Maryland
Last Updated June 17, 2026.
Maryland employers are responsible for payroll tax withholding, unemployment insurance, and employment reporting compliance. The links below provide direct access to key state payroll resources.
State Tax Guidelines
Comptroller of Maryland, Revenue Administration Division – Withholding Tax
Agency Information
Add to existing company setup
Submit a request to your service team to add MD (withholding) 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.
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Power of Attorney – POA is required, please obtain the prefilled form from your client service representative.
Register a new company
Employers can register here for both withholding and unemployment accounts. Select Quick Links then Select Online Combined Registration Application. Complete registration . Once completed you will receive your account number and deposit frequency within 5-7 days.
Maryland Department of Labor, Licensing, and Regulation, Division of Unemployment Insurance – Unemployment tax
Agency Information
Add to existing company setup
Submit a request to your service team to add MDSUI (unemployment) to your company setup. Please include the below with your request:
- 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
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