INSTRUCTIONS: MISSOURI INDIVIDUAL INCOME TAX RETURN — LONG FORM (Form MO-1040)
Individuals who owe income tax to the state of Missouri can file a long-form MO-1040 return. This document can be found on the website of the Missouri Department of Revenue.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 1: At the top of the first page, enter your Social Security number, as well as that of your spouse if filing jointly. Provide your full name, and that of your spouse if applicable. If the form is being filed on behalf of a taxpayer by an attorney, accountant or another representative, they should enter their name where indicated.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 2: Enter your address and county.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 3: Indicate with check marks whether you and your spouse are 62 or older, 65 or older, blind, 100% disabled or are a non-obligated spouse.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 4: Detail you and your spouse's income separately on lines 1 through 5. Combine the values on line 5 and enter the sum on line 6. Divide the individual numbers on line 5 by the total on line 6 to determine the separate income percentages for both spouses if applicable. Enter these on line 7.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 5: Follow the instructions on lines 8 through 23 to determine your total deductions.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 6: Follow the instructions on lines 24 through 31 to determine your total tax owed.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 7: Follow the instructions on lines 32 through 39 to calculate the total of all payments already made and all applicable credits.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 8: Lines 40 through 42 should only be completed by those filing an amended return.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 9: Lines 43 through 46 are only for those who have determined they have overpaid and are owed a refund.
Missouri Individual Income Tax Return — Long Form MO-1040 Step 10: Lines 47 through through 49 provide instructions for the final calculations to determine the amount owed.
