Maryland

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Agency Information

Comptroller of Maryland, Revenue Administration Division – Withholding Tax
Maryland Department of Labor, Licensing, and Regulation, Division of Unemployment Insurance – Unemployment tax

Add to existing company setup

Submit a request to your service team to add MD (withholding) and/or MDSUI  (unemployment) to your company setup.  Please include the below with your request:  

  • Withholding – Withholding account number and Deposit Frequency.  If you’re unsure of your deposit frequency or account number you can call the agency at 410-260-7980.
  • Unemployment – Account Number and Tax rate.  This can be found on a Tax Rate Notice or the Quarterly contribution report.  If you’re unsure of your tax rate or account number, you can call the agency at 410-767-2414.
  • Power of Attorney- POA is required, please obtain the prefilled form from your client service representative.

Register a new company

Comptroller of Maryland, Revenue Administration Division &

Maryland Department of Labor, Licensing, and Regulation, Division of Unemployment Insurance

Employers can register for both withholding and unemployment accounts online at https://interactive.marylandtaxes.com/webapps/comptrollercra/entrance.asp.  Select Begin Registration at the bottom of the page.  Follow the prompts to register your business.  Once completed you will receive your account number and deposit frequency 5-7 days after registering.  Contact taxhelp@comp.state.md.us after 5 days to receive your account number earlier.

Third Party Registration and/or Power of Attorney Instructions

Power of Attorney is required, please obtain the prefilled form from your client service representative.