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Maryland Employer Tax Information

To sign up for Square Payroll in Maryland, you must be registered with the Comptroller of Maryland and the Maryland Department of Labor, Licensing and Regulation.

Agency Tax ID Tax ID Format
Comptroller of Maryland Maryland Central Registration Number XXXXXXXX (8 digits)
Maryland Department of Labor, Licensing and Regulation Maryland Division of Unemployment Insurance Employer Number XXXXXXXXXX (10 digits)

Maryland New Employer Registration

Comptroller of Maryland

  1. Register online.

  2. Allow approximately 5-7 business days to receive your Central Registration Number.

  3. If you need to receive your Central Registration Number more urgently or wish to speak with the Comptroller’s office, call 800-MD-TAXES.

Maryland Department of Labor, Licensing and Regulation

Online registration with the Comptroller of Maryland will automatically register you with the Maryland Department of Labor, Licensing and Regulation for state unemployment insurance taxes.

Maryland Unemployment Insurance Tax Rate

Once you receive your Maryland Division of Unemployment Insurance Employer Number, you can look up your tax rate online. See additional instructions below on how to locate your rate.

Find Your Maryland Tax ID Numbers and Rates

Maryland Central Registration Number

  1. Look up your Central Registration Number online by logging into the Comptroller of Maryland’s website.

  2. Locate your eight digit (XXXXXXXX) Central Registration Number on any previously filed Annual Reconciliation Return (Form MW-508).

  3. Call the Comptroller’s office: 800-MD-TAXES

Maryland Division of Unemployment Insurance Tax Rate

  1. Locate your ten-digit (XXXXXXXXXX) Unemployment Insurance Employer Number on any previously filed quarterly report (Form DLLR/DUI 15/16).

  2. Call the Maryland Department of Labor, Licensing and Regulation: 410-767-2413

Maryland Unemployment Insurance Tax Rate

  1. Look up your UI tax rate online.

  2. Call the Maryland Department of Labor, Licensing and Regulation: 410-767-2413

You are responsible for ensuring Square Payroll has the correct tax ID numbers and tax rates for your business. Please contact us if you need to update either of your tax ID numbers or your UI rate.

Maryland State Tax Details

Square Payroll processes the following per the frequency below to the listed state agencies:

Agency Name Frequency
Comptroller of Maryland Withholding Tax Payments (Form MW506) Note: The withholding tax payment made by Square Payroll services as both the payment voucher and filing. This form will not appear under Tax Forms in Dashboard. Per Pay Run
Annual Employer Withholding Reconciliation Return (MW508) Annually
Wage and Tax Statement (W-2) Annually
Division of Unemployment Insurance Unemployment Insurance Quarterly Contribution Report Payment Quarterly
Unemployment Insurance Quarterly Wage and Contribution Report (DLLR/DUI 15/16) Quarterly
State Directory of New Hires New Hire Registry Report Per New Employee

Learn how to locate or obtain an EIN.

Learn more about: Payroll

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