Missouri Releases 2021 Employer’s Tax Guide

Robert Beck
December 23, 2020

Missouri recently released it’s Employer’s Tax Guide for Tax Year 2021. This guide contains general information regarding filing and payment of withholding taxes for Missouri employers. Additionally, the publication contains the updated tax withholding tables. The most notable change was a revision of the withholding tables to include increased standard deductions. Several other minor changes were made throughout the document, the most notable of which are detailed below.

Employer’s Tax Guide

  • Revision date is December 2020

  • Date for the publication has been updated to the 2021 Tax Guide and Formula and the current tax year throughout is referred to as 2021.

  • The last date for late submission of W-2 files electronically has been changed from January 31, 2020 to *November 1, 2021* for tax year 2020 filings.

  • Employer Withholding Tax Due Dates have been updated for 2021 to account for weekends and holidays for the tax year.

2021 Missouri Withholding Tax Formula

  • The Single, Married and Spouse Works, and Married Filing Separate standard deductions have been increased to $12,550 for each status.

  • The Married and Spouse Does Not Work deduction has been increased to $25,100, and the Head of Household deduction has been increased to $18,800

  • The daily withholding divisor has been reduced from 262 to 260

  • The Tax tables have been updated to reflect the amounts calculated using the new standard deductions

  • The number provided for the Tax Division has been changed to (573) 522-0967 for the Jefferson City, MO

  • Update dates have been updated to October 30,2020

To review the entire employer’s guide, click here.

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Robert Beck

Robert Beck is a Junior Regulatory Counsel at Sovos Compliance. As part of the Regulatory Analysis team, his main areas of focus are state and federal tax withholding, and the Affordable Care Act (ACA). Robert is a member of the Massachusetts Bar and received his J.D. from New England Law | Boston and his B.A. in Justice from University of Alaska Fairbanks.
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