Here are some agency and other resources you can use to research payroll, tax, and business information in Missouri (MO). For other states, go to Payroll Resources.
| Information | Resource | 
|---|---|
| Contact | |
| Agency Websites | |
| Small Business Information | State of Missouri Employer's Tax Guide | 
| Forms | Form 2643, Missouri Tax Registration Application (PDF) Form 126, Missouri Registration Change Request (PDF) Form MODES-2699-5, Unemployment Tax Registration (PDF) Report on Change of Business Operations Kansas City Form RD-100 (PDF) Kansas City Online Earnings Tax St. Louis Form E-9
                             City of St. Louis Collector of Revenue
                             | 
| SUI Tax Rate Notice (Sample) | Move your mouse over the image to see an example Missouri SUI rate notice, or click here to open in a separate window. This is only an example — see your own notice for your specific rates. | 
| Employee State Withholding Certificate | Form MO W-4: Employee's Withholding Allowance Certificate | 
| New Hire Reporting | Missouri New Hire Reporting | 
| Workers' Compensation | Missouri Workers' Compensation | 
Payroll resources: Tools, supplies, websites
SetupDoneStill have questions? Search Payroll Help
ContactUsStill stuck? Contact us