hard to know for sure...the Actual MO 2020 instructions say on page 2:
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If your form has a 2-D barcode, mail your return to the Department of Revenue address as indicated below:
Refund returns: P.O. Box 3222, Jefferson City, MO 65105-3222
Balance due returns: P.O. Box 3370, Jefferson City, MO 65105-3370
Refund returns claiming a property tax credit: P.O. Box 3385, Jefferson City, MO 65105-3385
Balance due returns claiming a property tax credit: P.O. Box 3395, Jefferson City, MO 65105-3395
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( https://dor.mo.gov/forms/MO-1040%20Instructions_2020.pdf )
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For the manually-entered paper forms...without a 2D bar code, it is:
Refund or no balance due: Missouri DOR, PO box 500, Jefferson City, MO 65105-0500
Balance Due: Missouri DOR, PO box 329, Jefferson City, MO 65105-0329
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
