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Find your Missouri tax account info

Income tax withholding

If you've run payroll in the past in MO, you can find your Missouri Tax ID Number on the Employer's Return of Income Taxes Withheld (Form MO-941) received from the MO Department of Revenue. If you're unsure you can call the agency at (573) 751-3505. 

State unemployment tax

If you've run payroll in the past in MO, you can find your Unemployment Account Number on the Notice of Liability sent to you by the Department of Labor and Industrial Relations, or on your Quarterly Contribution and Wage Report (Form MODES-4). The account number contains 10 digits and is formatted as follows: 00-00000-0-00. 

Unemployment insurance tax rate

Your Unemployment Insurance tax rate can be found on the most recent Notice of Liability you received from the Department of Labor and Industrial Relations. It ranges from 0%–9.765% with a wage base of $12,500 in 2018. You can also get your account number and rate by calling the agency at (573) 751-3215.