(a) If a City resident has paid a municipal income tax on the same income to another municipality, such resident may claim a credit of the amount of income tax paid to such other municipality, but not in excess of the tax assessed by this chapter.
(b) If a City resident is entitled to a credit for taxes paid another municipality, such resident is required to file a return or form in such manner as the Administrator may prescribe. If such resident fails, neglects or refuses to file such return or form, he shall not be entitled to such credit and shall be considered in violation of this chapter for failure to file a return and make payment of taxes due under the provisions of this chapter.
(c) Any claim for credit for income taxes paid another municipality on the same income taxable under the provisions of this chapter shall be filed with the Administrator on or before December 31 of the year following that for which such credits claimed. Failure to file such claim within such time shall render such credit null and void.