No. 1: you don’t mail in the mock Federal return. You would attach your joint Federal return with your MO return.
No. 2: Attach a copy of your federal return (pages 1 and 2) and Federal Form 8611. Include forms that only include Missouri withholding as shown on your Forms W-2, 1099, or 1099-R. Do not include withholding for federal taxes, local taxes, city earnings taxes, other state's withholding, or payments submitted with Form MO-2NR or Form MO-2ENT.
