Follow the steps to complete the form accurately.

1. Click ‘Get Form’ button to obtain the form and open it in the editor.
2. Begin by entering your initial last name and first name in the designated fields for the taxpayer. Ensure that you enter your social security number (SSN) accurately, as it is required.
3. If applicable, fill in your spouse's first name and SSN in the corresponding fields.
4. Provide your mailing address, including the street number, city, state, county code, and ZIP code.
5. Move to Part I, where you will input your Mississippi taxable income, total Mississippi tax, Mississippi tax payments, refund amount, and any amount owed. Ensure each value is rounded to the nearest dollar.
6. In Part II, input your routing number and account number for direct deposit or direct debit. Select the type of account from the options provided: checking or savings.
7. Complete the authorization statement by confirming that you authorize the Mississippi Department of Revenue to access your financial information to process your refund or payment.
8. Sign and date the declaration of taxpayer section, ensuring that the information aligns with the corresponding lines of your Mississippi income tax return.
9. If you are using an electronic return originator (ERO) or a paid preparer, ensure that they fill out their section, signing as required and including their information.
10. After completing all sections and ensuring accuracy, you can save changes, download, print, or share the form as needed.

Complete your MS MS8453 online today to ensure timely and accurate tax filing.