topic Re: e-file amendment for Missouri state in After you file

e-file amendment for Missouri state

AMARMANO — Mon, 09 Mar 2026 08:54:09 GMT

After I filled in my amendment, Turbotax desktop version on Mac allowed me to e-file amendment to Federal, I see $24 taxes I owe for state (Missouri) but I don't any options in TurboTax to e-file amendment for state (I did e-filing for state when I did my original tax filing). Please help with the instructions to e-file amendment for Missouri state, i see MO allows e-files for amendments from 2020 onwards, I am filing for 2021.

Re: e-file amendment for Missouri state

JohnW152 — Mon, 07 Mar 2022 16:51:14 GMT

You’ll need to send in your amended Missouri tax return.

While Missouri will accept e-filed amended returns, you’ll need to mail the paper amended return that you prepare with TurboTax. See the TurboTax Help article Can I e-file my amended state return? for details.

Missouri does not have a dedicated amended return form. You’ll need to use Form MO-1040 for the amended return. Make sure that the Amended Return box is checked on your 2021 Individual Income Tax Return when you send it in.

See the Amended Return instructions in the Form MO-1040 Instructions for more information.

Re: e-file amendment for Missouri state

AMARMANO — Tue, 08 Mar 2022 02:46:05 GMT

Thanks for the response. For filing amendment to Missouri, please advise what pages should I submit to the state from the Tax Return document. When I search on internet, I says we need to submit Form MO-1040 and Form MO-A along with Fed return & schedules, but the amendment tax return document generated by TurboTax has got only MO-1040 Amended form but it does not have Form MO-A, please help with instructions to generate Form MO-A from TurboTax.

Re: e-file amendment for Missouri state

AmyC — Thu, 10 Mar 2022 03:40:06 GMT

Let's go through what you actually have and need. Let's follow the Form MO-1040 Instructions which say To file an amended individual income tax return, use Form MO-1040. Select the box at the top of the form. Complete Forms MO-1040 and the Individual Income Tax Adjustments (Form MO-A), pages 1-4 (pages 27-30 in the instructions), using corrected figures. Attach all schedules along with a copy of your federal changes and your Federal Form 1040X. If you are due a refund, mail to: Department of Revenue, P.O. Box 500, Jefferson City, MO 65105-0500. If you have an amount due, mail to Department of Revenue, P.O. Box 329, Jefferson City, MO 65105-0329.

What to actually mail:

Look at the Form MO-A- itemized deductions, Social Security, etc. If you do not have any of those adjustments on the form, the form is not generated and you do NOT have to mail it.
Do you have any other forms for MO that have changed? If so, include them. If not, just the 1040 it is.
On to the federal, include your 1040x and any schedules that changed.

I recommend you mail with tracking to ensure your information arrives safe and secure.