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Support Center > State Tax Registration > MS State
You need two separate Tax Identification Numbers in the state of Mississippi:
  • State Income Withholding Tax
  • State Unemployment Insurance Tax
You can register online at the Department of Revenue (DOR) website. Contact the agency directly at 1-601-923-7700 for registration assistance or to check if a tax identification number is already assigned for your business.

Normally, you'll receive your Tax ID instantly after registering.
You can register online at the Department of Employment Security (DES) website. Contact the agency directly at 1-601-321-6000 for registration assistance or to check if a tax identification number is already assigned for your business.

Normally, you'll receive your MDES Employer Account Number instantly after registering.
You only need to know one tax rate assigned for the current year:
  • State Unemployment Insurance (UI) Contribution Rate
Your contribution rate will be assigned when you register and will be updated on an annual basis from the Department of Employment Security (DES). Contact the agency directly at 1-601-321-6000 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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