Effective 2024, no withholding is required for employees under the age of 18 for any Ohio municipality. Ohio employers must withhold state income tax from the pay of employees who are Ohio residents.What follows is a general guide to Ohio's open-government laws – the 2024 Sunshine Laws Manual. DOR has created a withholding tax calculator to assist employers in computing the correct amount of Kentucky withholding tax for employees. CRISP will be your launch pad for Columbus taxes. OSCPA members with understanding the post-2021 Ohio municipal income. We ask for the information on this form to carry out the Internal Revenue laws of the United States. Internal. Broad Street, Columbus, Ohio 43215. How should I form my business entity? Forms And Instructions ; Form 11.