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Support Center > State Tax Registration > MD State
You need two separate Tax Identification Numbers in the state of Maryland:
  • State Income Withholding Tax - Central Registration Number (CRN)
  • State Unemployment Insurance Tax - Employer Account Number
You can register for both Tax Identification Numbers online at the Comptroller of Maryland website. Contact the agency directly at 1-800-638-2937 for registration assistance or to check if a tax identification number is already assigned for your business.

The Central Registration Number (CRN) is an 8-digit number.

Your Employer Account Number is a 10-digit number.
You only need to know one tax rate assigned for the current year:
  • State Unemployment Contribution Rate
Your contribution rate will be assigned when you register and will be updated on an annual basis from the Department of Labor. Contact the agency directly at 1-410-767-2413 to verify your current rate.
Send any tax identification number or tax rate updates to your Account Executive or email [email protected].
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