151.13 AMENDED RETURNS.
   (a)   Where necessary an amended return shall be filed in order to report additional income and pay any additional tax due, or claim a refund of tax overpaid, subject to the requirements, limitations, or both, contained in § s 151.18 , 151.19 , 151.20 , 151.21 , 151.22 and 151.23 hereof. Such amended return shall be on a form obtainable on request from the Administrator or on such other form as is permitted by law. A taxpayer may not change the method of accounting, filing status or method of apportionment of net profits after the due date for filing the original return.
 
   (b)   Within three months from the final determination of any Federal tax liability affecting the taxpayer's Municipal tax liability, such taxpayer shall make and file an amended Municipal return showing income subject to the Municipal tax based upon such final determination of Federal tax liability, and pay any additional tax shown due thereon or make claim for refund of any overpayment.
(Ord. 512. Passed 12-15-69; Am. Ord. 2345. Passed 6-8-06.)