The information required for registration includes: 1. FEIN;. 2. Type of business and business code;. 3.To amend your payroll withholding account, you must use Form 11A - Amended Employer's Municipal Tax Withholding Statement. We can complete your tax return for you! Simply click here to download a "Tax Form Completion Request". Instructions: This form is used to request a change in the child support or child support-related matters. View contact information, frequently asked questions, income tax links and forms, and important changes to city income tax laws. The Dayton municipal income tax filing deadline for individual taxpayers is Monday, April 15, 2024. To amend your declaration of estimated tax for the current year, please complete Form L-ES. Learn more below about what this could mean for you beginning with tax year 2022.