(a) If a refund of a tax provided by § 11.431(b), 26.07(g), 26.075(k), 26.15(f), 31.11, 31.111, or 31.112 is paid on or before the 60th day after the date the liability for the refund arises, no interest is due on the amount refunded. If not paid on or before that 60th day, the amount of the tax to be refunded accrues interest at a rate of one percent for each month or part of a month that the refund is unpaid, beginning with the date on which the liability for the refund arises.
(b) For purposes of this section, liability for a refund arises:
(1) if the refund is required by § 11.431(b), on the date the chief appraiser notifies the collector for the taxing unit of the approval of the late homestead exemption;
(2) if the refund is required by § 26.07(g) or 26.075(k), on the date the results of the election to approve or reduce the tax rate, as applicable, are certified;
(3) if the refund is required by § 26.15(f):
(A) for a correction to the tax roll made under § 26.15(b), on the date the change in the tax roll is certified to the assessor for the taxing unit under § 25.25; or
(B) for a correction to the tax roll made under § 26.15(c), on the date the change in the tax roll is ordered by the governing body of the taxing unit;
(4) if the refund is required by § 31.11, on the date the auditor for the taxing unit determines that the payment was erroneous or excessive or, if the amount of the refund exceeds the applicable amount specified by § 31.11(a), on the date the governing body of the taxing unit approves the refund;
(5) if the refund is required by § 31.111, on the date the collector for the taxing unit determines that the payment was erroneous; or
(6) if the refund is required by § 31.112, on the date required by § 31.112(d) or (e), as applicable.

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