election has effect in relation to the company;
(b)in the case of a group election, with the first day on which the election has effect in relation to any member of the group.
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[(1A)“The relevant number of years” means—
(a)in relation to a tonnage tax election made before 1 April 2022, ten years;
(b)in relation to a tonnage tax election made on or after 1 April 2022, eight years.
(1B)Sub-paragraph (1) is subject to the following exceptions.]
(2)A tonnage tax election ceases to be in force—
(a)in the case of a company election, if the company ceases to be a qualifying company;
(b)in the case of a group election, if the group ceases to be a qualifying group.
[(2A)A tonnage tax election ceases to be in force—
(a)in the case of a company election, if a withdrawal notice in respect of the company takes effect under paragraph 15A;
(b)in the case of a group election, if a withdrawal notice in respect of the group takes effect under that paragraph.]
(3)A tonnage tax election may also cease to be in force under—
(a)the provisions of Part V of this Schedule, or
(b)the provisions of Part XII of this Schedule relating to mergers and demergers.
(4)This paragraph has effect subject to paragraph 15(4) (election superseded by renewal election).