247. The amount of a refund of municipal or school taxes due as a result of a circumstance contemplated in section 246, including interest computed in accordance with the second paragraph, must be paid within thirty days of the alteration to the roll.
The amount of the refund bears interest, for the period for which the excess of taxes has been collected, at the rate that could be exacted for tax arrears during that period.
This section also applies, with the necessary modifications, to a refund due under section 240 or 241.