Follow the steps to complete the form successfully.

1. Click 'Get Form' button to obtain the form and open it in the editor.
2. Enter the taxable year, specifying the beginning and ending dates in the designated fields. This is crucial for accurate processing.
3. Provide your Missouri Tax I.D. and Federal Employer I.D. Number in the appropriate fields for identification.
4. Indicate the corporation name, the year of loss, and the year of modification in their respective sections to ensure clarity.
5. For Columns 1 and 4, enter the amount of the net operating loss deduction attributable to the loss year, utilizing the figures from Federal Form 1120.
6. Complete Lines 2a through 2f by inputting all required additions to federal taxable income, such as state tax addbacks and any other applicable amounts.
7. Add lines 2a through 2f and enter the total on Line 3 to compute all required additions. This total informs subsequent calculations.
8. In Columns 4 and 5, enter all necessary subtractions from federal taxable income by providing details for Lines 4a through 4m.
9. Add lines 4a through 4m and enter the total on Line 5 to compute all subtractions from the federal taxable income.
10. Subtract Line 5 from Line 3 and enter this amount on Line 6 (ensuring it is not less than zero) to find the net addition modification.
11. Input the total amount of the net operating loss for the loss year on Line 7 and include any deductions utilized in prior years on Line 8.
12. Finalize the calculations by following the provided instructions for Lines 9 through 12 to determine the net operating loss modification amount.
13. Once all fields are populated and verified, users can save changes, download, print, or share the form as needed.

Complete your MO MO-5090 online to ensure your corporation's tax obligations are met accurately.