Missouri Payroll Tax and Registration Guide

Account Number(s) Needed:

Companies who pay employees in Missouri must register with the MO Department of Revenue for a Withholding Account Number and the MO Department of Labor and Industrial Relations for an Employer Account Number. Apply for both online at the MO Online Business Registration Portal.

MO Withholding Account Number: 99999999 (8 digits)

MO Employer Account Number: 999999-9-999-9999 (14 digits)

Required Payroll Documentation:

Withholding 

  • MO-941 (Employer's Return of Income Taxes Withheld): This report is a good source of information to balance state tax withheld amounts from previous quarters.

Unemployment

  • MO-DES-4 (Quarterly Contribution and Wage Report) and MO-DES-108 (Quarterly Employee Wage Listing): This return is a good source of information to use to balance employee gross wages paid and employer contributions made in prior quarters.

Third Party Access /POA Needed:

No 

Local Income Taxes Imposed:  

Yes

State Resources:

Visit state resources for specific tax rates and wage details

      Dept. of Labor for unemployment taxes

      Dept. of Revenue for withholding taxes




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