INSTRUCTIONS: MISSOURI S CORPORATION INCOME TAX RETURN (Form MO-1120S)

S corporations doing business in Missouri should file a form MO-1120S to pay their income and/or franchise tax. This document can be obtained on the website of the Missouri Department of Revenue.

Missouri S Corporation Income Tax Return MO-1120S Step 1: At the top left-hand corner, enter your corporation's name, address, state and federal identification numbers, and its charter number.

Missouri S Corporation Income Tax Return MO-1120S Step 2: If filing a return to document bankruptcy or a name or address change, or if you are filing an amended or final return, indicate this with a check mark.

Missouri S Corporation Income Tax Return MO-1120S Step 3: Follow the instructions to calculate your total additions on lines 1a through 5. You must attach a detailed explanation of every item.

Missouri S Corporation Income Tax Return MO-1120S Step 4: Follow the instructions to calculate your total subtractions on lines 6a through 14. You must attach a detailed explanation of every item.

Missouri S Corporation Income Tax Return MO-1120S Step 5: Skip to Schedule MO-FT on the third page. Follow the instructions to calculate your corporation franchise tax due, and enter this on line 15 on the first page.

Missouri S Corporation Income Tax Return MO-1120S Step 6: Enter your tax credits claimed on line 16. You must document these on a Schedule MO-TC form, which should be submitted with your return.

Missouri S Corporation Income Tax Return MO-1120S Step 7: Follow the instructions on line 17 through 22 to determine your adjusted franchise tax due.

Missouri S Corporation Income Tax Return MO-1120S Step 8: Complete lines 23 through 28 as instructed to determine your final total due.

Missouri S Corporation Income Tax Return MO-1120S Step 9: The second page requires you to document your shareholder adjustments. Give each shareholder's name, Social Security number, the percentage of their share in the S corporation and the size of their adjustment. Indicate with a check mark in the second column if any of these shareholders is not a Missouri resident.

Missouri S Corporation Income Tax Return MO-1120S Step 10: An officer of the S corporation should sign the form, give their title, give the date of signing and provide a telephone number. Any paid preparer should sign the form, provide their identification number, and give the date and their telephone number.