The Missouri Department of Revenue will begin accepting electronically filed state tax returns for the 2023 tax year on Monday January 29th. That same day the IRS will begin accepting federal tax returns for individual filers. To ensure a smooth tax season its important to always file electronically and use direct deposit. Electronic filing is a great secure way to file your state tax returns. Its also important to double check your paper return before submitting it, and you can make sure you are submitting it to the right place by going to DOR.MO.GOV. The due date for 2023 tax returns is April 15th, 2024.