The Iowa Department of Revenue has granted a 30-day extension and suspension of any penalty or interest for taxpayers whose principal residence or business is located within the flood disaster areas designated by Gov. Kim Reynolds, the department announced Tuesday. The announcement covers all tax types whose payment is due on or before March 31. Reynolds issued disaster declarations for 41 counties affected by recent flooding: Adair, Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee, Clay, Clayton, Crawford, Dallas, Delaware, Dickinson, Emmet, Fayette, Franklin, Fremont, Guthrie, Hancock, Hardin, Harrison, Humboldt, Ida, Iowa, Kossuth, Mills, Monona, Montgomery, O’Brien, Page, Palo Alto, Plymouth, Pottawattamie, Shelby, Sioux, Tama, Webster, Winnebago, Winneshiek, Woodbury, Worth and Wright.