Follow the steps to complete the MS DoR 89-350 form online.

1. Click ‘Get Form’ button to obtain the form and open it in the editor.
2. Begin by entering your full name in the designated field labeled 'Employee's Name'. This is necessary for identification purposes.
3. Provide your Social Security Number (SSN) in the field labeled 'SSN'. Ensure that this information matches your official documents.
4. Fill in your residence address, including the number and street, in the 'Employee's Residence' section.
5. Choose your marital status by checking the appropriate box under 'Marital Status'. You can select 'Single', 'Married', or 'Head of Family'.
6. Claim your personal exemption by entering the appropriate amount based on your marital status and any dependents in the designated fields. Follow the provided instructions for each category.
7. If applicable, enter the number of dependents you are claiming in 'Dependents' and calculate the total exemption based on the number of dependents.
8. For individuals aged 65 or older or blind, indicate in 'Age and Blindness' section and calculate the additional exemption claims.
9. Add the total exemptions from each line and enter the total on Line 6, as this will be crucial for calculating your withholding tax.
10. If you are eligible for additional withholding exemptions under the Military Spouses Residency Relief Act, enter 'Exempt' on Line 8 and attach the required documents.
11. Finally, sign and date the form in the designated sections to verify the accuracy of the information provided.

Start filling out your MS DoR 89-350 form online today to ensure proper withholding of Mississippi income tax.