📝 Overview
This guide covers state tax information for employers running payroll in Mississippi. Use the sections below to find agency contact information, supported tax filings, and the account details required for tax setup.
⚙️ Mississippi Tax Information
Click the arrow to view Withholding information
Click the arrow to view Withholding information
Agency Information
Website: Mississippi Department of Revenue
Phone: (601) 923-7088
Supported Tax Filings
Employer's Withholding Tax Return (89-105)
Wage & Tax Statement (W-2)
Required for Tax Setup
Employer Account Number (10 digits, e.g., 12-34567-8-91)
Filing Frequency (Monthly or Quarterly)
Third Party Administrator (TPA) Access
To grant DaySmart Payroll access, the following two items are needed:
Mississippi Employer Account Number
DOR Letter ID
Where to find your DOR Letter ID
The DOR Letter ID can be found in either of these places:
Your Mississippi online portal
The filing requirements letter received after registering with the state
If you cannot locate the DOR Letter ID, contact the Mississippi Department of Revenue directly at (601) 923-7700.
Click the arrow to view Unemployment Insurance information
Click the arrow to view Unemployment Insurance information
Agency Information
Website: Mississippi Department of Employment Security
Phone: (601) 493-9427
Supported Tax Filings
Unemployment Employer's Quarterly Wage Report (UI-2/3)
Required for Tax Setup
Unemployment Employer Account Number (8 digits, e.g., 1234-5678)
Unemployment Total Contribution Rate (X%)
❓ Frequently Asked Questions (FAQs)
Find answers to common questions or additional details that may not be covered in the main instructions.
Click the arrow to view frequently asked questions
Click the arrow to view frequently asked questions
What is a DOR Letter ID and where do I find it?
Click the arrow to see the answer
Click the arrow to see the answer
The DOR Letter ID is a reference number issued by the Mississippi Department of Revenue and is required for DaySmart Payroll to be granted withholding access on your behalf. You can find it in your Mississippi online tax portal or on the filing requirements letter you received after registering with the state. If you cannot locate it, contact the DOR at (601) 923-7700.
Where do I find my Mississippi withholding Employer Account Number?
Click the arrow to see the answer
Click the arrow to see the answer
Your Mississippi withholding Employer Account Number is a 10-digit number formatted as 12-34567-8-91. It is assigned by the Mississippi Department of Revenue when you register and can be found on agency correspondence or by logging into your Mississippi TAP account.
How do I find my Mississippi unemployment account number and contribution rate?
Click the arrow to see the answer
Click the arrow to see the answer
Your unemployment account number and total contribution rate are assigned by the Mississippi Department of Employment Security when you register. Your rate is included in an annual rate notice. If you need to look these up, log into your MDES account or contact the agency at (601) 493-9427.