Pass-Through Entity-Level Tax: Tax-Option (S) Corporation Shareholder Reporting Questions

Effective for taxable years beginning on or after January 1, 2018

  1. How will making the election impact a shareholder's adjusted basis in their stock and indebtedness of the tax-option (S) corporation?

  2. Can shareholders use the Wisconsin manufacturing and agriculture credit from an electing tax-option (S) corporation to offset their Wisconsin individual income tax liability for the same taxable year?

  3. If a tax-option (S) corporation elects to pay tax at the entity level, can an individual Wisconsin resident shareholder claim a credit for taxes paid to another state on the income from the electing tax-option (S) corporation?

  4. How is the Wisconsin credit for taxes paid to other states (TPOS) calculated if a lower-tier entity made the entity-level tax election but the upper-tier entity did not make the entity-level tax election?

  5. How is the Wisconsin credit for taxes paid to other states (TPOS) calculated if the tax-option (S) corporation does not have nexus in Wisconsin, does not file a Wisconsin income/franchise tax return, and makes an election to pay tax at the entity-level in another state?

  6. If a tax-option (S) corporation elects to pay tax at the entity level, are individual shareholders required to file a Wisconsin individual income tax return if they have no income reportable to Wisconsin?

  7. If a tax-option (S) corporation elects to pay tax at the entity level, are estate or trust shareholders required to file a Wisconsin Form 2, Wisconsin Fiduciary Income Tax for Estates or Trusts, if they have no income reportable to Wisconsin?

  8. Are shareholders of an electing tax-option (S) corporation required to include their Schedule 5K-1 with their Wisconsin individual income tax returns?

  9. If a nonresident of Wisconsin is a shareholder of two tax-option (S) corporations and only one makes the election to pay tax at the entity level, can the nonresident shareholder participate in the Wisconsin composite return, Form 1CNS, of the non-electing tax-option (S) corporation?

  10. What items reported on a Schedule 5K-1 from an electing tax-option (S) corporation can a shareholder claim on their income tax return?

  11. What items reported on a Schedule 5K-1 from an electing tax-option (S) corporation are not allowed to be claimed by a shareholder on their income tax return?

  12. Can a greater than 2-percent shareholder claim the self-employed health insurance deduction for health insurance premiums paid by an electing tax-option (S) corporation on behalf of the shareholder?

  13. If the election is made, how should a shareholder filing a Wisconsin tax return remove their proportionate share of the electing tax-option (S) corporation's income that is taxed at the entity level?

  14. Can the removal of an electing tax-option (S) corporation's income from the shareholder's individual income tax return create a Wisconsin net operating loss (NOL) if the shareholder does not have a federal NOL?

  15. When an individual shareholder is determining household income for purposes of claiming the homestead credit, must the individual shareholder include income from a tax-option (S) corporation making the entity-level election?

  16. Can the department provide an example of an individual shareholder with passive loss limitations when the entity-level tax election is made under sec. 71.365(4m)(a), Wis. Stats.?


Applicable Laws and Rules

This document provides statements or interpretations of the following laws and regulations enacted as of January 16, 2024: secs. 71.01, 71.03, 71.07, 71.21, 71.28, 71.36, 71.365, 71.52 and 71.775, Wis. Stats., sec. Tax 2.08, Wis. Adm. Code, and sec. 162, IRC.

Laws enacted and in effect after this date, new administrative rules, and court decisions may change the interpretations in this document. Guidance issued prior to this date, that is contrary to the information in this document is superseded by this document, according to sec. 73.16(2)(a), Wis. Stats.

​​​​Contact Us

MS 5-77
Wisconsin Department of Revenue
Customer Service Bureau
PO Box 8949
Madison, WI 53708-8949​
Phone: (608) 266-2772
Fax: (608) 267-1030
Email: ​​DORAuditPassThrough@wisconsin.gov

The department welcomes your input on our guidance. Submit comments on this guidance document.

Guidance Document Number: 100187

January 16, 2024