Table of Contents

1099 E-Filing: Missouri

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

February 29

The filing deadline for 1099 tax statements is the last day of February. If any due date falls on a Saturday, Sunday or legal holiday, the statements must be filed by the next business day.

E-filing threshold

No Requirement

Filing options

CD, Electronic Filing

Forms to file

All 1099's

Transmittal form

Form MO-W3 Located in CFS Payroll System under “W-2/1099 Information Returns”

Required file name


E-filing website


Subject: Compact Disc/Flash Drive Password



Submitting files

If you do not know your Missouri Identification or PIN number, please contact the Department at 573-751-7200or email

Uploading a File How to:

1. Click the File and Electronic W-2 or 1099 hyperlink under the Electronic Filing Options on the Department’s website:

2. Enter the Missouri Identification Number and PIN

3. Click the Select File Type W-2 or 1099

4. Click the Choose File Button

5. Enter the Business Name

6. Enter the Contact Name

7. Enter the Email Address

8. Click the Submit W-2 or 1099 file button

9. Print and/or Save Confirmation Number for your records

The Department accepts Compact Disc (CDs) and Flash Drives. To ensure a smooth process, please follow the below guidelines:

Each of your compact discs or flash drives should have an external label that includes the following details:

  • Missouri Tax Identification Number
  • Business Name
  • Return Mailing Address
  • Tax Year

Password protected CDs and Flash Drives


Subject: Compact Disc/Flash Drive Password

Ensure the label contains “Password Protected” and the date the password was emailed.

Mail To:

Missouri Department of Revenue Taxation Division

P.O. Box 3330

Jefferson City, MO 651055-3375

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