In March 2018, the Missouri Department of Revenue made adjustments to the employer withholding tables following changes made to the federal tables.
The Department has continued to monitor the changes and has identified the need to make a subsequent adjustment to the withholding tables and calculations.
The Department has adjusted the withholding tables, the Missouri Employer's Tax Guide, Form 4282 and the withholding calculator instructions, which are all located on our website at: dor.mo.gov/business/withhold/.
Employees should be encouraged to review their federal and state withholdings to ensure the appropriate amount is withheld and complete a new MO-W4 if changes are needed. They may also submit estimated tax payments with the 2018 Declaration of Estimated Tax for Individuals, Form MO-1040ES.
The Director of Revenue's press release on this matter may be found at: dor.mo.gov/news/archive/year/2018/.