There are 3 required tax items you’ll need in order to get setup for payroll.
Requirement | Format | Agency |
Withholding Account Number | XXXXXXXX (8 digits) | |
Employer Account Number | XX-XXXXX-X-XX (10 digits) | |
Contribution Rate | X.X% |
How to register:
Withholding Account Number and Employer Account Number
New businesses can register online. Your Withholding Account Number and Employer Account Number will be generated within 2 weeks.
St. Louis Businesses
You are required to register as a new business with the City of St. Louis Collector of Revenue for your St. Louis Earnings Tax and St. Louis Payroll Expense Tax.
Kansas City Businesses
You are required to register as a new business with the Kansas City Revenue Division for your Earnings Tax requirements.
Contribution Rate
This information will be mailed to you by the Department of Labor and Industrial Relations in November.
How to locate these numbers if you’re already registered:
Your Withholding Account Number will be on any document mailed to you by the Department of Revenue.
Your Employer Account Number will be on previous reports and notices from the Department of Labor and Industrial Relations.
If you need assistance with your Employer Account Number or Contribution Rate, please contact the Department of Labor and Industrial Relations at (573) 751-1995.
If you need assistance with your Withholding Account Number, please contact the Department of Revenue at (573) 751-8750.