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2024 Form C Instructions
Part II: Reconciliation of Book Income or Net Income per Income Statement with Net Income
NOTE: Complete this part after you have completed Schedules 4V and 4W for non-combined members; Form 6,
Part II lines 2 and 4 for combined members, Schedule 5K Additions and Subtractions for Tax Option (S) Corporation
shareholders, Schedule 3K Additions and Subtractions for partners, and Form 4T, Parts 1 and 2 Additions and
Subtractions for exempt organizations.
■ Lines 6 through 10. Federal Taxable Income –Allocate the federal Schedule M-1 adjustments to Wisconsin and
outside Wisconsin. For federal Schedule M-3 filers, allocate the sum of the addition adjustments from Parts II and
III on line 7 and the sum of the subtraction adjustments from Parts II and III on line 9.
■ Line 11. Additions to Federal Income – Allocate your additions to federal income to Wisconsin and outside
Wisconsin. Use the amounts you reported on Schedule 4V for non-combined filers; Form 6, Part II, line 2 for com-
bined filers, Schedule 5K, Additions for shareholders, Schedule 3K, Additions for partners, and Form 4T, Part 1,
Additions for exempt organizations.
■ Line 13. Subtractions from Federal Income – Allocate the subtractions from federal income to Wisconsin and
outside Wisconsin. Use the amounts you reported on Schedule 4W for non-combined filers; Form 6, Part II, line 4
for combined filers, Schedule 5K, Subtractions for shareholders, Schedule 3k, Subtractions for partners, and Form
4T, Part 2, Subtractions for exempt organizations.
■ Line 15. Amount Subject to Apportionment – If the taxpayer completing this form has both income or loss it is
apportioning and income or loss it is allocating under separate accounting, enter the amount in each column that will
be apportioned instead of allocated.
For non-combined filers: If you had any adjustments on Schedules 4V or 4W attributable to income you will be ap-
portioning, be sure the amounts you report on line 15 include those Schedule 4V and 4W adjustments.
For combined filers: If you had any adjustments on Form 6, Part II, lines 2 and 4 attributable to income you will be
apportioning, be sure the amounts you report on line 15 include those adjustments.
For tax option (S) Corporation filers: If you had any adjustments on Schedule 5K, Additions and Subtractions attribut-
able to income you will be apportioning be sure the amounts you report on line 15 include those adjustments.
For partnership filers: If you had any adjustments on Schedule 3K, Additions and Subtractions attributable to income
you will be apportioning be sure the amounts you report on line 15 include those adjustments.
For exempt organizations: If you have any adjustments on Form 4T, Parts 1 or 2, Additions and Subtractions attribut-
able to income you will be apportioning be sure the amounts you report on line 15 include those adjustments.
■ Line 16. Total Allocable Net Income – Subtract the amount on line 15 from the amount on line 14. This is the
taxpayer's allocable net income. Enter the amount from column 1 on Form N, line 6, column a. Enter the amount from
column 3 on Form N, line 6, column b.
■ Lines 17 through 19. Additional Information – Enter the information requested. Include a detailed explanation
of how transfer prices were determined for transactions between Wisconsin branches and branches located outside
Wisconsin.
Additional Information and Assistance
Web Resources
The Department of Revenue’s web page, available at revenue.wi.gov, has a number of resources to provide addi-
tional information and assistance, including:
• Related forms and their instructions
IC-144 (R. 10-24) 2
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