(a) An incentive period pertaining to an eligible project is a period of 10 consecutive tax years specified in the agreement pertaining to the project.
(b) An incentive period may not begin:
(1) earlier than January 1 of the first tax year following the construction completion date; or
(2) later than January 1 of the first tax year following the 10th anniversary of the date the agreement is entered into.

(c) Subject to Subsection (b), the beginning date of an incentive period specified in an agreement pertaining to an eligible project may be deferred if the applicant projects that the applicant will not satisfy the minimum investment requirement applicable to the project by the end of the first tax year of the incentive period. The incentive period may be deferred until January 1 of the second tax year following the construction completion date. The deferral of an incentive period under this subsection does not affect the date on which the incentive period ends as prescribed by the agreement. An applicant that is a party to an agreement for which the beginning date of the incentive period is deferred as authorized by this subsection must provide notice of the deferral to the comptroller. The notice must include the reason for the deferral.
(d) Subject to Subsection (b), an applicant may propose to modify the beginning and ending dates of the incentive period as provided by this subsection. The applicant shall provide notice of the proposed modification to the comptroller, the governor, and the school district not later than the 90th day before the first day of the incentive period specified in § 403.612(b)(3) or as proposed to be modified, whichever is earlier. The applicant shall revise the most recent economic benefit statement as necessary to reflect the proposed change to the incentive period. The applicant must include the revised economic benefit statement with the notice provided to the comptroller, the governor, and the district under this subsection. The comptroller shall make the finding required by § 403.609(b)(2) regarding the project as proposed to be modified or determine that the finding cannot be made. The comptroller shall notify the governor, the district, and the applicant of the comptroller’s finding or determination not later than the 60th day after the date the comptroller receives notice from the applicant of the proposed modification. The incentive period for the project may not be modified if the comptroller determines that the finding required by § 403.609(b)(2) regarding the project as proposed to be modified cannot be made or if the governor or the district objects to the proposed modification.